Systems and methods for ground-based aircraft thrust systems are provided. In particular, some embodiments use an electromechanical thrust assembly to accelerate aircraft using ground-based energy for takeoff. The assembly can include one or more sleds, one or more maglev tracks, and/or one or more
Systems and methods for ground-based aircraft thrust systems are provided. In particular, some embodiments use an electromechanical thrust assembly to accelerate aircraft using ground-based energy for takeoff. The assembly can include one or more sleds, one or more maglev tracks, and/or one or more linear motors. Airplanes are loaded onto a sled (e.g., a saddle-shaped sled) that supports and balances the airplane instead of the landing gear aboard the aircraft. The sled levitates above the ground using high-density permanent magnet arrays. Magnetic levitation forces are varied along the assembly to account for lift provided by airflow over the wings. An aircraft thrust system includes a magnetically levitated saddle-shaped sled with airbags that support an aircraft during takeoff acceleration coupled with a linear motor that spans the length of the distance needed for takeoff.
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1. A takeoff control system comprising: a sled designed to directly support at least wings and a fuselage of an aircraft loaded from a staging area;a guideway adapted to receive the sled enabling the sled to move along at least a straight launch path of the guideway for assisted takeoff of the aircr
1. A takeoff control system comprising: a sled designed to directly support at least wings and a fuselage of an aircraft loaded from a staging area;a guideway adapted to receive the sled enabling the sled to move along at least a straight launch path of the guideway for assisted takeoff of the aircraft;a first series of magnets configured to create magnetic forces in a sequence to propel the sled along the guideway independent of thrust provided by the aircraft,a second series of magnets configured to create magnetic levitation forces, wherein the magnetic levitation forces decrease nonlinearly with respect to position in the guideway as the aircraft is lifted from the sled by airflow; andan energy storage means to power the first series of magnets and the second series of magnets. 2. The system of claim 1, further comprising a transfer beam to transfer the aircraft to the sled. 3. The system of claim 2, wherein the transfer beam uses compressed air or rollers to transfer the aircraft to the sled. 4. The system of claim 1, wherein the guideway includes a launch path on which the aircraft is accelerated by the series of magnets for takeoff. 5. The system of claim 1, wherein the guideway include a return path, separate and parallel from the straight launch path, that returns the sled to the staging area after the aircraft has departed. 6. The system of claim 1, wherein the guideway includes a bi-directional topology. 7. The system of claim 1, wherein the guideway includes a perpendicular topology. 8. A method comprising: navigating an aircraft to a staging area;transferring, in the staging area, an aircraft to a sled coupled to a guideway configured to accelerate the sled using ground-based energy, wherein transferring includes computing a center of gravity of the aircraft utilizing one or more load cells in the staging area and positioning the sled underneath the center of gravity to directly support wings and a fuselage of the aircraft;expanding the sled to grip the aircraft and prevent the aircraft from sliding and rotating about the center of mass of the aircraft; andactivating a first series of magnets within the guideway to accelerate the sled along the guideway,activating a second series of magnets within the guideway to levitate the sled upon the guideway, wherein magnetic forces created by activating the second series of magnets decrease nonlinearly along the guideway as the aircraft is lifted from the sled during takeoff. 9. The method of claim 8, further comprising using a set of sensors to measure a weight of the aircraft, a current air temperature, a distance to an end of the guideway, and a pressure the aircraft is placing on the sled. 10. The method of claim 8, wherein the guideway is one of multiple guideways in a perpendicular topology or a bi-directional topology. 11. The method of claim 10, further comprising selecting one of the multiple guideways. 12. The method of claim 8, further comprising activating engines of the aircraft at full throttle during takeoff. 13. The method of claim 8, further comprising increasing thrust of an engine of the aircraft with altitude to maintain constant climb and minimum ground noise. 14. An aircraft launch system comprising: a means for supporting an aircraft by gripping the aircraft from underneath the aircraft without a mechanical linkage to the aircraft;a guideway coupled to the means for supporting the aircraft and configured to automatically accelerate an aircraft along a takeoff path and return the means for supporting the aircraft along a return path; anda staging area including a transfer means for transferring the aircraft to means for supporting the aircraft. 15. The aircraft launch system of claim 14, wherein the guideway includes permanent magnets and electromagnets to create a magnetic field moving the means for supporting the aircraft along the guideway. 16. The aircraft launch system of claim 14, wherein the guideway includes one or more linear motors. 17. The aircraft launch system of claim 14, wherein the means for supporting the aircraft includes one or more adjustable airbags. 18. The aircraft launch system of claim 14, further comprising a means for measuring an amount of pressure the aircraft is placing on the means for supporting the aircraft. 19. The aircraft launch system of claim 14, further comprising a means for determining a center of gravity of the aircraft. 20. The aircraft launch system of claim 14, wherein the guideway includes a flywheel to discharge energy to generate magnetic forces for accelerating the means for supporting the aircraft. 21. The aircraft launch system of claim 14, wherein the guideway includes a means of storing energy.
Giuliani Robert L. (1456 Thurston Ave. A-1204 Honolulu HI 96822) Giuliani Mark A. (45-310 Akimala Pl. Kaneohe HI 96744) Giuliani Karen A. (45-310 Akimala Pl. Kaneohe HI 96744), Launch and ascent system.
Roeseler,Cory; von Flotow,Andreas H., Methods and apparatuses for launching unmanned aircraft, including methods and apparatuses for launching aircraft with a wedge action.
Dennis,Brian D.; von Flotow,Andreas H., Methods and apparatuses for launching unmanned aircraft, including methods and apparatuses for transmitting forces to the aircraft during launch.
McGeer,Brian T.; von Flotow,Andreas H.; Roeseler,Cory, Methods and apparatuses for launching unmanned aircraft, including releasably gripping aircraft during launch and braking subsequent grip motion.
McGeer,Brian T., Methods and apparatuses for launching, capturing, and storing unmanned aircraft, including a container having a guide structure for aircraft components.
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