NL2028388A - A Kind of Composite Propulsion Joint Based on Solid Fuel - Google Patents

A Kind of Composite Propulsion Joint Based on Solid Fuel Download PDF

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Publication number
NL2028388A
NL2028388A NL2028388A NL2028388A NL2028388A NL 2028388 A NL2028388 A NL 2028388A NL 2028388 A NL2028388 A NL 2028388A NL 2028388 A NL2028388 A NL 2028388A NL 2028388 A NL2028388 A NL 2028388A
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Netherlands
Prior art keywords
flange
hinge body
solid fuel
joint body
adapter ring
Prior art date
Application number
NL2028388A
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Dutch (nl)
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NL2028388B1 (en
Inventor
Liu Qingchao
Sun Tianyi
Jia Minxiu
Wang Zhiqi
Liu Wenzhi
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Univ Inner Mongolia Technology
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Publication of NL2028388A publication Critical patent/NL2028388A/en
Application granted granted Critical
Publication of NL2028388B1 publication Critical patent/NL2028388B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/32—Constructional parts; Details not otherwise provided for
    • F02K9/34—Casings; Combustion chambers; Liners thereof
    • F02K9/343—Joints, connections, seals therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/80—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by thrust or thrust vector control
    • F02K9/84—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by thrust or thrust vector control using movable nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/40—Movement of components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape
    • F05D2250/75—Shape given by its similarity to a letter, e.g. T-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention relates to a kind of composite propulsion coupling based on solid fuel, including: the front joint body and the rear joint body which are of annular structure. The adjustable adapter ring is of annular structure, and its cross section is of U-shaped structure formed by connecting the L-shaped upper plate and the lower plate with the adjusting screw; each layer of the front joint body is set in parallel to the L-shaped upper plate, the outer surface ofthe front joint body is fixed on the inner surface ofthe L-shaped upper plate, each layer ofthe rearjoint body is set in parallel to the lower plate, and the upper surface of the rearjoint body is fixed on the outer surface of the lower plate; the rear joint flange is composed of cylinder and flange, the flange is connected to the upper port ofthe cylinder, and the flange is set along the circumferential direction of the cylinder; the upper surface of the flange is fixed with the lower surface of the rear joint body; the flange in diffuser section is of cylindrical structure, and the inner surface of the front joint body is fixed on the outer surface of the upper port ofthe flange in diffuser section. Such double-flexible joint features better full-axis swing performance, smaller pneumatic loss and smaller actuating torque, and can overcome the initial shearing deformation of thejoint.

Description

A Kind of Composite Propulsion Joint Based on Solid Fuel Technical Field The invention relates to the technical field of solid rocket engine, in particular to a kind of composite propulsion joint based on solid fuel.
Background Technology The flexible joint nozzle is a mechanical thrust vector control system of solid rocket engine, and serves the function of converting the heat energy of combustion products into the kinetic energy of high-speed jet flow, so as to provide controllable axial and lateral flight thrust for the aircraft.
It is a power device for generating controllable thrust by energy conversion of the engine.
The flexible joint nozzle is composed of movable body, fixed body, front joint, rear joint and actuator.
The joint is a connecting part between the fixed body and the movable body and is also a load supporting part.
In order to meet the needs for the working performance of the joint nozzle, both the rubber elastic sheet and the metal reinforcing sheet of the front flexible joint and the rear flexible joint shall be designed into spherical section rings with common geometric rotation center and different radiuses, and the rubber elastic sheet and the metal reinforcing sheet are alternately bonded according to corresponding sizes.
When the flexible joint nozzle is working, under the excitation of the actuator hinged between the movable body and the fixed body, the elastic sheet of the front flexible joint generates large shearing deformation first, so that the reinforcing sheet rotates by a certain angle, the movable body swings by an angle around the front pivot point, the aerodynamic force is redistributed, the rear flexible joint generates additional swing moment, the front flexible joint is forced to deform again, the pneumatic load is effectively converted into swing moment, and then the movable body is pushed to swing around the actual pivot point of the movable body, so that attitude control of the aircraft is realized.
Content of the Utility Model The purpose of this invention is to improve the technical defects of single flexible joint.
This invention proposes a kind of composite propulsion joint based on solid fuel.
This kind of dual flexible joint has better full-axis swing performance, less pneumatic loss, smaller action moment -1-
and lighter weight, and can lessen the initial shearing deformation and big pivot point drift of single flexible joint nozzle with better plasticity and stronger ability in carrying loads of different directions. In order to serve the above purpose, this invention adopts the following technical scheme: A kind of composite propulsion joint based on solid fuel, including: front joint body, adjustable adapter ring, rear joint body, rear joint flange and diffusion section flange; wherein, the said front joint body and rear joint body are in annular structure. The said adjustable adapter ring is of annular structure, the cross section is of U-shaped structure formed by connecting L-shaped upper plate and lower plate, in addition, the said adjustable adapter ring is set in the manner that the L-shaped upper plate is arranged above and the lower plate is below the L-shaped upper plate, and the opening of the said U-shaped structure faces inwards; in addition, the said L-shaped upper plate is provided with throughout screw hole, and the said screw hole is connected with adjusting screw, and several adjusting screws are set along the circumferential direction of the adjustable adapter ring. Each layer of the front joint body is arranged in parallel to the L-shaped upper plate, the outer surface of the front joint body is fixed on the inner surface of the L-shaped upper plate, each layer of the said rear joint body is set in parallel to the lower plate, and the upper surface of the rear joint body is fixed on the outer surface of the lower plate. The said rear joint flange is composed of cylinder and flange, wherein the flange is connected to the upper port of the cylinder and is set along the circumferential direction of the cylinder, namely the flange is of annular structure; the upper surface of the said flange is fixed with the lower surface of the rear joint body to support the rear joint body. The flange in diffuser section has tubular structure, and its upper port extends outwards and forms a round convex surface, and the lower port of the flange in diffuser section expands outwards and forms the horn mouth, the internal surface of the said joint body is fixed on the surface of the convex surface, and the flange in the diffuser section is set inside the front joint body, adjustable adapter ring, rear joint body, and rear back joint flange, and there's gap between the adjustable adapter ring and the flange in the diffuser section, and the front joint body, adjustable adapter ring, rear joint body, adjustable adapter ring are of coaxial setting with the flange in the diffuser section.
-2-
Further, the said front joint body and the rear joint body are of composite layer structure formed by alternately bonding several annular elastic sheets and annular rigid reinforcing sheets, and the elastic sheets and the rigid reinforcing sheets are set concentrically.
Further, the said front joint body is of continuous diameter-changing structure with the upper port smaller than the lower port, preferably, the included angle between the lower surface of the front joint body and the center line of the front joint body is 50°, that is, the front joint body is obliquely arranged relative to its center line.
Further, the rear joint body is of continuous diameter-changing structure with the upper port larger than the lower port, preferably, the included angle between the lower surface of the rear joint body and the center line of the rear joint body is 40°, that is, the rear joint body is obliquely set relative to its center line.
Further, the thickness of the said elastic sheet and the thickness of the rigid reinforcing sheet are 1.0-1.6mm, optionally, the said elastic sheet is made of rubber, and the said rigid reinforcing sheet is made of steel.
Further, the said adjustable adapter ring is set at the central connecting position of the U-shaped cross-section structure, the gap is annular, optionally, the gap is adjustable within the range of 0-3 mm. When using the joint nozzle, the adjusting screw is adjusted to keep the gap at 0mm, and when storing the joint nozzle, the initial shearing deformation of the front joint elastic sheet under the action of the structural gravity is overcome by adjusting the gap.
Compared with the existing technology, this invention has the following beneficial effects: the composite propulsion joint in this invention is double-flexible joint, and has the advantages that: firstly, it can achieve full-axis swing and the repeatability of the swing performance is good, which can meet the requirement of large lateral force. Secondly, the pneumatic loss of double-flexible joint is less, and swing moment is less. When reducing the difficulty of servo mechanism development, it can meet the normal work demand by adopting smaller servo, which can also reduce the weight of the joint nozzle. Thirdly, the adjustable adapter ring can overcome the initial shear deformation of the joint due to structural weight during storage. Moreover, the position of double-flexible joint can also help to reduce the drift of pivot point.
-3-
Illustration Figure 1 is the Structure Schematic of the Composite Propulsion Joint Based on Solid Fuel in the embodiment of this invention.
Figure 2 is the Structure Schematic of the Front Joint Body in the embodiment of this invention.
Figure 3 is the Structure Schematic of the Adjustable Adapter Ring in the embodiment of this invention.
Figure 4 is the Profile Schematic of the Adjustable Adapter Ring in the embodiment of this invention.
Figure 5 is the Structure Schematic of the Rear Joint Body in the embodiment of this invention.
Figure 6 is the Structure Schematic of the Rear Joint Flange in the embodiment of this invention.
Figure 7 is the Structure Schematic of the Flange in Disperser Section in the embodiment of this invention.
The marks in the figure represent: 1 - Front joint body; 2 - Adjustable adapter ring, 201 - L-shaped upper plate, 202 - Lower plate, 203 - Adjusting screw; 3 - Rear joint body; 4 - Rear joint flange, 401 - Cylinder, 402 - Flange; 5 - Flange in diffuser section, 501 - Convex surface, 502 - Horn mouth.
Specific Embodiment Refer to the Figures 1-7 which illustrate a kind of composite propulsion joint based on solid fuel, including: front joint body 1, adjustable adapter ring 2, rear joint body 3, rear joint flange 4 and flange in diffuser section 5; wherein: Both the front joint body 1 and the rear joint body 3 are of annular structure, the front joint body 1 is of composite layer structure formed by bonding five layers of annular elastic sheets and four layers of annular rigid reinforcing sheets after being stacked respectively layer by layer, the rear joint body 3 is of composite layer structure formed by bonding seven layers of annular elastic sheets and six layers of annular rigid reinforcing sheets after being stacked alternately, and the elastic sheets and the rigid reinforcing sheets are set concentrically.
The thickness of -4-
the said elastic sheet and the thickness of the said rigid reinforcing sheet are 1.5mm respectively, wherein, the elastic sheet is made of rubber, while the rigid reinforcing sheet is made of steel.
Further, the said front joint body 1 is of continuous diameter-reducing structure with the upper port smaller than the lower port, the said rear joint body 3 is of continuous diameter-reducing structure with the upper port larger than the lower port. In this embodiment, the included angle between the lower surface of the front joint body 1 and the center line of the rear joint body 3 is 50°, and the included angle between the lower surface of the rear joint body 3 and the center line of the rear joint body 3 is 40°, that is, both the front joint body 1 and the rear joint body 3 are obliquely set relative to the center line of the composite propulsion joint.
The adjustable adapter ring 2 directly contacting with the two flexible joints (i. e. the front joint body 1 and the front joint body 3) is adopted to closely connect with the joints and adjust the gap, referring to Figures 3 and 4 for details. The said adjustable adapter ring 2 is of annular structure, the cross section of it is a U-shaped structure formed by connecting the L-shaped upper plate 201 and the lower plate 202. Moreover, the said adjustable adapter ring 2 is set in the manner that the L-shaped upper plate 201 is on the upper side and the lower plate 202 is under the L-shaped upper plate 201, and the opening of the said U-shaped structure faces inwards. In addition, the throughout screw hole is set in the said L-shaped upper plate 201, the adjusting screw 203 is connected in the said screw hole, and several adjusting screws 203 are annularly distributed along the circumferential direction of the adjustable adapter ring 2. The gap between the L-shaped upper plate 201 and the lower plate 202 or the opening of the U-shaped structure can be adjusted by screwing the adjusting screw 203 to the lower plate 202.
Each layer of the said front joint body 1 is set in parallel with the L-shaped upper plate 201, the outer surface of the front joint body 1 is fixed on the inner surface of the L-shaped upper plate 201, each layer of the rear joint body 3 is set in parallel with the lower plate 202, and the upper surface of the rear joint body 3 is fixed on the outer surface of the lower plate 202.
The said adjustable adapter ring 4 is composed of a cylinder 401 and flange 402, wherein, the flange 402 is connected to the upper port of the cylinder 401, and the flange 402 is set along the circumferential direction of the cylinder 401, that is, the flange 402 is of annular structure; -5-
the upper surface of the flange 402 is fixed to the lower surface of the rear joint body 3, thereby supporting the rear joint body 3.
The said flange 5 in diffuser section is of cylindrical structure, its upper port extends outwards to form a circle of convex surface 501, the lower port of the flange 5 in the diffuser section extends outwards to form the horn mouth 502, the inner surface of the said front joint body 1 is fixed on the outer surface of the convex surface 501, the flange 5 in the diffuser section is set inside the front joint body 1, the adjustable adapter ring 2, the rear joint body 3 and the rear joint flange 4, and there's gap between the rear joint flange 4 and the flange 5 in the diffuser section, and the front joint body 1, the adjustable adapter ring 2, the rear joint body 3, the rear joint flange 4 and the flange 5 in diffuser section are set coaxially. -6-

Claims (10)

ConclusiesConclusions 1. Type samengesteld aandrijfscharnier op basis van vaste brandstof, met het kenmerk, dat dit omvat: voorste scharnierlichaam, instelbare adapterring, achterste scharnierlichaam, achterste scharnierflens en flens in de diffusorsectie, waarbij: zowel het voorste scharnierlichaam als het achterste scharnierlichaam een ringvormige constructie zijn; waarbij de instelbare adapterring een ringvormige constructie is, de doorsnede van de instelbare adapterring een U-vormige constructie is die wordt gevormd door het verbinden van de L-vormige bovenplaat en de onderplaat, waarbij de instelbare adapterring zodanig is geplaatst dat de L-vormige bovenplaat is gelegen boven de L-vormige bovenplaat, de onderplaat is gelegen onder de L-vormige bovenplaat, en de opening van de U-vormige constructie naar binnen is gericht; verder is het doorlopende schroefgat gelegen in de L-vormige bovenplaat, de instelschroef is verbonden in het schroefgat, en verscheidene instelschroeven zijn ringvormig verdeeld langs de omtrekrichting van de instelbare adapterring; elke laag van het voorste scharnierlichaam parallel met de L-vormige bovenplaat is gelegen, het buitenvlak van het voorste scharnierlichaam is bevestigd op het binnenvlak van de L- vormige bovenplaat, elke laag van het achterste scharnierlichaam parallel met de onderplaat is gelegen, en het bovenvlak van het achterste scharnierlichaam is bevestigd op het buitenvlak van de onderplaat; de achterste scharnierflens bestaat uit cilinder en flens, waarbij de flens is verbonden met de bovenste poort van de cilinder en is gelegen langs de omtrekrichting van de cilinder; het bovenvlak van de flens is bevestigd aan het ondervlak van het achterste scharnierlichaam; de flens in de diffusorsectie een cilindrische constructie heeft, waarbij de bovenste poort hiervan zich naar buiten uitstrekt om een cirkel van convex oppervlak te vormen, waarbij de onderste poort van de flens in de diffusorsectie zich naar buiten uitstrekt om de hoornmond te vormen, het binnenvlak van het voorste scharnierlichaam is bevestigd op het buitenvlak van het convexe oppervlak, de flens in de diffusorsectie is gelegen binnen het voorste scharnierlichaam, de instelbare adapterring, het achterste scharnierlichaam en de achterste scharnierflens; de tussenruimte is gevormd tussen de achterste scharnierflens en de flens in de diffusorsectie. Het voorste scharnierlichaam, de instelbare adapterring, het achterste scharnierlichaam, de achterste scharnierflens en de flens in de diffusorsectie zijn coaxiaal gelegen.1. Solid fuel composite drive joint type, characterized in that it includes: front pivot body, adjustable adapter ring, rear pivot body, rear pivot flange and flange in the diffuser section, wherein: both the front pivot body and the rear pivot body are annular structure ; wherein the adjustable adapter ring is an annular structure, the cross section of the adjustable adapter ring is a U-shaped structure formed by connecting the L-shaped top plate and the bottom plate, the adjustable adapter ring is positioned such that the L-shaped top plate is located above the L-shaped top plate, the bottom plate is located below the L-shaped top plate, and the opening of the U-shaped structure faces inward; further, the through screw hole is located in the L-shaped top plate, the adjustment screw is connected in the screw hole, and several adjustment screws are annularly distributed along the circumferential direction of the adjustable adapter ring; each layer of the front hinge body is parallel to the L-shaped top plate, the outer surface of the front hinge body is fixed to the inner surface of the L-shaped top plate, each layer of the rear hinge body is parallel to the bottom plate, and the upper surface of the rear hinge body is mounted on the outer surface of the bottom plate; the rear pivot flange is composed of cylinder and flange, the flange being connected to the upper port of the cylinder and located along the circumferential direction of the cylinder; the top surface of the flange is attached to the bottom surface of the rear hinge body; the flange in the diffuser section has a cylindrical construction, the upper port thereof extending outwardly to form a circle of convex surface, the lower port of the flange in the diffuser section extending outwardly to form the horn mouth, the inner face of the front hinge body is mounted on the outer surface of the convex surface, the flange in the diffuser section is located within the front hinge body, the adjustable adapter ring, the rear hinge body and the rear hinge flange; the gap is formed between the rear hinge flange and the flange in the diffuser section. The front hinge body, the adjustable adapter ring, the rear hinge body, the rear hinge flange and the flange in the diffuser section are coaxially located. 2. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusie 1, met het kenmerk, dat: het voorste scharnierlichaam en het achterste scharnierlichaam een samengestelde laagconstructie zijn die wordt gevormd door het alternerend verbinden van verscheidene ringvormige elastische bladen en ringvormige starre versterkingsbladen, en waarbij de elastische bladen en de starre versterkingsbladen concentrisch zijn gelegen.The solid fuel composite drive hinge according to claim 1, characterized in that : the front hinge body and the rear hinge body are a composite layer structure formed by alternating connecting several annular elastic blades and annular rigid reinforcement blades, and wherein the elastic blades and the rigid reinforcement blades are located concentrically. 3. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusie 1, met het kenmerk, dat: het voorste scharnierlichaam een continu diameter-reducerende constructie is, waarbij de bovenste poort kleiner is dan de onderste poort.The solid fuel composite drive hinge of claim 1, characterized in that : the front hinge body is a continuously diameter-reducing structure, the upper port being smaller than the lower port. 4. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusie 2, met het kenmerk, dat: de hoek tussen het ondervlak van het voorste scharnierlichaam en de middenlijn van het achterste scharnierlichaam bij voorkeur 50° is.A solid fuel composite drive hinge according to claim 2, characterized in that : the angle between the lower surface of the front hinge body and the centerline of the rear hinge body is preferably 50°. 5. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusie 1, met het kenmerk, dat: het achterste scharnierlichaam een continu diameter-reducerende constructie is, waarbij de bovenste poort groter is dan de onderste poort.The solid fuel composite drive hinge of claim 1, characterized in that : the rear hinge body is a continuously diameter-reducing structure, the upper port being larger than the lower port. 6. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusie 1, met het kenmerk, dat: de ingesloten hoek tussen het ondervlak van het achterste scharnierlichaam en de middenlijn van het achterste scharnierlichaam 40° is.The solid fuel composite drive hinge according to claim 1, characterized in that : the included angle between the bottom surface of the rear hinge body and the centerline of the rear hinge body is 40°. 7. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusies 1 - 6, met het kenmerk, dat: de dikte van zowel het elastische blad als het starre versterkingsblad 1,0-1,6 mm is.A solid fuel composite drive joint according to claims 1-6, characterized in that : the thickness of both the elastic blade and the rigid reinforcing blade is 1.0-1.6 mm. 8. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusie 7, met het kenmerk, dat: het elastische blad is gemaakt van rubber.The solid fuel composite drive joint of claim 7, characterized in that : the elastic blade is made of rubber. 9. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusie 7, met het kenmerk, dat: het starre versterkingsblad is gemaakt van staal.A solid fuel composite drive joint according to claim 7, characterized in that : the rigid reinforcing blade is made of steel. 10. Samengesteld aandrijfscharnier op basis van vaste brandstof volgens conclusie 1, met het kenmerk, dat: de instelbare adapterring is gelegen op de centrale verbindingspositie van de doorsnede met U-vormige constructie, en de tussenruimte ringvormig is.The solid fuel composite drive joint according to claim 1, characterized in that : the adjustable adapter ring is located at the central connecting position of the section of U-shaped construction, and the gap is annular.
NL2028388A 2021-01-07 2021-06-04 A Kind of Composite Propulsion Joint Based on Solid Fuel NL2028388B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120034484.7U CN214247531U (en) 2021-01-07 2021-01-07 Composite propulsion joint based on solid fuel

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NL2028388A true NL2028388A (en) 2022-07-22
NL2028388B1 NL2028388B1 (en) 2022-10-10

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NL (1) NL2028388B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180128209A1 (en) * 2016-11-09 2018-05-10 Orbital Atk, Inc. Flexible bearing assemblies, rocket motors including such assemblies, and methods of forming flexible bearings
CN109209683A (en) * 2018-11-01 2019-01-15 内蒙古工业大学 The design of solid rocket motor nozzle double-flexibility joint structure
CN110107429A (en) * 2018-11-01 2019-08-09 内蒙古工业大学 A kind of design of solid propellant rocket double-flexibility spray nozzle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180128209A1 (en) * 2016-11-09 2018-05-10 Orbital Atk, Inc. Flexible bearing assemblies, rocket motors including such assemblies, and methods of forming flexible bearings
CN109209683A (en) * 2018-11-01 2019-01-15 内蒙古工业大学 The design of solid rocket motor nozzle double-flexibility joint structure
CN110107429A (en) * 2018-11-01 2019-08-09 内蒙古工业大学 A kind of design of solid propellant rocket double-flexibility spray nozzle

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CN214247531U (en) 2021-09-21
NL2028388B1 (en) 2022-10-10

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