WO2012012474A2 - Personal aircraft - Google Patents
Personal aircraft Download PDFInfo
- Publication number
- WO2012012474A2 WO2012012474A2 PCT/US2011/044591 US2011044591W WO2012012474A2 WO 2012012474 A2 WO2012012474 A2 WO 2012012474A2 US 2011044591 W US2011044591 W US 2011044591W WO 2012012474 A2 WO2012012474 A2 WO 2012012474A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotors
- wing
- fuselage
- aircraft
- coupled
- Prior art date
Links
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/22—Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C29/00—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/08—Helicopters with two or more rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/12—Rotor drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C29/00—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
- B64C29/0008—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis horizontal when grounded
- B64C29/0016—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis horizontal when grounded the lift during taking-off being created by free or ducted propellers or by blowers
- B64C29/0025—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis horizontal when grounded the lift during taking-off being created by free or ducted propellers or by blowers the propellers being fixed relative to the fuselage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/38—Adjustment of complete wings or parts thereof
- B64C3/56—Folding or collapsing to reduce overall dimensions of aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/08—Aircraft not otherwise provided for having multiple wings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D41/00—Power installations for auxiliary purposes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/10—Drag reduction
Definitions
- This disclosure relates generally to a personal aircraft configured to provide safe operations while achieving robust control.
- the described invention includes an aircraft with vertical takeoff and landing capability, and which provides vertical and horizontal thrust in a controlled fashion for hover, transition and cruise flight.
- VTOL vertical takeoff and landing
- the rotary wing aircraft, or helicopter is one common type of VTOL aircraft.
- Helicopters have large rotors that provide both vertical and horizontal thrust. In order for the rotors to perform this dual function across a range of airspeeds, the rotors are typically quite complex. Depending on the vehicle flight condition, the rotor blades must be at different orientation angles around the 360 degrees of azimuth rotation to provide the needed thrust. Therefore, rotors have both collective and cyclic variation of the blade orientation angle.
- Cyclic varies the angle of each blade equally, independent of the 360-degree rotation azimuth angle. Cyclic varies the blade angle of attack as a function of the 360-degree rotation azimuth angle. Cyclic control allows the rotor to be tilted in various directions and therefore direct the thrust of the rotor forwards, backwards, left or right. This direction provides control forces to move the helicopter in the horizontal plane and respond to disturbances such as wind gusts.
- Helicopter rotors are large and unprotected from hitting nearby obstacles.
- rotors are mechanically complex and require maintenance.
- the rotors generally rotate at a low speed; this results in heavy transmissions between the rotor and motor.
- the transmissions, or gearboxes decrease the vehicle payload potential, as well as vehicle safety. Because of the mechanical complexity across the entire vehicle system, many parts are single points of failure. Because of this lack of redundancy, frequent inspections and
- the described embodiments provide a personal aircraft with a configuration that is safe, quiet, and efficient, as well as easy to control, highly compact, and which is able to accomplish vertical takeoff and landing with transition to and from forward flight.
- the aircraft configuration includes multiple rotors oriented to provide vertical thrust for lift and control during takeoff, transition to and from forward flight, and landing.
- the rotors are located longitudinally along the port and starboard sides of the fuselage, with two or more rotors located on each side.
- the fuselage carries a variable-weight payload.
- the aircraft has tandem wings at the front and rear of the vehicle with a combined center of lift near the center of gravity (CG) of the aircraft.
- CG center of gravity
- the wings provide lift and control during cruise, with one or more aft-located propellers to provide forward thrust.
- the combination of vertical lift rotors and front and rear tandem wings bound the rotors, permitting movement in the aircraff s center of gravity while still enabling the vehicle to maintain vertical and horizontal flight control.
- the forward and rear wings are also located to provide a boundary to avoid foreign object damage (FOD) to the lift rotors.
- the control surfaces which include elevator and ailerons, are usable to compensate for changes in CG of the aircraft during flight by adjusting the center of lift, in addition to changing angle of attack and attitude.
- the vertical lift rotors are arranged around the CG, and the thrust of each rotor is adjustable, which permits the relocation of the center of lift in vertical flight if the CG shifts.
- a separate electric motor and controller powers each vertical lift rotor, in order to provide lift system redundancy from failure of one or more lifting rotors.
- the vertical thrust rotors are embedded in ducts that conceal them and provide increased lift.
- protective shrouding guards against contact with other objects and prevent FOD to the rotors.
- the protective shielding in combination with in-line vertical lift rotors provide low cruise drag for efficient flight.
- Low tip speed vertical lift rotors are used in various embodiments to produce low community noise levels during takeoff, transition, and landing.
- Embodiments with a low front wing and high rear wing with winglets provide high aerodynamic efficiency while also providing yaw stability for the aircraft.
- the wings fold to provide a compact vehicle footprint when in hover or while on the ground.
- Some embodiments of the wing have control surfaces only on the inner part of the wing fold so that no articulating control linkages are required. Since the lift rotors that are used for vertical lift are separate from the forward thrust propellers, each is optimized for its specific operating conditions. Such a vehicle can be used for either piloted or unpiloted embodiments across a range of occupant sizes or payloads.
- FIG. 1 is a top view of a personal aircraft vehicle in accordance with one embodiment.
- FIG. 2 illustrates a second view of a personal aircraft vehicle in accordance with one embodiment.
- FIG. 3 illustrates a front view of a personal aircraft vehicle in accordance with one embodiment of the present invention.
- FIG. 4 illustrates a view of the left side of a personal aircraft vehicle in accordance with one embodiment.
- FIG. 5 illustrates a view of a personal aircraft with ducted rotors in accordance with one embodiment.
- FIG. 6 illustrates a view of a personal aircraft with ducted rotors in accordance with an alternative embodiment.
- FIG. 7 illustrates a view of a personal aircraft with folded wings in accordance with one embodiment.
- FIG. 1 illustrates a personal aircraft 100 in accordance with one embodiment.
- Aircraft 100 includes vertical lift rotors 101; forward flight propellers 103; a forward wing 104; a rear wing 105 having winglets 106; protective shroud 102 (also known as a fence); and a fuselage 107.
- Fuselage 107 also includes landing gear and power source (not shown).
- Fig. 2 illustrates a second view of personal aircraft 100, including port-side main landing gear and nose landing gear 205.
- Fig. 3 illustrates a front view of personal aircraft 100, in which port landing gear, starboard landing gear and nose gear 205 are visible.
- Fig. 4 illustrates a view of the left (port) side of aircraft 100 in accordance with one embodiment.
- aircraft 100 is sized to accommodate a single pilot and personal cargo.
- the length of the aircraft from nose to its aft-most surface is between 15 and 20 feet, and its wingspan is between 15 and 20 feet.
- the aircraft may be longer or shorter, wider or narrower, as will be appreciated by those of skill in the art, without departing from the principles described here.
- Aircraft 100 is constructed in various embodiments primarily of a composite material.
- Fuselage 107 and wings 104, 105 are made from carbon fiber composite material.
- the wings may have metal fittings and ribs attached to the inside and outside of a carbon fiber composite wing skin.
- the wing skins may comprise composite materials made of carbon fiber combined with other composite materials such as Kevlar.
- the fuselage may comprise a metal truss made from material such as but not limited to steel or aluminum with a composite skin that covers the truss.
- the composite fuselage skin in this embodiment may be made of carbon fiber, Kevlar, or other composite materials as understood by those of skill in the art.
- the cockpit windows in one embodiment are polycarbonate, though other lightweight clear plastics may also be used.
- fences 110 are made from a Kevlar and carbon fiber composite. In alternative embodiments, they are made only from carbon fiber or only from Kevlar or similar fibers.
- Rotors 101 in one embodiment have a 16 inch radius, and are made from carbon fiber composite material, and in an alternative embodiment from carbon fiber composite blades attached to an aluminum hub.
- rotors are made from wood blades attached to an aluminum hub, or wood blades attached to a carbon fiber composite hub. The rotors may be a single piece that bolts onto the motor assembly.
- Aircraft 100 includes a forward wing 104 and an aft wing 105.
- the aft wing is swept back and has winglets 106 at its ends.
- the winglets provide lateral stability and decrease the drag due to lift on the aft wing. Sweeping the wing back improves the pitch stability of the aircraft and increases the benefits of the winglets on lateral stability.
- the aft wing can fold, and thus maintain the same overall vehicle length as an aircraft with an unswept aft wing. Additionally, the sweep of the aft wing provides more space for the rotors to fit into.
- Forward wing 104 is also attached to fuselage 107 at a point substantially lower than is aft wing 105 in various embodiments.
- a non-planar wing lifting system enables the wings to develop efficient lift during cruise flight.
- the vertical separation between the two wings is chosen to be as large as possible, given the constraint of attaching to the fuselage.
- the drag due to lift of the vehicle is significantly decreased, for example by 15-20% compared to a single in-plane wing lifting system.
- the winglets 106 are located at the tip of rear wing 105 to provide decreased drag due to lift on the rear wing, as well as yaw or directional stability and control.
- the particular winglet shape is established for adequate stability, as will be understood by those skilled in the art.
- the winglets extend downward and provide improved controllability by reducing the coupling between the sideslip angle of the aircraft and the yawing moment that the airflow produces on the aircraft.
- the winglets 106 extend upwards.
- the tandem wing system has joints where the wingtips on each wing fold, allowing aircraft 100 to fit in a constrained space.
- folding the wings enables the aircraft 100 to be stored an 8' by 7' by 16' space, or the space provided by a typical single car garage.
- the rear wing 105 has a dihedral angle of 8.4 degrees. In other embodiments the dihedral ranges between -10 and 10 degrees.
- Vertical lift rotor assemblies 101 are mounted on each side of aircraft 100.
- a propulsion boom 114 is secured to each side of the fuselage 107.
- Vertical lift rotor assemblies 101 are installed on top of the booms 114.
- Propulsion booms 114 are attached to the fuselage 107 with struts 116.
- the struts 116 are positioned so that the downwash from the rotors does not impinge on the struts.
- struts may be swept forward, aft, up, or down to improve the attachment of the booms to the fuselage.
- a vertically oriented support structure provides increased bending stiffness from the vertical lift rotor loads during hover.
- Each vertical lift rotor assembly 101 includes a rotor and a motor.
- the rotor may comprise blades attached to a hub, or may be manufactured as a single piece with an integral hub.
- the hub provides a central structure to which the blades connect, and in some
- the motor includes a rotating part and a stationary part.
- the rotating part is concentric to the stationary part, known as a radial flux motor.
- the stationary part may form the outer ring of the motor, known as an inrunner motor, or the stationary part may form the inner ring of the motor, known as an outrunner motor.
- the rotating and stationary parts are flat and arranged in opposition to each other, known as an axial flux motor.
- the rotor is attached to the rotating part of the motor.
- the stationary part of the motor is attached to the propulsion boom 114.
- the motor is a permanent magnet motor and is controlled by an electronic motor controller.
- aircraft 100 includes multiple rotor assemblies 101 per side.
- the vertical lift rotors are configured to generate thrust that is independent of the thrust generated by the forward flight propellers 103 during horizontal cruise.
- the vertical lift rotors provide enough thrust to lift the aircraft off the ground and maintain control.
- each rotor generates more, e.g., 40% more, thrust than is needed to hover, to maintain control in all portions of the flight envelope.
- the rotors are optimized by selecting the diameter, blade chord, and blade incidence distributions to provide the needed thrust with minimum consumed power at hover and low speed flight conditions.
- half of the rotors rotate in one direction, and the other half rotate in the opposite direction to balance the reaction torque on aircraft.
- four vertical lift rotor assemblies 101 per side are shown.
- more or fewer vertical lift rotors provide the vertical lift and control.
- the ability to produce a vertical force with equilibrium about the center of gravity is retained even when one rotor fails. This is achieved by decreasing the thrust on the opposite quadrant to the failed rotor.
- control about all three axes, or directions of flight is available.
- the loss of any one rotor results in a decreasing overall loss of vertical thrust.
- each extra pair of rotors there is increasing complexity and probability that a failure would result, as well as increased cost and weight.
- two vertical lift rotor assemblies 101 per side are located in front of the CG and two are located behind the CG. In this manner, the center of lift of the rotors in hover is co-located with the center of gravity of the aircraft 100.
- This arrangement permits a variation of longitudinal or lateral positioning of the payload in the fuselage 107 because each independent vertical lift rotor is able to modify its thrust to provide a balanced vertical lift or, alternatively, unbalanced lift to provide control.
- Forward flight propellers 103 provide the thrust for transition to forward flight, climb, descent, and cruise.
- two or more forward thrust propellers 103 are mounted along the span of the rear wing 105.
- a single forward thrust propeller is mounted on the aft portion of the fuselage 107 at the center of the span.
- the propellers can be rotated in opposite directions so that the torque required to turn them does not produce a net torque on the airplane.
- the thrust of the two propellers can be varied differentially to provide a yaw control moment. Positioning on the wing results in less inflow disturbance to the propellers.
- a single propeller on the fuselage permits fewer components and less weight, but with a different-sized motor and with the inflow including disturbances from the fuselage.
- a single propeller is used in a hybrid-electric system having a small hyrdrocarbon-based fuel engine to provide power in forward flight and/or to recharge the battery system.
- the fuselage 107 provides payload volume near the vehicle center of gravity as well as the attachment structure for the vertical lift rotors 101, forward wing 104, and the rear wing 105.
- Forward flight propellers 103 are also attached to the aft portion of the fuselage.
- Other embodiments have a protective shroud or the ducts attached to the fuselage in a fashion to provide the least interference with the rotor airflow, while resisting bending loads.
- the vertical lift rotors and the forward propellers are driven by electric motors that are powered by a power system.
- the power system includes a battery that is attached to one motor controller for each motor.
- the battery provides a DC voltage and current that the motor controllers turn into the AC signals that make the motors spin in response to control input from the flight computer or other source.
- the rotors and propellers are powered by a power system that includes a hybrid-electric system with a small hydrocarbon-based fuel engine and a smaller battery.
- the hydrocarbon engine provides extended range in forward flight and can recharge the battery system.
- the vertical lift rotor assemblies 101 in various embodiments are protected by either ducts or protective shrouds 102 to avoid accidental blade strikes.
- the rotor blades are completely and tightly surrounded by a duct 502that also provides incremental lift. This additional lift is generated by suction forces on the duct surface, due to the increased velocity of the air in front of the rotors.
- the rotor is loosely surrounded by only a protective shroud 102 or fence.
- the ducts have embodiments either with or without duct covers 601 that seal the ducts from airflow during cruise flight to decrease the vehicle drag.
- the vertical lift rotors 101 generate thrust that is independent from the thrust generated by the forward flight rotors 103 during horizontal cruise. In some embodiments this permits fixed pitch to be used for both the rotors and propellers. This independence of thrust generation as opposed to having the same rotors generating both the vertical and horizontal thrust, permits the rotors 101 to be optimized for zero-airspeed flight performance and low noise, without the need for a variable pitch mechanism.
- the rotors are optimized by designing for a single pitch blade setting at the hover and low speed flight conditions.
- the forward flight propellers 103 are optimized for cruise airspeed flight performance, also without the need for a variable pitch mechanism. These blades are designed with the optimum pitch, twist, taper, and rpm for cruise operation. Since the rotor and propellers are completely separate, they are able to have different characteristics, such as tip speed, rpm, and diameter so that they are optimal at their specific operating conditions. This decreases the mechanical complexity of the propulsion system.
- the use of multiple independently controlled rotors provides a redundant lift system.
- a system that includes six or more rotors permits hover and vertical ascent with safe operation without forward airspeed, even if one or several individual components fail.
- the vertical lift rotors 101 are arranged longitudinally along the aircraft direction of travel in-line to reduce the cruise drag.
- Other embodiments have the rotors offset in other ways, either to align with the body airflow, or to provide a more compact footprint.
- One embodiment has an in-line arrangement with a horizontally oriented support structure that attaches to the fuselage 107.
- wing 104 and 105 fold in some embodiments. Some embodiments have a wing fold that is positioned at a location where the loads are small, outboard of 50% of the span, for example, to permit a lighter weight hinge. In other embodiments, the forward wing does not fold. In other embodiments, the wings fold so the aircraft can fit into an 8' wide space, such as a typical single car garage. Alternative embodiments also include folding the forward wing in other ways, such as in a scissor motion underneath the fuselage or along the side of the fuselage. This scissor folding is accomplished through pivot and pin at the center of the front wing that permits a rotation backwards about that center pivot point.
- the landing gear includes a single front wheel with two main rear landing gear wheels.
- the rear wing 105 also provides a portion of the aircraft lift during forward flight.
- the rear wing fold 302 permits the rear wing structure to articulate downward to permit ground operation or storage in a more compact footprint. Folding downward permits the winglet 303 to fit into the small door opening or parking storage space, both in terms of the vehicle width and height.
- the rear wing does not fold.
- Alternative embodiments also include folding the rear wing in other ways, such as upward and on top of the rear wing if longer spans are desired and not capable of folding while clearing the ground.
- aircraft 100 is capable of taking off and landing with the front and rear wings folded. Taking off and landing with the wings folded in vertical flight decreases the gust response of the vehicle due to unsteady wind conditions through decreased wing lift performance and shorter wing spans. Since the wing lift is not required in hover flight, but only in forward flight, is it possible to wait to unfold the wings until sufficient altitude is achieved away from ground. Avoiding ground wing unfolding is advantageous for some operations where the ground takeoff and landing space available and wind conditions are not favorable.
- An electromechanical actuator provides the actuation force to unfold the wing before commencing forward flight.
- control surfaces are located on the inner portion of the front wing fold 301 and rear wing fold 302 to permit folding without control lines required outboard of the folding hinge mechanism to provide less mechanical complexity through fewer moving parts.
- the control surfaces provide pitch, roll, and yaw control during forward flight aerodynamically so that the vertical lift rotors are not required for control except at low or zero forward speed.
- Other embodiments that require greater forward flight control responsiveness also have control surfaces outboard of the wing fold mechanism.
- Other embodiments only have control surfaces on the outboard section of the wing.
- Landing gear 205 is provided with wheels to permit the aircraft to move while on the ground.
- One forward 204 and two rear 202 main landing gear provide lower drag and less lift interference on the front wing.
- the landing gear is a skid and has no wheels, since the aircraft is capable of takeoff and landing without forward movement.
- Alternative embodiments include two forward and one rear main landing gear to permit the front landing gear to be widely separated for ground stability.
- some or all of the wheels are fitted with electric motors that allow the wheels to be driven. Such motors allow the vehicle to be self-propelled while on the ground.
- aircraft 100 is designed to accommodate two or more occupants.
- the wingspan is larger, the rotors have a larger diameter, and the fuselage 107 is wider.
- aircraft 100 is an unmanned vehicle that is capable of flight without a pilot or passengers.
- Embodiments without passengers have additional control systems that provide directional control inputs in place of a pilot, either through a ground link or through a predetermined flight path trajectory.
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Abstract
Description
Claims
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137004144A KR20130026506A (en) | 2010-07-19 | 2011-07-19 | Personal aircraft |
AU2011282250A AU2011282250B2 (en) | 2010-07-19 | 2011-07-19 | Personal aircraft |
EP11810313.4A EP2595882B1 (en) | 2010-07-19 | 2011-07-19 | Personal aircraft |
KR1020137029347A KR20130126756A (en) | 2010-07-19 | 2011-07-19 | Personal aircraft |
BR112013001425A BR112013001425A2 (en) | 2010-07-19 | 2011-07-19 | aircraft and method to fly an aircraft and vtol |
CA2801651A CA2801651C (en) | 2010-07-19 | 2011-07-19 | Personal aircraft |
NZ607121A NZ607121A (en) | 2010-07-19 | 2011-07-19 | Personal aircraft |
CN201180042776.4A CN103079955B (en) | 2010-07-19 | 2011-07-19 | Private airplane |
JP2013520824A JP5421503B2 (en) | 2010-07-19 | 2011-07-19 | Private aircraft |
US13/229,717 US8393564B2 (en) | 2010-07-19 | 2011-09-10 | Personal aircraft |
IL224219A IL224219A (en) | 2010-07-19 | 2013-01-14 | Personal aircraft |
US13/764,697 US9845150B2 (en) | 2010-07-19 | 2013-02-11 | Personal aircraft |
US15/811,510 US20180065737A1 (en) | 2010-07-19 | 2017-11-13 | Personal aircraft |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36576110P | 2010-07-19 | 2010-07-19 | |
US61/365,761 | 2010-07-19 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/229,717 Continuation US8393564B2 (en) | 2010-07-19 | 2011-09-10 | Personal aircraft |
US13/229,717 Continuation-In-Part US8393564B2 (en) | 2010-07-19 | 2011-09-10 | Personal aircraft |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2012012474A2 true WO2012012474A2 (en) | 2012-01-26 |
WO2012012474A3 WO2012012474A3 (en) | 2012-04-26 |
Family
ID=45497427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2011/044591 WO2012012474A2 (en) | 2010-07-19 | 2011-07-19 | Personal aircraft |
Country Status (10)
Country | Link |
---|---|
US (3) | US8393564B2 (en) |
EP (1) | EP2595882B1 (en) |
JP (1) | JP5421503B2 (en) |
KR (2) | KR20130026506A (en) |
CN (1) | CN103079955B (en) |
BR (1) | BR112013001425A2 (en) |
CA (1) | CA2801651C (en) |
IL (1) | IL224219A (en) |
NZ (1) | NZ607121A (en) |
WO (1) | WO2012012474A2 (en) |
Cited By (7)
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- 2011-07-19 KR KR1020137029347A patent/KR20130126756A/en not_active Application Discontinuation
- 2011-07-19 CA CA2801651A patent/CA2801651C/en not_active Expired - Fee Related
- 2011-07-19 JP JP2013520824A patent/JP5421503B2/en not_active Expired - Fee Related
- 2011-07-19 EP EP11810313.4A patent/EP2595882B1/en not_active Not-in-force
- 2011-07-19 CN CN201180042776.4A patent/CN103079955B/en not_active Expired - Fee Related
- 2011-07-19 BR BR112013001425A patent/BR112013001425A2/en not_active IP Right Cessation
- 2011-07-19 WO PCT/US2011/044591 patent/WO2012012474A2/en active Application Filing
- 2011-09-10 US US13/229,717 patent/US8393564B2/en active Active
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2013
- 2013-01-14 IL IL224219A patent/IL224219A/en active IP Right Grant
- 2013-02-11 US US13/764,697 patent/US9845150B2/en active Active
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2017
- 2017-11-13 US US15/811,510 patent/US20180065737A1/en not_active Abandoned
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US10974838B2 (en) | 2011-07-19 | 2021-04-13 | Wisk Aero Llc | Personal aircraft |
US11939071B2 (en) | 2011-07-19 | 2024-03-26 | Wisk Aero Llc | Personal aircraft |
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US10640204B2 (en) | 2015-03-03 | 2020-05-05 | Amazon Technologies, Inc. | Unmanned aerial vehicle with a tri-wing configuration |
CN104648653A (en) * | 2015-03-10 | 2015-05-27 | 朱幕松 | Four-rotor-wing vertical lifting and quick flying electric unmanned aerial vehicle |
EP3592645A4 (en) * | 2017-03-07 | 2020-12-16 | Colugo Systems Ltd | Folded wing multi rotor |
EP3628593A1 (en) | 2018-09-28 | 2020-04-01 | Airbus Helicopters | Multirotor aircraft with hybrid or electric engine with optimised energy consumption |
FR3086641A1 (en) | 2018-09-28 | 2020-04-03 | Airbus Helicopters | MULTIROTOR AIRCRAFT WITH ELECTRIC OR HYBRID MOTORIZATION WITH OPTIMIZED ENERGY CONSUMPTION |
US11066161B2 (en) | 2018-09-28 | 2021-07-20 | Airbus Helicopters | Electrically or hybrid powered multirotor aircraft with optimized energy consumption |
RU216772U1 (en) * | 2022-11-15 | 2023-02-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева - КАИ" | VTOL unmanned aerial vehicle |
Also Published As
Publication number | Publication date |
---|---|
US8393564B2 (en) | 2013-03-12 |
NZ607121A (en) | 2015-02-27 |
WO2012012474A3 (en) | 2012-04-26 |
EP2595882A2 (en) | 2013-05-29 |
US20120012692A1 (en) | 2012-01-19 |
JP5421503B2 (en) | 2014-02-19 |
IL224219A (en) | 2016-06-30 |
CN103079955B (en) | 2016-03-30 |
CA2801651A1 (en) | 2012-01-26 |
EP2595882A4 (en) | 2013-11-13 |
US20180065737A1 (en) | 2018-03-08 |
KR20130126756A (en) | 2013-11-20 |
BR112013001425A2 (en) | 2016-05-31 |
KR20130026506A (en) | 2013-03-13 |
CA2801651C (en) | 2015-11-10 |
US9845150B2 (en) | 2017-12-19 |
JP2013532601A (en) | 2013-08-19 |
EP2595882B1 (en) | 2016-06-08 |
AU2011282250A1 (en) | 2013-01-31 |
CN103079955A (en) | 2013-05-01 |
US20130214086A1 (en) | 2013-08-22 |
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