IP Library Granted Patent US 10,308,358
Granted Patent B2
US 10,308,358 · App. 15/593,535 · Granted Jun 4, 2019

Passenger carrying unmanned aerial vehicle powered by a hybrid generator system

Inventors: Long N. Phan (Somerville, MA); Samir Nayfeh (Shrewsbury, MA); Eli M. Davis (Cambridge, MA)
Assignee: Top Flight Technologies, Inc.
B64C39/024B64C39/022B64C39/026B64D27/24B64C2201/027B64C2201/042B64C2201/066B64C2201/141B64C2201/146B64C2201/18B64D2027/026Y10T464/10
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Quick Facts
Patent No.
US 10,308,358
App. No.
15/593,535
Granted
Jun 4, 2019
Kind
B2
Abstract

An unmanned aerial vehicle includes at least one rotor motor configured to drive at least one propeller to rotate; a passenger compartment sized to contain a human or animal passenger; and a hybrid generator system configured to provide power to the at least one rotor motor and to generate lift sufficient to carry the human or animal passenger. The hybrid generator system includes a rechargeable battery configured to provide power to the at least one rotor motor; an engine configured to generate mechanical power; and a generator motor coupled to the engine and configured to generate electrical power from the mechanical power generated by the engine.

Claims (49)

1. An unmanned aerial vehicle comprising:

at least one rotor motor configured to drive at least one propeller to rotate;

a passenger compartment sized to contain a human or animal passenger, the at least one propeller configured to generate lift sufficient to carry the human or animal passenger; and

a hybrid generator system configured to provide electrical energy to the at least one rotor motor, the hybrid generator system comprising:

a rechargeable battery configured to provide electrical energy to the at least one rotor motor;

an engine configured to generate mechanical energy;

a generator motor configured to generate electrical energy from the mechanical power generated by the engine; and

a coupling device directly coupling a rotor of the engine to the generator motor, the coupling device including a flexible coupling incorporating a cooling device.

2. The unmanned aerial vehicle of claim 1 , wherein the electrical energy generated by the generator motor is provided to at least one of the rotor motor and the rechargeable battery.

3. The unmanned aerial vehicle of claim 1 , comprising a climate control system configured to control one or more of a temperature, a humidity, and an oxygen content within the passenger compartment.

4. The unmanned aerial vehicle of claim 3 , in which the climate control system receives electrical energy from one or more of the generator motor and the rechargeable battery.

5. The unmanned aerial vehicle of claim 1 , comprising a control system configured to enable the passenger to cause the unmanned aerial vehicle to land.

6. The unmanned aerial vehicle of claim 5 , in which the control system is configured to receive information indicative of a destination from the passenger.

7. The unmanned aerial vehicle of claim 5 , in which the control system is configured to receive operating instructions from a remote control center.

8. The unmanned aerial vehicle of claim 1 , wherein the passenger sized compartment is positioned on a top side of a frame of the unmanned aerial vehicle.

9. The unmanned aerial vehicle of claim 1 , wherein the passenger sized compartment is positioned on a bottom side of a frame of the unmanned aerial vehicle.

10. The unmanned aerial vehicle of claim 1 , wherein the passenger sized compartment is sized to contain a single human passenger.

11. The unmanned aerial vehicle of claim 1 , in which the rechargeable battery is sized to provide at least a minimum amount of electrical energy.

12. The unmanned aerial vehicle of claim 1 , comprising a weather sensor configured to detect weather conditions.

13. The unmanned aerial vehicle of claim 12 , comprising a control system configured to automatically modify a flight plan based on data detected by the weather sensor.

14. The unmanned aerial vehicle of claim 1 , comprising a sensor configured to detect a condition of one or more components of the unmanned aerial vehicle.

15. The unmanned aerial vehicle of claim 14 , comprising a control system configured to automatically modify a flight plan based on data detected by the sensor.

16. The unmanned aerial vehicle of claim 1 , comprising an energy absorbing connector, in which the hybrid power generation system is coupled to a frame of the unmanned aerial vehicle through the energy absorbing connector.

17. The unmanned aerial vehicle of claim 1 , wherein the hybrid energy generation system is configured to generate at least 150 kW of electrical power.

18. The unmanned aerial vehicle of claim 1 , wherein the hybrid energy generation system is configured to generate up to 1 MW of electrical power.

19. The unmanned aerial vehicle of claim 1 , wherein the generator motor is coupled to the engine by a metal plate.

20. The unmanned aerial vehicle of claim 1 , wherein the engine comprises one or more of a two-stroke reciprocating piston engine, a four-stroke reciprocating piston engine, a gas turbine, and a rotary engine.

21. The unmanned aerial vehicle of claim 1 , comprising a cooling system configured to cool the hybrid energy generation system.

22. The unmanned aerial vehicle of claim 1 , wherein the generator motor comprises one or more of a permanent magnet synchronous generator, an induction generator, and a switched reluctance generator.

23. The unmanned aerial vehicle of claim 1 , wherein the cooling device comprises a fan.

24. The unmanned aerial vehicle of claim 1 , the hybrid generator system comprising a control unit configured to control a throttle of one or more of the engine and the generator motor based on a rotational speed of the rotor of the engine.

25. The unmanned aerial vehicle of claim 24 , the hybrid generator system comprising a Hall effect sensor configured to detect a signal based on the rotational speed of the rotor of the engine, wherein the control unit is configured to control the throttle based on the detected signal.

26. The unmanned aerial vehicle of claim 25 , wherein the control unit is configured to control the throttle based on a voltage generated by the Hall effect sensor responsive to detection of the signal.

27. The unmanned aerial vehicle of claim 26 , wherein the control unit is configured to:

compare the voltage generated by the Hall effect sensor to an output of the generator motor; and

control the throttle of the one or more of the engine and the generator based on the comparison.

28. The unmanned aerial vehicle of claim 24 , comprising a data center configured to communicate with another unmanned aerial vehicle, and

wherein the control unit is configured to control the throttle based on an energy demand of the data center.

29. An unmanned aerial vehicle comprising:

a passenger compartment sized to contain a human or animal passenger;

at least one rotor motor configured to drive at least one propeller to rotate, the at least one propeller configured to generate lift sufficient to carry the human or animal passenger;

a data center configured to communicate with another unmanned aerial vehicle; and

a hybrid generator system configured to provide electrical energy to the at least one rotor motor and to the data center, the hybrid generator system comprising:

a rechargeable battery configured to provide electrical energy to the at least one rotor motor;

an engine configured to generate mechanical energy;

a generator motor configured to generate electrical energy from the mechanical power generated by the engine;

a coupling device directly coupling a rotor of the engine to the generator motor, the coupling device including a flexible coupling incorporating a fan;

a Hall effect sensor configured to generate a voltage signal based on a rotational speed of the rotor of the engine; and

a control unit configured to control a throttle of one or more of the engine and the generator motor based on (i) the voltage signal generated by the Hall effect sensor and (ii) an energy demand of the data center.

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded Aug 6, 2026
From: FISH & RICHARDSON P.C.
To: TOP FLIGHT TECHNOLO GIES, INC
Reel/Frame 075544/0419 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 27, 2026
From: ISTARI DIGITAL, INC.
To: PRIMUS VOLATUS LLC
Reel/Frame 075402/0662 →
CHANGE OF NAME Recorded Mar 25, 2024
From: ISTARI, INC.
To: ISTARI DIGITAL, INC.
Reel/Frame 067055/0822 →
PURCHASE AGREEMENT Recorded Aug 30, 2022
From: TOP FLIGHT TECHNOLOGIES, INC.
To: ISTARI, INC.
Reel/Frame 061356/0821 →
LIEN Recorded Jun 1, 2020
From: TOP FLIGHT TECHNOLOGIES, INC.
To: FISH & RICHARDSON P.C.
Reel/Frame 052799/0887 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 10, 2019
From: PHAN, LONG N.; NAYFEH, SAMIR; DAVIS, ELI M.
To: TOP FLIGHT TECHNOLOGIES, INC.
Reel/Frame 048043/0001 →
Continuity (3)
Provisional Application 62339284 · May 20, 2016
Provisional Application 62335938 · May 13, 2016
Related Publication 20180244384A1 · Aug 30, 2018
Cited By (10)
US 1,083,828 US 12,248,740 US 12,259,995 US 12,378,011 US 12,404,053 US 12,445,061 US 12,583,582 US 12,679,574 US 12,703,256 US 12,715,630