US20220144459A1 - Space Vehicle System - Google Patents
Space Vehicle System Download PDFInfo
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- US20220144459A1 US20220144459A1 US17/021,046 US202017021046A US2022144459A1 US 20220144459 A1 US20220144459 A1 US 20220144459A1 US 202017021046 A US202017021046 A US 202017021046A US 2022144459 A1 US2022144459 A1 US 2022144459A1
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- 239000000446 fuel Substances 0.000 description 5
- 239000002360 explosive Substances 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
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- 238000002955 isolation Methods 0.000 description 2
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/62—Systems for re-entry into the earth's atmosphere; Retarding or landing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/002—Launch systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/002—Launch systems
- B64G1/006—Reusable launch rockets or boosters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/52—Protection, safety or emergency devices; Survival aids
- B64G1/58—Thermal protection, e.g. heat shields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/62—Systems for re-entry into the earth's atmosphere; Retarding or landing devices
- B64G1/625—Landing devices; Undercarriages
Definitions
- This disclosure relates to the field of space vehicle systems. More particularly, this disclosure relates to a space vehicle system having enhanced characteristics for efficient launch and reentry of the space vehicle system.
- Space flight launch vehicles may be either expendable wherein all or some components of the vehicle are expended after launch of the system or reusable wherein all or some of the components of the vehicle return to earth after launch for reuse in later launches.
- costs of additional launches may be substantially reduced by reusing components of the initial system.
- a system may be subject to additional stresses during reentry of the reusable components and those components must be protected to remain viable for reuse during a later launch.
- Typical space flight launch vehicles are shaped for maximum efficiency during forward flight of the system, such as during launch.
- Conventional launch vehicles are characterized by elongate cylindrical bodies having a relatively constant cross-sectional shape from a nose of the vehicle to a tail of the vehicle. This conventional shape induces various aerodynamic and thermal stresses on the vehicle during launch and flight. Increased stresses on the vehicle may require additional supporting structure or thermal resistant materials, thereby increasing a weight of the vehicle.
- Conventional launch vehicles are further not typically effective in withstanding forces on the vehicle during reentry and descent of the system. For example, when the launch vehicle descends, various aerodynamic and thermal loads are placed on a fuselage of the system that differ from loads placed on the vehicle during launch and ascent of the vehicle. Reinforcing the launch vehicle to withstand loads placed on the vehicle during reentry and descent may further increase a weight of the vehicle, thereby increasing a required fuel load for launch of the vehicle.
- a space launch vehicle including: a first section having a surface and expanding in width from a nose end of a space vehicle to a trailing edge of the first section, wherein the first section shields a forward portion of the spacecraft during launch, ascent and forward flight; a second section having a surface and narrowing in width from a first end adjacent the trailing edge of the first section to a second end distal from the first end, wherein the second section shields the forward portion of the spacecraft during reentry and descent of the vehicle; a third section having a surface and a first end adjacent to the second end of the second section and a second end that is distal from the first end, the third section having a substantially continuous width along a length of the third section; a fourth section having a surface and expanding in width
- the space launch vehicle further includes a shock cone and spike formed on the nose end of the space vehicle.
- the multi-planar space vehicle fuselage further includes a cargo bay located within the third section.
- the multi-planar space vehicle fuselage further includes one or more air intakes formed in the third surface of the third section.
- a maximum width of the fourth section at the tail end of the space vehicle is wider than a maximum width of the first section.
- the multi-planar space vehicle fuselage further includes cascading isolator plates formed on the surface of the first section, the surface of the second section, and the surface of the fourth section.
- each of the isolator plates includes a leading surface and a trailing surface, and wherein the leading surface has a slope that is shallower than a slope of the trailing surface.
- the multi-planar space vehicle fuselage further includes a plurality of landing legs attached to the fuselage.
- the multi-planar space vehicle fuselage further includes a skirt formed around the fuselage adjacent the second end of the second section.
- the multi-planar space vehicle further includes an aerospike nozzle formed on an aft end of the vehicle at the fifth section.
- the aerospike nozzle includes: a truncated spike including an outer edge and a surface formed on a rear portion of the truncated spike; a plurality of injectors on the surface of the truncated spike for emitting a gas from the surface of the truncated spike into a recirculation region behind the space vehicle; and an annular ring outlet formed on the fifth section between the outer edge of the truncated spike and an inner edge of the fifth section.
- the truncated spike further includes a plurality of heat resistant tiles located on the surface of the truncated spike.
- a space launch vehicle including: a shock cone and spike formed on the nose end of the space vehicle; a first section adjacent to the shock cone and spike and having a surface and expanding in width from a nose end of a space vehicle to a trailing edge of the first section, the first section including a plurality of first cascade plates formed on the surface at least partially along a length of the first section, wherein the first section shields a forward portion of the spacecraft during launch, ascent and forward flight; a second section having a surface and narrowing in width from a first end adjacent the trailing edge of the first section to a second end distal from the first end, the second section including a plurality of second cascade plates formed on the surface at least partially along a length of the second section, wherein the second section shields the forward portion of the spacecraft during reentry and descent of the vehicle; a third section having a surface and a first end adjacent to the second end of the second section and a second end that is distal from the first end, the
- a space launch vehicle including: a shock cone and spike formed on the nose end of the space vehicle; a first section adjacent to the shock cone and spike and having a surface and expanding in width from a nose end of a space vehicle to a trailing edge of the first section, the first section including a plurality of first cascade plates formed on the surface at least partially along a length of the first section, wherein the first section shields a forward portion of the spacecraft during launch, ascent and forward flight; a second section having a surface and narrowing in width from a first end adjacent the trailing edge of the first section to a second end distal from the first end, the second section including a plurality of second cascade plates formed on the surface at least partially along a length of the second section, wherein the second section shields the forward portion of the spacecraft during reentry and descent of the vehicle; a third section having a surface and a first end adjacent to the second end of the second section and a second end that is distal from the first end, the
- FIG. 1 shows a schematic side view of a space vehicle according to one embodiment of the present disclosure
- FIGS. 2 and 3 show side views of a space vehicle including cascading plates according to embodiments of the present disclosure
- FIG. 4 shows a bottom view of an aerospike nozzle of a space vehicle according to one embodiment of the present disclosure
- FIG. 5 shows a cross-sectional side view of an aerospike nozzle of a space vehicle according to one embodiment of the present disclosure
- FIG. 6 shows a cross-sectional view of a capsule bay according to one embodiment of the present disclosure
- FIG. 7 shows a top view of a space launch vehicle according to one embodiment of the present disclosure.
- FIG. 8 shows a side view of a space launch vehicle according to one embodiment of the present disclosure.
- FIG. 1 shows a basic embodiment of a space launch vehicle 10 that includes enhanced characteristics for improved efficiency during launch and reentry of the space launch vehicle 10 .
- the space launch vehicle 10 is shaped to withstand aerodynamic and thermal stress encountered during various stages of launch and reentry. Aerodynamic characteristics of the space launch vehicle 10 reduce stresses on at least portions of the space launch vehicle 10 and allow the space launch vehicle 10 to function as a vertical takeoff vertical landing (“VTVL”) reusable single-stage-to-orbit (“SSTO”) vehicle.
- VTVL vertical takeoff vertical landing
- SSTO single-stage-to-orbit
- the space launch vehicle 10 includes a multi-planar fixed geometry planned fuselage 12 (“MPFGPF”) that defines a shape of the space launch vehicle 10 .
- MPFGPF multi-planar fixed geometry planned fuselage 12
- Surfaces of the fuselage 12 may include a plurality of isolators to protect the space launch vehicle 10 from stresses during launch and reentry.
- additional systems manage a balance of weight onboard the vehicle and otherwise adjust characteristics of the vehicle to optimize the vehicle for both launch and reentry flight conditions.
- the fuselage 12 of the space launch vehicle 10 includes planar surfaces formed on the fuselage that are shaped to resist thermal and aerodynamic stresses on the vehicle 10 during both launch and reentry conditions.
- the vehicle 10 is formed into sections of surfaces on the fuselage 12 that are each shaped withstand aerodynamic and thermal stresses on the vehicle during various stages of launch and reentry.
- the fuselage 12 preferably includes a shock cone 14 , a first section 16 , a second section 18 , a third section 20 , a fourth section 22 , and a fifth section 23 formed along a length of the space launch vehicle 10 .
- the sections of the fuselage 12 include surfaces that may be located on a windward side of the vehicle 10 wherein the surfaces are facing a free stream or a leeward side of the vehicle 10 wherein the surfaces are isolated from the free stream. Surfaces of the vehicle 10 may be located on a windward side when the vehicle travels in a forward direction, such as during launch, and may also be located on a leeward side when the vehicle travels in a reverse direction, such as during reentry of the space launch vehicle 10 .
- the shock cone 14 is formed on a nose end 24 of the space launch vehicle 10 .
- a tip of the shock cone 14 is formed as a tapered and blunt spike 26 that initially contacts air as the space launch vehicle 10 is moving in a forward direction, such as during launch of the vehicle 10 .
- the shock cone 14 is tapered and expands in width from the front end 30 to a middle portion 32 of the shock cone 14 .
- the shock cone 14 is then formed into a reverse taper wherein the shock cone 14 narrows in width from the middle portion 32 to an end of the shock cone 14 that is adjacent to first section 16 of the fuselage 12 .
- the first section 16 of the fuselage 12 abuts the shock cone 14 .
- the first section 16 is formed into a tapered cone and includes an outer surface 34 that expands in width from the nose end 24 to a trailing edge 36 of the first section 16 .
- the outer surface 34 is oriented as a windward-facing surface when the space launch vehicle 10 is moving in a forward direction such that the leading end 28 of the vehicle 10 first encounters air during launch, ascent, and flight of the vehicle 10 .
- the second section 18 of the fuselage 12 abuts the trailing edge 36 of the first section 16 and is formed into a reverse-tapered cone such that an outer surface 38 of the second section 18 narrows in width from a first end 40 adjacent to the trailing edge 36 towards a second end 42 near a midpoint of a length of the fuselage 12 .
- a width of the first end 40 of second section 18 at the trailing edge 36 is preferably less than a width of first section 16 at the trailing edge 36 such that a leeward-facing lip 44 is created between the first section 16 and the second section 18 .
- the second section 18 tapers in width from the first end 40 to the second end 42 .
- the second section 18 is preferably sloped at an angle that is shallower than an angle of the slope of the first section 16 and preferably has a length that is longer than a length of the first section 16 , as shown in FIG. 1 .
- the second section 18 tapers to a width that is preferably equal to a width of the third section 20 , as discussed in greater detail below.
- a skirt 45 may be formed around the fuselage 12 of the space launch vehicle 10 adjacent the second end 42 of the second section 18 .
- the skirt 45 includes a sloped leading edge and a substantially flat trailing edge.
- the skirt 45 protects the third section 20 of the fuselage 10 while during descent and landing the flat trailing edge of the skirt 45 may slow a flow of air around the fuselage to aid in braking of the vehicle 10 .
- the third section 20 preferably includes a substantially flat surface along a length of the third section.
- a first end 46 of the third section 20 is located adjacent to the second end 42 of the second section 18 .
- the third section 20 preferably has a diameter that is approximate or equal to a diameter of the second end 42 of the second section 18 such that a smooth surface is formed along a transition from the second section 18 to the third section 20 .
- the third section 20 is formed into a substantially continuous cross-sectional width along a length of the third section 20 to a second end 48 of the third section 20 .
- the fourth section 22 is formed adjacent to the second end 48 of the third section 20 and forms a tail section of the fuselage 12 .
- the fourth section 22 is formed into a tapered cone expanding in diameter from a first end 50 adjacent to the second end 48 of the third section 20 to a second end 52 of the fourth section.
- the fifth section 23 includes a heat shield 54 is formed on a tail surface of the fuselage 12 for shielding the vehicle 10 during reentry and descent.
- the heat shield 54 is located on the tail surface of the vehicle 10 such that during reentry and descent wherein the vehicle 10 is travelling in a direction that is reverse from a direction of flight during launch and ascent, the heat shield 54 is on a windward surface of the vehicle 10 and shields the vehicle 10 from thermal loads during reentry.
- the heat shield 54 is preferably formed of a plurality of heat resistant tiles, such as reinforced carbon or ceramic tiles placed on the tail surface of the fuselage 12 .
- the fourth section 22 preferably includes one or more landing legs formed along the fourth section 22 for supporting the vehicle 10 during landing.
- the landing legs may be formed similar to known existing legs utilized on VTVL vehicles.
- the landing legs may be folding landing legs that are retracted during launch and flight and that are extended during landing of the vehicle 10 . While the above description contemplates the landing legs being located on the fourth section 22 of the vehicle 10 , it is also understood that the landing legs may be mounted along other sections of the vehicle 10 .
- the first section 16 , second section 18 , third section 20 , fourth section 22 , and fifth section 23 provide a shape of the vehicle 10 that reduce drag and increase lift and stability of the vehicle 10 during both launch and reentry.
- the first section 16 faces the flow of air and shields the second section 18 and third section 20 from thermal and mechanical stresses.
- Drag is induced on the vehicle 10 by the first section 16
- the second section 18 creates a region of recirculation such that air along the second section 18 moves slower than air along the first section 16 .
- the region of recirculation at the second section 18 counteracts drag induced on the first section 16 by pushing against the second section 18 and creating lift on the vehicle 10 .
- At least part of the fourth section 22 also faces the stream during launch and ascent of the vehicle 10 .
- a flow of air along the third section 20 is laminar and higher velocity than a flow along the second section 18 , making the third section 20 a preferable location for an air intake 21 for a propulsion system of the vehicle 10 .
- the second section 18 is a leeward surface and an area of recirculation and turbulent air flow. Air flowing along the second section 18 is of lower speed and higher pressure, causing lift on the second section 18 of the vehicle 10 and stabilizing the vehicle 10 during flight.
- the shape of the vehicle 10 including the various sections described herein further induces positive static stability of the vehicle 10 . Regions of pressure and recirculation along the fuselage 12 of the vehicle 10 encourage the vehicle 10 to maintain a direction of flight when the vehicle 10 is moving in a forward direction.
- the vehicle 10 is travelling in a substantially reverse direction such that the heat shield 54 is facing the flow of air, the fourth section 22 and first section 16 are on leeward facing sides of the vehicle 10 .
- the second section 18 is on a windward side of the vehicle 10 and faces the flow of air. Compression, a consequence of the flow of air on the windward-facing second section 18 act to slow a descent of the vehicle 10 during descent.
- a plurality of cascading plates 53 are formed on surfaces of the fuselage 12 to isolate portions of the fuselage 12 from friction and thermal and mechanical loads.
- the cascading plates 53 are preferably formed on the outer surface 34 of the first section 16 and the outer surface 38 of the second section 18 , as shown in FIG. 1 .
- the cascading plates 53 are also preferably formed on the outer surface 34 of the fourth section 22 .
- the cascading plates 53 may also be formed on any outer surfaces of any landing legs or other structures of the fourth section 22 to shield those components during launch and reentry.
- the cascading plates 53 are preferably formed of a high temperature material for protecting the fuselage 12 from thermal stress on the vehicle 10 during launch and reentry.
- the cascading plates 53 include a sloped leading surface 55 and a sloped trailing surface 58 .
- the sloped leading surface 55 is preferably sloped at an angle that is shallower than the sloped trailing surface 58 of the cascading plates 53 .
- the cascading plates 53 formed on the vehicle 10 isolate portions of the fuselage 12 from thermal and mechanical loads during ascent and descent and further dissipate heat generated during flight.
- the cascading plates 53 located on surfaces of the vehicle 10 create multiple shock waves along portions of the fuselage 12 that isolate portions of succeeding shock cones from oncoming air flow, thereby reducing the total drag and friction of the isolated portions and collectively to the vehicle 10 .
- the shock cone 14 creates an initial isolation effect prior to air contacting the first section 16 of the fuselage 12 to create an initial isolation effect before air reaches the cascading plates 53 formed on the fuselage 12 .
- the vehicle 10 preferably includes an aerospike nozzle 56 formed on an aft end of the vehicle 10 at the tail surface of the fuselage 12 .
- the aerospike nozzle 56 preferably includes a truncated spike 57 extending from the aft end of the vehicle 10 .
- An annular ring outlet 58 is formed between an outer edge 59 of the truncated spike 57 and an inner edge 60 of the fifth section 23 ( FIG. 1 ).
- one or more mechanical doors or actuating petals are located around the annular ring outlet 58 to cover and protect the annular ring outlet 58 during reentry of the vehicle 10 .
- a sloped trailing edge 65 is formed between an outer surface of the fourth section 22 and the inner edge 60 of the fifth section 23 to aid in re-attaching a flow of air from the outer surface of the fourth section 22 to the truncated spike 57 .
- a plurality of nozzles 61 are annularly located around the truncated spike 57 and direct exhaust gases towards the truncated spike 57 and out of the aft end of the vehicle 10 .
- a plurality of injectors 62 are formed on a surface 63 of the truncated spike 57 and are preferably in communication with a combustion system of the vehicle 10 or other source of gas such that fuel, oxidizer, or other gases are emitted from the injectors 62 into a recirculation region 64 formed behind the truncated spike 57 during launch and forward flight of the vehicle 10 .
- the surface 63 of the truncated spike 57 preferably includes a plurality of heat resistant tiles forming the heat shield 54 to protect the vehicle 10 during reentry and descent of the vehicle 10 .
- oxidizer and fuel are combusted at the nozzles 61 and the resulting exhaust is directed onto the truncated spike 57 .
- a flow of air from the fourth section 22 of the fuselage 12 recirculates adjacent the fifth section 23 and the recirculating flow pushes the exhaust towards the truncated spike 57 .
- One or more of fuel, oxidizer, and other gases are emitted from the injectors 62 into the recirculation region 64 where they may be ignited by the exhaust gases, thereby generating additional thrust against the surface 63 of the truncated spike 57 .
- fuel or oxidizer are preferably emitted from the injectors 62 into the recirculation region 64 , it is also understood that various other gases may be emitted from the injectors 62 into the recirculation region 64 , thereby increasing pressure in the recirculation region 64 .
- the space launch vehicle 10 further includes a capsule bay 64 located within the fuselage 12 of the space launch vehicle 10 .
- the capsule bay 64 is preferably located along a midpoint of the space launch vehicle 10 and encloses a capsule 62 adjacent to a main cargo bay 66 .
- the main cargo bay 66 includes a cargo bay door 67 that may either be formed as opposing hinging doors or a single piece door mounted on hinges at one side of the door 67 .
- the capsule bay 64 includes a capsule bay door 68 attached to the fuselage with one or more explosive bolts 70 and an explosive hinge 72 .
- the capsule 62 is located within the capsule bay 64 adjacent to a capsule rest 74 for supporting the capsule 62 within the fuselage 12 .
- the capsule bay door 68 is configured to be jettisoned in an emergency such that the capsule 62 may be ejected from the space launch vehicle 10 .
- the explosive bolts 70 and explosive hinge 72 may be activated during an abort sequence. Rockets or other propulsion systems may jettison the capsule bay door 68 from a side of the fuselage 12 .
- the capsule 62 may include one or more rockets that are activated to eject the capsule 62 out of the side of the space launch vehicle 10 and away from the vehicle 10 .
- the capsule bay door 68 is semicircular in shape, thereby only requiring the capsule bay door 68 to be jettisoned during an abort sequence for the capsule to be ejected, thereby reducing a size and number of components to be jettisoned during abort of a launch or flight sequence.
- the space launch vehicle advantageously provides a reusable vehicle configured for VTVL wherein a mechanical load and forces primarily act on a single axis along a length of the vehicle.
- the space launch vehicle includes enhanced aerodynamic characteristics that allow the vehicle to operate in both a forward direction during launch and flight and in a reverse direction during reentry and descent.
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Abstract
A space vehicle includes: an aerospike nozzle formed on an aft end of the vehicle; a truncated spike including an outer edge and a surface formed on a rear portion of the truncated spike; and an annular ring outlet formed at the aft end of the vehicle between the outer edge of the truncated spike and an inner edge of the aft end of the space vehicle.
Description
- This application claims priority to and is a continuation of U.S. Nonprovisional patent application Ser. No. 16/037,486 for a Space Vehicle System filed on Jul. 17, 2018, which claims priority to and is a continuation of U.S. Nonprovisional patent application Ser. No. 15/449,921 for a Space Vehicle System filed on Mar. 4, 2017, the contents of which are incorporated herein by reference in its entirety.
- This disclosure relates to the field of space vehicle systems. More particularly, this disclosure relates to a space vehicle system having enhanced characteristics for efficient launch and reentry of the space vehicle system.
- Space flight launch vehicles may be either expendable wherein all or some components of the vehicle are expended after launch of the system or reusable wherein all or some of the components of the vehicle return to earth after launch for reuse in later launches. In a reusable system, costs of additional launches may be substantially reduced by reusing components of the initial system. However, a system may be subject to additional stresses during reentry of the reusable components and those components must be protected to remain viable for reuse during a later launch.
- Typical space flight launch vehicles are shaped for maximum efficiency during forward flight of the system, such as during launch. Conventional launch vehicles are characterized by elongate cylindrical bodies having a relatively constant cross-sectional shape from a nose of the vehicle to a tail of the vehicle. This conventional shape induces various aerodynamic and thermal stresses on the vehicle during launch and flight. Increased stresses on the vehicle may require additional supporting structure or thermal resistant materials, thereby increasing a weight of the vehicle.
- Conventional launch vehicles are further not typically effective in withstanding forces on the vehicle during reentry and descent of the system. For example, when the launch vehicle descends, various aerodynamic and thermal loads are placed on a fuselage of the system that differ from loads placed on the vehicle during launch and ascent of the vehicle. Reinforcing the launch vehicle to withstand loads placed on the vehicle during reentry and descent may further increase a weight of the vehicle, thereby increasing a required fuel load for launch of the vehicle.
- What is needed, therefore, is a space vehicle system that has improved aerodynamic characteristics that increase an aerodynamic efficiency of the vehicle during launch and that is capable of withstanding aerodynamic and thermal stress during reentry and descent of the vehicle.
- The above and other needs are met by a space launch vehicle that has improved aerodynamic characteristics that increase an aerodynamic efficiency of the vehicle during launch and that is capable of withstanding aerodynamic and thermal stress during reentry and descent of the vehicle. In a first aspect, a space launch vehicle is provided including: a first section having a surface and expanding in width from a nose end of a space vehicle to a trailing edge of the first section, wherein the first section shields a forward portion of the spacecraft during launch, ascent and forward flight; a second section having a surface and narrowing in width from a first end adjacent the trailing edge of the first section to a second end distal from the first end, wherein the second section shields the forward portion of the spacecraft during reentry and descent of the vehicle; a third section having a surface and a first end adjacent to the second end of the second section and a second end that is distal from the first end, the third section having a substantially continuous width along a length of the third section; a fourth section having a surface and expanding in width from a first end adjacent to the second end of the third section to a tail end of a space vehicle; and a fifth section including a heat shield formed on a tail surface of the space vehicle adjacent to the fourth section.
- In one embodiment, the space launch vehicle further includes a shock cone and spike formed on the nose end of the space vehicle. In another embodiment, the multi-planar space vehicle fuselage further includes a cargo bay located within the third section. In yet another embodiment, the multi-planar space vehicle fuselage further includes one or more air intakes formed in the third surface of the third section.
- In one embodiment, a maximum width of the fourth section at the tail end of the space vehicle is wider than a maximum width of the first section.
- In another embodiment, the multi-planar space vehicle fuselage further includes cascading isolator plates formed on the surface of the first section, the surface of the second section, and the surface of the fourth section. In yet another embodiment, each of the isolator plates includes a leading surface and a trailing surface, and wherein the leading surface has a slope that is shallower than a slope of the trailing surface.
- In another embodiment, the multi-planar space vehicle fuselage further includes a plurality of landing legs attached to the fuselage.
- In one embodiment, the multi-planar space vehicle fuselage further includes a skirt formed around the fuselage adjacent the second end of the second section.
- In another embodiment, the multi-planar space vehicle further includes an aerospike nozzle formed on an aft end of the vehicle at the fifth section. In yet another embodiment, the aerospike nozzle includes: a truncated spike including an outer edge and a surface formed on a rear portion of the truncated spike; a plurality of injectors on the surface of the truncated spike for emitting a gas from the surface of the truncated spike into a recirculation region behind the space vehicle; and an annular ring outlet formed on the fifth section between the outer edge of the truncated spike and an inner edge of the fifth section. In one embodiment, the truncated spike further includes a plurality of heat resistant tiles located on the surface of the truncated spike.
- In a second aspect, a space launch vehicle is provided including: a shock cone and spike formed on the nose end of the space vehicle; a first section adjacent to the shock cone and spike and having a surface and expanding in width from a nose end of a space vehicle to a trailing edge of the first section, the first section including a plurality of first cascade plates formed on the surface at least partially along a length of the first section, wherein the first section shields a forward portion of the spacecraft during launch, ascent and forward flight; a second section having a surface and narrowing in width from a first end adjacent the trailing edge of the first section to a second end distal from the first end, the second section including a plurality of second cascade plates formed on the surface at least partially along a length of the second section, wherein the second section shields the forward portion of the spacecraft during reentry and descent of the vehicle; a third section having a surface and a first end adjacent to the second end of the second section and a second end that is distal from the first end, the third section having a substantially continuous width along a length of the third section; a fourth section having a surface and expanding in width from a first end adjacent to the second end of the third section to a tail end of a space vehicle, the fourth section including a plurality of fourth section cascade plates formed on the surface at least partially along a length of the fourth section; and a fifth section including a heat shield formed on a tail surface of the space vehicle adjacent to the fourth section.
- In a third aspect, a space launch vehicle is provided including: a shock cone and spike formed on the nose end of the space vehicle; a first section adjacent to the shock cone and spike and having a surface and expanding in width from a nose end of a space vehicle to a trailing edge of the first section, the first section including a plurality of first cascade plates formed on the surface at least partially along a length of the first section, wherein the first section shields a forward portion of the spacecraft during launch, ascent and forward flight; a second section having a surface and narrowing in width from a first end adjacent the trailing edge of the first section to a second end distal from the first end, the second section including a plurality of second cascade plates formed on the surface at least partially along a length of the second section, wherein the second section shields the forward portion of the spacecraft during reentry and descent of the vehicle; a third section having a surface and a first end adjacent to the second end of the second section and a second end that is distal from the first end, the third section having a substantially continuous width along a length of the third section; a fourth section having a surface and expanding in width from a first end adjacent to the second end of the third section to a tail end of a space vehicle, the fourth section including a plurality of fourth section cascade plates formed on the surface at least partially along a length of the fourth section; a fifth section including a heat shield formed on a tail surface of the space vehicle adjacent to the fourth section; and cascading isolator plates formed on the surface of the first section, the surface of the second section, and the surface of the fourth section.
- Further features, aspects, and advantages of the present disclosure will become better understood by reference to the following detailed description, appended claims, and accompanying figures, wherein elements are not to scale so as to more clearly show the details, wherein like reference numbers indicate like elements throughout the several views, and wherein:
-
FIG. 1 shows a schematic side view of a space vehicle according to one embodiment of the present disclosure; -
FIGS. 2 and 3 show side views of a space vehicle including cascading plates according to embodiments of the present disclosure; -
FIG. 4 shows a bottom view of an aerospike nozzle of a space vehicle according to one embodiment of the present disclosure; -
FIG. 5 shows a cross-sectional side view of an aerospike nozzle of a space vehicle according to one embodiment of the present disclosure; -
FIG. 6 shows a cross-sectional view of a capsule bay according to one embodiment of the present disclosure; -
FIG. 7 shows a top view of a space launch vehicle according to one embodiment of the present disclosure; and -
FIG. 8 shows a side view of a space launch vehicle according to one embodiment of the present disclosure. - Various terms used herein are intended to have particular meanings. Some of these terms are defined below for clarity. The definitions given below are meant to cover all forms of the words being defined (e.g., singular, plural, present tense, past tense). If the definition of any term below diverges from the commonly understood and/or dictionary definition of such term, the definitions below control.
-
FIG. 1 shows a basic embodiment of aspace launch vehicle 10 that includes enhanced characteristics for improved efficiency during launch and reentry of thespace launch vehicle 10. Thespace launch vehicle 10 is shaped to withstand aerodynamic and thermal stress encountered during various stages of launch and reentry. Aerodynamic characteristics of thespace launch vehicle 10 reduce stresses on at least portions of thespace launch vehicle 10 and allow thespace launch vehicle 10 to function as a vertical takeoff vertical landing (“VTVL”) reusable single-stage-to-orbit (“SSTO”) vehicle. - The
space launch vehicle 10 includes a multi-planar fixed geometry planned fuselage 12 (“MPFGPF”) that defines a shape of thespace launch vehicle 10. Surfaces of thefuselage 12 may include a plurality of isolators to protect thespace launch vehicle 10 from stresses during launch and reentry. In addition to a geometry of thespace launch vehicle 10, additional systems manage a balance of weight onboard the vehicle and otherwise adjust characteristics of the vehicle to optimize the vehicle for both launch and reentry flight conditions. - The
fuselage 12 of thespace launch vehicle 10, as shown inFIG. 1 , includes planar surfaces formed on the fuselage that are shaped to resist thermal and aerodynamic stresses on thevehicle 10 during both launch and reentry conditions. Thevehicle 10 is formed into sections of surfaces on thefuselage 12 that are each shaped withstand aerodynamic and thermal stresses on the vehicle during various stages of launch and reentry. - The
fuselage 12 preferably includes ashock cone 14, afirst section 16, asecond section 18, athird section 20, afourth section 22, and afifth section 23 formed along a length of thespace launch vehicle 10. The sections of thefuselage 12 include surfaces that may be located on a windward side of thevehicle 10 wherein the surfaces are facing a free stream or a leeward side of thevehicle 10 wherein the surfaces are isolated from the free stream. Surfaces of thevehicle 10 may be located on a windward side when the vehicle travels in a forward direction, such as during launch, and may also be located on a leeward side when the vehicle travels in a reverse direction, such as during reentry of thespace launch vehicle 10. - The
shock cone 14 is formed on anose end 24 of thespace launch vehicle 10. A tip of theshock cone 14 is formed as a tapered andblunt spike 26 that initially contacts air as thespace launch vehicle 10 is moving in a forward direction, such as during launch of thevehicle 10. Theshock cone 14 is tapered and expands in width from thefront end 30 to amiddle portion 32 of theshock cone 14. Theshock cone 14 is then formed into a reverse taper wherein theshock cone 14 narrows in width from themiddle portion 32 to an end of theshock cone 14 that is adjacent tofirst section 16 of thefuselage 12. - The
first section 16 of thefuselage 12 abuts theshock cone 14. Thefirst section 16 is formed into a tapered cone and includes anouter surface 34 that expands in width from thenose end 24 to a trailingedge 36 of thefirst section 16. Theouter surface 34 is oriented as a windward-facing surface when thespace launch vehicle 10 is moving in a forward direction such that the leading end 28 of thevehicle 10 first encounters air during launch, ascent, and flight of thevehicle 10. - The
second section 18 of thefuselage 12 abuts the trailingedge 36 of thefirst section 16 and is formed into a reverse-tapered cone such that anouter surface 38 of thesecond section 18 narrows in width from afirst end 40 adjacent to the trailingedge 36 towards asecond end 42 near a midpoint of a length of thefuselage 12. A width of thefirst end 40 ofsecond section 18 at the trailingedge 36 is preferably less than a width offirst section 16 at the trailingedge 36 such that a leeward-facinglip 44 is created between thefirst section 16 and thesecond section 18. Thesecond section 18 tapers in width from thefirst end 40 to thesecond end 42. Thesecond section 18 is preferably sloped at an angle that is shallower than an angle of the slope of thefirst section 16 and preferably has a length that is longer than a length of thefirst section 16, as shown inFIG. 1 . Thesecond section 18 tapers to a width that is preferably equal to a width of thethird section 20, as discussed in greater detail below. - As shown in
FIG. 1 , askirt 45 may be formed around thefuselage 12 of thespace launch vehicle 10 adjacent thesecond end 42 of thesecond section 18. Theskirt 45 includes a sloped leading edge and a substantially flat trailing edge. During launch and forward flight of thespace launch vehicle 10, theskirt 45 protects thethird section 20 of thefuselage 10 while during descent and landing the flat trailing edge of theskirt 45 may slow a flow of air around the fuselage to aid in braking of thevehicle 10. - The
third section 20 preferably includes a substantially flat surface along a length of the third section. Afirst end 46 of thethird section 20 is located adjacent to thesecond end 42 of thesecond section 18. Thethird section 20 preferably has a diameter that is approximate or equal to a diameter of thesecond end 42 of thesecond section 18 such that a smooth surface is formed along a transition from thesecond section 18 to thethird section 20. Thethird section 20 is formed into a substantially continuous cross-sectional width along a length of thethird section 20 to asecond end 48 of thethird section 20. - The
fourth section 22 is formed adjacent to thesecond end 48 of thethird section 20 and forms a tail section of thefuselage 12. Thefourth section 22 is formed into a tapered cone expanding in diameter from afirst end 50 adjacent to thesecond end 48 of thethird section 20 to asecond end 52 of the fourth section. - The
fifth section 23 includes aheat shield 54 is formed on a tail surface of thefuselage 12 for shielding thevehicle 10 during reentry and descent. Theheat shield 54 is located on the tail surface of thevehicle 10 such that during reentry and descent wherein thevehicle 10 is travelling in a direction that is reverse from a direction of flight during launch and ascent, theheat shield 54 is on a windward surface of thevehicle 10 and shields thevehicle 10 from thermal loads during reentry. Theheat shield 54 is preferably formed of a plurality of heat resistant tiles, such as reinforced carbon or ceramic tiles placed on the tail surface of thefuselage 12. - The
fourth section 22 preferably includes one or more landing legs formed along thefourth section 22 for supporting thevehicle 10 during landing. The landing legs may be formed similar to known existing legs utilized on VTVL vehicles. For example, the landing legs may be folding landing legs that are retracted during launch and flight and that are extended during landing of thevehicle 10. While the above description contemplates the landing legs being located on thefourth section 22 of thevehicle 10, it is also understood that the landing legs may be mounted along other sections of thevehicle 10. - The
first section 16,second section 18,third section 20,fourth section 22, andfifth section 23 provide a shape of thevehicle 10 that reduce drag and increase lift and stability of thevehicle 10 during both launch and reentry. During launch and ascent of thevehicle 10, thefirst section 16 faces the flow of air and shields thesecond section 18 andthird section 20 from thermal and mechanical stresses. Drag is induced on thevehicle 10 by thefirst section 16, while thesecond section 18 creates a region of recirculation such that air along thesecond section 18 moves slower than air along thefirst section 16. The region of recirculation at thesecond section 18 counteracts drag induced on thefirst section 16 by pushing against thesecond section 18 and creating lift on thevehicle 10. At least part of thefourth section 22 also faces the stream during launch and ascent of thevehicle 10. A flow of air along thethird section 20 is laminar and higher velocity than a flow along thesecond section 18, making the third section 20 a preferable location for an air intake 21 for a propulsion system of thevehicle 10. When thevehicle 10 is moving in a forward direction, such as during launch, ascent, and forward flight, thesecond section 18 is a leeward surface and an area of recirculation and turbulent air flow. Air flowing along thesecond section 18 is of lower speed and higher pressure, causing lift on thesecond section 18 of thevehicle 10 and stabilizing thevehicle 10 during flight. - The shape of the
vehicle 10 including the various sections described herein further induces positive static stability of thevehicle 10. Regions of pressure and recirculation along thefuselage 12 of thevehicle 10 encourage thevehicle 10 to maintain a direction of flight when thevehicle 10 is moving in a forward direction. - During reentry and descent of the
vehicle 10, thevehicle 10 is travelling in a substantially reverse direction such that theheat shield 54 is facing the flow of air, thefourth section 22 andfirst section 16 are on leeward facing sides of thevehicle 10. During descent, thesecond section 18 is on a windward side of thevehicle 10 and faces the flow of air. Compression, a consequence of the flow of air on the windward-facingsecond section 18 act to slow a descent of thevehicle 10 during descent. - Referring now to
FIGS. 2 and 3 , in one embodiment a plurality of cascadingplates 53 are formed on surfaces of thefuselage 12 to isolate portions of thefuselage 12 from friction and thermal and mechanical loads. The cascadingplates 53 are preferably formed on theouter surface 34 of thefirst section 16 and theouter surface 38 of thesecond section 18, as shown inFIG. 1 . The cascadingplates 53 are also preferably formed on theouter surface 34 of thefourth section 22. The cascadingplates 53 may also be formed on any outer surfaces of any landing legs or other structures of thefourth section 22 to shield those components during launch and reentry. The cascadingplates 53 are preferably formed of a high temperature material for protecting thefuselage 12 from thermal stress on thevehicle 10 during launch and reentry. The cascadingplates 53 include a sloped leadingsurface 55 and a sloped trailingsurface 58. The sloped leadingsurface 55 is preferably sloped at an angle that is shallower than the sloped trailingsurface 58 of the cascadingplates 53. - The cascading
plates 53 formed on thevehicle 10 isolate portions of thefuselage 12 from thermal and mechanical loads during ascent and descent and further dissipate heat generated during flight. The cascadingplates 53 located on surfaces of thevehicle 10 create multiple shock waves along portions of thefuselage 12 that isolate portions of succeeding shock cones from oncoming air flow, thereby reducing the total drag and friction of the isolated portions and collectively to thevehicle 10. Theshock cone 14 creates an initial isolation effect prior to air contacting thefirst section 16 of thefuselage 12 to create an initial isolation effect before air reaches the cascadingplates 53 formed on thefuselage 12. - Referring to
FIGS. 4 and 5 , thevehicle 10 preferably includes anaerospike nozzle 56 formed on an aft end of thevehicle 10 at the tail surface of thefuselage 12. Theaerospike nozzle 56 preferably includes atruncated spike 57 extending from the aft end of thevehicle 10. Anannular ring outlet 58 is formed between anouter edge 59 of thetruncated spike 57 and aninner edge 60 of the fifth section 23 (FIG. 1 ). In one embodiment, one or more mechanical doors or actuating petals are located around theannular ring outlet 58 to cover and protect theannular ring outlet 58 during reentry of thevehicle 10. A sloped trailingedge 65 is formed between an outer surface of thefourth section 22 and theinner edge 60 of thefifth section 23 to aid in re-attaching a flow of air from the outer surface of thefourth section 22 to thetruncated spike 57. - A plurality of
nozzles 61 are annularly located around thetruncated spike 57 and direct exhaust gases towards thetruncated spike 57 and out of the aft end of thevehicle 10. A plurality ofinjectors 62 are formed on asurface 63 of thetruncated spike 57 and are preferably in communication with a combustion system of thevehicle 10 or other source of gas such that fuel, oxidizer, or other gases are emitted from theinjectors 62 into arecirculation region 64 formed behind thetruncated spike 57 during launch and forward flight of thevehicle 10. Thesurface 63 of thetruncated spike 57 preferably includes a plurality of heat resistant tiles forming theheat shield 54 to protect thevehicle 10 during reentry and descent of thevehicle 10. - During launch and flight of the
vehicle 10, oxidizer and fuel are combusted at thenozzles 61 and the resulting exhaust is directed onto thetruncated spike 57. During flight, a flow of air from thefourth section 22 of thefuselage 12 recirculates adjacent thefifth section 23 and the recirculating flow pushes the exhaust towards thetruncated spike 57. One or more of fuel, oxidizer, and other gases are emitted from theinjectors 62 into therecirculation region 64 where they may be ignited by the exhaust gases, thereby generating additional thrust against thesurface 63 of thetruncated spike 57. While fuel or oxidizer are preferably emitted from theinjectors 62 into therecirculation region 64, it is also understood that various other gases may be emitted from theinjectors 62 into therecirculation region 64, thereby increasing pressure in therecirculation region 64. - Referring now to
FIGS. 6-8 , thespace launch vehicle 10 further includes acapsule bay 64 located within thefuselage 12 of thespace launch vehicle 10. Thecapsule bay 64 is preferably located along a midpoint of thespace launch vehicle 10 and encloses acapsule 62 adjacent to amain cargo bay 66. Themain cargo bay 66 includes acargo bay door 67 that may either be formed as opposing hinging doors or a single piece door mounted on hinges at one side of thedoor 67. Thecapsule bay 64 includes acapsule bay door 68 attached to the fuselage with one or moreexplosive bolts 70 and anexplosive hinge 72. Thecapsule 62 is located within thecapsule bay 64 adjacent to acapsule rest 74 for supporting thecapsule 62 within thefuselage 12. - The
capsule bay door 68 is configured to be jettisoned in an emergency such that thecapsule 62 may be ejected from thespace launch vehicle 10. Theexplosive bolts 70 andexplosive hinge 72 may be activated during an abort sequence. Rockets or other propulsion systems may jettison thecapsule bay door 68 from a side of thefuselage 12. Thecapsule 62 may include one or more rockets that are activated to eject thecapsule 62 out of the side of thespace launch vehicle 10 and away from thevehicle 10. Thecapsule bay door 68 is semicircular in shape, thereby only requiring thecapsule bay door 68 to be jettisoned during an abort sequence for the capsule to be ejected, thereby reducing a size and number of components to be jettisoned during abort of a launch or flight sequence. - The space launch vehicle advantageously provides a reusable vehicle configured for VTVL wherein a mechanical load and forces primarily act on a single axis along a length of the vehicle. The space launch vehicle includes enhanced aerodynamic characteristics that allow the vehicle to operate in both a forward direction during launch and flight and in a reverse direction during reentry and descent.
- The foregoing description of preferred embodiments of the present disclosure has been presented for purposes of illustration and description. The described preferred embodiments are not intended to be exhaustive or to limit the scope of the disclosure to the precise form(s) disclosed. Obvious modifications or variations are possible in light of the above teachings. The embodiments are chosen and described to provide the best illustrations of the principles of the disclosure and its practical application, and to thereby enable one of ordinary skill in the art to utilize the concepts revealed in the disclosure in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the disclosure as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably entitled.
Claims (4)
1. A space vehicle comprising:
an aerospike nozzle formed on an aft end of the vehicle;
a truncated spike including an outer edge and a surface formed on a rear portion of the truncated spike; and
an annular ring outlet formed at the aft end of the vehicle between the outer edge of the truncated spike and an inner edge of the aft end of the space vehicle.
2. The space vehicle of claim 1 , further comprising a plurality of injectors on the surface of the truncated spike for emitting a gas from the surface of the truncated spike into a recirculation region behind the space vehicle.
3. The space vehicle of claim 1 , the truncated spike further comprising a plurality of heat resistant tiles located on the surface of the truncated spike.
4. A space vehicle comprising:
an aerospike nozzle formed on an aft end of the vehicle;
a truncated spike including an outer edge and a surface formed on a rear portion of the truncated spike;
a plurality of injectors on the surface of the truncated spike for emitting a gas from the surface of the truncated spike into a recirculation region behind the space vehicle; and
an annular ring outlet formed at the aft end of the vehicle between the outer edge of the truncated spike and an inner edge of the aft end of the space vehicle.
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US10023329B1 (en) * | 2017-03-04 | 2018-07-17 | Othniel Mbamalu | Space vehicle system |
US11535403B1 (en) * | 2018-11-14 | 2022-12-27 | CubeCab Inc. | Customization and automation of launch vehicle |
US12031507B2 (en) | 2019-11-27 | 2024-07-09 | Stoke Space Technologies, Inc. | Augmented aerospike nozzle, engine including the augmented aerospike nozzle, and vehicle including the engine |
US11933249B2 (en) | 2021-12-30 | 2024-03-19 | Blue Origin, Llc | Reusable upper stage rocket with aerospike engine |
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Also Published As
Publication number | Publication date |
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US10023329B1 (en) | 2018-07-17 |
US20190009933A1 (en) | 2019-01-10 |
US10773834B2 (en) | 2020-09-15 |
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