Hybrid propulsive engine including at least one independently rotatable propeller/fan

• US 20100083669A1
• Filed: 10/08/2008
• Published: 04/08/2010
• Est. Priority Date: 10/08/2008
• Status: Active Grant

• Current Assignee: Enterprise Science Fund, LLC (Intellectual Ventures LLC)
• Original Assignee: Searete LLC (Intellectual Ventures LLC)
• Inventors: Ishikawa, Muriel Y., Myhrvold, Nathan P., Tegreene, Clarence T., Jung, Edward K.Y., Wood, Lowell L. JR., Hyde, Roderick A., Weaver, Thomas Allan, Kare, Jordin T., Wood, Victoria Y.H., Foster, Glenn B.
• Granted Patent: US 8,099,944 B2
• Time in Patent Office: Days
• US Class Current: 60/802
• CPC Class Codes: B64D 2027/026 comprising different types of power plants, e.g. combination of an electric motor and a gas-turbines
• CPC Class Codes: B64D 27/026 comprising different types of power plants, e.g. combination of a piston engine and a gas-turbine Hybrid electric aircraft B64D27/33
• CPC Class Codes: B64D 27/16 of jet type
• CPC Class Codes: B64D 27/24 using steam or spring force jet aircraft B64D27/16
• CPC Class Codes: B64D 31/04 actuated personally
• CPC Class Codes: B64D 31/06 actuated automatically
• CPC Class Codes: B64D 33/00 Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
• CPC Class Codes: F01D 15/10 Adaptations for driving, or combinations with, electric generators
• CPC Class Codes: F01D 5/03 Annular blade-carrying members having blades on the inner periphery of the annulus and extending inwardly radially, i.e. inverted rotors
• CPC Class Codes: F01K 23/10 with exhaust fluid of one cycle heating the fluid in another cycle F01K17/025 takes precedence
• CPC Class Codes: F02C 6/00 Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
• CPC Class Codes: F02C 6/08 the gas being bled from the gas-turbine compressor
• CPC Class Codes: F02C 6/14 Gas-turbine plants having means for storing energy, e.g. for meeting peak loads
• CPC Class Codes: F02C 6/18 using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants using waste heat as source of energy for refrigeration plants F25B27/02; using the waste heat of a gasturbine for steam generation or in a steam cycle see F01K23/10
• CPC Class Codes: F02C 6/206 the vehicles being airscrew driven
• CPC Class Codes: F02C 7/36 Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user F02C3/107 - F02C3/13 and F02C7/32 take precedence; couplings for transmitting rotation F16D; gearing in general F16H
• CPC Class Codes: F02K 3/00 Plants including a gas turbine driving a compressor or a ducted fan
• CPC Class Codes: F02K 3/025 the by-pass flow being at least partly used to create an independent thrust component
• CPC Class Codes: F02K 3/077 the plant being of the multiple flow type, i.e. having three or more flows
• CPC Class Codes: F05D 2220/324 to drive unshrouded, low solidity propeller
• CPC Class Codes: F05D 2220/325 : to drive unshrouded, high solidity propeller
• CPC Class Codes: F05D 2220/326 : to drive shrouded, low solidity propeller
• CPC Class Codes: F05D 2220/327 : to drive shrouded, high solidity propeller
• CPC Class Codes: F05D 2220/76 : an electrical generator
• CPC Class Codes: F05D 2260/408 : through magnetohydrodynamic conversion
• CPC Class Codes: F05D 2260/85 : Starting
• CPC Class Codes: Y02T 50/40 : Weight reduction
• CPC Class Codes: Y02T 50/60 : Efficient propulsion technologies, e.g. for aircraft

Abstract

One aspect relates to a hybrid propulsive technique comprising providing at least some first thrust associated with a flow of a working fluid through at least a portion of an at least one axial flow jet engine. The hybrid propulsive technique comprises extracting energy from the working fluid that is at least partially converted into electrical power, and converting at least a portion of the electrical power to torque. The hybrid propulsive technique further comprises rotating an at least one independently rotatable propeller/fan of at least one rotatable propeller/fan assembly at least partially responsive to the converting the at least a portion of the electrical power to torque, wherein the rotating of the at least one independently rotatable propeller/fan of the at least one rotatable propeller/fan assembly is arranged to produce at least some second thrust.

Claims

1. A hybrid propulsive engine, comprising:

an at least one axial-flow jet engine configured to provide at least some first thrust associated with a working fluid passing through at least a portion of the at least one axial-flow jet engine;

an at least one energy extraction mechanism configured to extract energy from the working fluid, and at least partially convert that energy to electrical power;

an at least one torque conversion mechanism configured to convert at least a portion of the electrical power to torque; and

an at least one rotatable propeller/fan assembly including an at least one independently rotatable propeller/fan, the at least one rotatable propeller/fan assembly configured to be powered for rotation at least partially responsive to the at least one torque conversion mechanism configured to convert the at least a portion of the electrical power to torque, wherein the rotation of the at least one rotatable propeller/fan assembly is arranged to produce at least some second thrust.

2. The hybrid propulsive engine of claim 1, wherein the at least one energy extraction mechanism comprises an at least one electric generator.

3. The hybrid propulsive engine of claim 1, wherein the at least one energy extraction mechanism comprises an at least one turbine rotational element configured to extract energy from motion of the working fluid within the at least one axial-flow jet engine.

4. The hybrid propulsive engine of claim 1, wherein the at least one torque conversion mechanism comprises at least one electric motor.

5. The hybrid propulsive engine of claim 1, wherein the at least one energy extraction mechanism includes at least one electrical energy extraction mechanism configured to extract energy from rotation of an at least one turbine rotational element.

6. The hybrid propulsive engine of claim 1, wherein the at least one rotatable propeller/fan assembly is configured for independently controllable rotation relative to at least one turbine rotational element.

7. The hybrid propulsive engine of claim 1, wherein the at least one energy extraction mechanism includes at least one heat engine configured to extract at least some heat from the working fluid that is at least partially applied to an at least one heat receptive fluid.

8. The hybrid propulsive engine of claim 7, wherein the at least one heat receptive fluid is configured to undergo a phase change.

9. The hybrid propulsive engine of claim 7, wherein the at least one heat receptive fluid is configured to undergo a temperature rise.

10. The hybrid propulsive engine of claim 7, wherein the at least one heat receptive fluid at least partially flows around a closed loop.

11. The hybrid propulsive engine of claim 7, wherein the at least one heat receptive fluid at least partially flows around an open loop.

12. The hybrid propulsive engine of claim 7, wherein the at least one energy extraction mechanism comprises an at least one thermoelectric heat engine configured to extract heat energy from the working fluid.

13. The hybrid propulsive engine of claim 7, wherein the at least one energy extraction mechanism comprises an at least one thermoelectric heat engine configured to extract heat energy from the at least one heat receptive fluid.

14. The hybrid propulsive engine of claim 7, wherein the jet engine further comprises a turbine section wherein turbine section is configured to extract electric power from the at least one heat receptive fluid.

15. The hybrid propulsive engine of claim 7, wherein the at least one energy extraction mechanism further comprises an at least one magnetohydrodynamic device that is configured to extract electric power from the at least one heat receptive fluid.

16. The hybrid propulsive engine of claim 1, further comprising a second torque conversion mechanism configured to generate a second torque, wherein the at least one rotatable propeller/fan assembly is configured to be powered for rotation at least partially responsive to the second torque conversion mechanism configured to generate the second torque in addition to the at least one torque conversion mechanism configured to convert the at least a portion of the electrical power to torque.

17. The hybrid propulsive engine of claim 16, further comprising an at least one turbine rotational element configured to rotate at least partially responsive to the working fluid within the at least one axial-flow jet engine, and wherein the second torque conversion mechanism is configured to generate the second torque responsive to the at least one turbine rotational element configured to rotate.

18. The hybrid propulsive engine of claim 16, further comprising a clutch mechanism configured to adjust a ratio of the torque and the second torque that powers the at least one rotatable propeller/fan assembly for rotation.

19. The hybrid propulsive engine of claim 1, wherein the at least one energy extraction mechanism comprises an at least one magnetohydrodynamic device configured to extract kinetic energy from a flow of the working fluid.

20. The hybrid propulsive engine of claim 1, wherein the at least one axial-flow jet engine includes an at least one turbojet.

21. The hybrid propulsive engine of claim 1, wherein the at least one axial-flow jet engine includes an at least one substantially axial flow jet engine.

22. The hybrid propulsive engine of claim 1, wherein the at least one axial-flow jet engine includes an at least one ramjet jet engine.

23. The hybrid propulsive engine of claim 1, wherein the at least one axial-flow jet engine includes an at least one externally heated jet engine.

24. The hybrid propulsive engine of claim 1, wherein the at least one axial-flow jet engine includes an at least one combustion driven jet engine.

25. The hybrid propulsive engine of claim 1, wherein the at least one rotatable propeller/fan includes an at least one substantially axial-flow rotatable propeller/fan.

26. The hybrid propulsive engine of claim 1, wherein the at least one energy extraction mechanism comprises at least one heat engine configured to extract at least some heat from the working fluid that is at least partially applied to a heat receptive fluid, wherein the at least one energy extraction mechanism comprises a Rankine Cycle energy extraction mechanism configured to extract energy in the form of heat from the working fluid.

27. The hybrid propulsive engine of claim 1, further comprising at least one secondary source of electrical energy configured to supply energy to the at least one torque conversion mechanism.

28. The hybrid propulsive engine of claim 27, wherein the at least one secondary source of electrical energy obtains at least some electricity from at least one primary energy source.

29. The hybrid propulsive engine of claim 27, wherein the at least one secondary source of electrical energy comprises at least one rechargeable energy storage device.

30. The hybrid propulsive engine of claim 29, wherein the at least one rechargeable energy storage device is charged at least partially from the at least one energy extraction mechanism.

31. The hybrid propulsive engine of claim 29, wherein the at least one rechargeable energy storage device is charged at least partially from the at least one torque conversion mechanism configured to convert the at least the portion of the electric power to torque.

32. The hybrid propulsive engine of claim 29, wherein the at least one rechargeable energy storage device is at least partially charged from an at least one external power source.

33. The hybrid propulsive engine of claim 1, further comprising a hybrid propulsive engine starter configured to rotate at least a portion of the at least one rotatable propeller/fan assembly at a sufficient rotational velocity to enhance starting the hybrid propulsive engine.

34. The hybrid propulsive engine of claim 1, further comprising a hybrid propulsive engine starter configured to rotate at least a portion of an at least one rotatable compressor element at a sufficient rotational velocity to enhance starting the hybrid propulsive engine.

35. The hybrid propulsive engine of claim 1, wherein the at least one axial-flow jet engine includes a turbine section including an at least one turbine rotational element, wherein the at least one turbine rotational element is arranged, upon receiving at least some of the working fluid passing through the at least the portion of the at least one jet engine, to responsively provide a turbine rotary motion.

36. The hybrid propulsive engine of claim 1, wherein the at least one axial-flow jet engine configured to provide the at least some first thrust produces the at least some first thrust at least partially responsive to the at least one rotatable propeller/fan assembly arranged to produce the at least some second thrust.

37. The hybrid propulsive engine of claim 1, wherein at least some of the working fluid passes through the at least one independently rotatable propeller/fan assembly.

38. The hybrid propulsive engine of claim 1, wherein the at least one axial-flow jet engine further includes a compressor section, and wherein the compressor section includes an at least one compressor rotatable element, and further wherein the at least one compressor rotatable element is configured to compress at least some of the working fluid.

39. The hybrid propulsive engine of claim 1, wherein the at least one rotatable propeller/fan assembly is configured to be powered for a controllable rotation in a first direction or alternately in a second direction that is reversed from the first direction

40. The hybrid propulsive engine of claim 1, wherein the at least one rotatable propeller/fan assembly is configured to be variably powered for a variable speed rotation.

41. The hybrid propulsive engine of claim 1, wherein a rotational axis of the at least one rotatable propeller/fan assembly is configured to be tilted relative to a substantial direction of working fluid passing through at least a portion of the at least one axial-flow jet engine.

42. The hybrid propulsive engine of claim 1, wherein a rotational axis of the at least one rotatable propeller/fan assembly is configured to be variably tilted relative to a substantial direction of working fluid passing through at least a portion of the at least one axial-flow jet engine.

43. The hybrid propulsive engine of claim 1, wherein a rotational axis of the at least one rotatable propeller/fan assembly is configured to be laterally offset relative to the at least one axial-flow jet engine.

44. The hybrid propulsive engine of claim 1, wherein a rotational axis of the at least one rotatable propeller/fan assembly is configured to be variably laterally displaced to be variably offset relative to the at least one axial-flow jet engine.

45. The hybrid propulsive engine of claim 1 that is configured as a turbofan, wherein the at least one rotatable propeller/fan assembly is configured as a shrouded fan.

46. The hybrid propulsive engine of claim 1 that is configured as a turboprop, wherein the at least one rotatable propeller/fan assembly is configured as an unshrouded propeller.

47. The hybrid propulsive engine of claim 1, wherein the at least one rotatable propeller/fan assembly includes at least one compressive fan.

48. The hybrid propulsive engine of claim 1, wherein the at least one rotatable propeller/fan assembly is configured to rotate sufficiently to direct at least a first portion of fluid towards the at least one axial-flow jet engine, thereby providing at least a portion of the working fluid, while directing at least a second portion of fluid to bypass the at least one axial-flow jet engine.

49. The hybrid propulsive engine of claim 1 that is applied to an aircraft.

50. The hybrid propulsive engine of claim 1 that is applied to a boat or ship.

51. The hybrid propulsive engine of claim 1 that is applied to a hovercraft.

52. The hybrid propulsive engine of claim 1 that is applied to a land vehicle.

53. The hybrid propulsive engine of claim 1, further comprising a control circuit to allow a user to control a suitable rotational velocity of the at least one rotatable propeller/fan assembly based at least partially on a user input indicating a desired flight condition.

54. The hybrid propulsive engine method of claim 53, wherein the control circuit is configured to allow the user to control the suitable rotational velocity of the at least one rotatable propeller/fan assembly based at least partially on at least one sensed flight parameter.

55. The hybrid propulsive engine method of claim 53, wherein the control circuit is configured to allow the user to control the suitable rotational velocity of the at least one rotatable propeller/fan assembly based at least partially on a bypass ratio.

56. The hybrid propulsive engine of claim 1, further comprising a control circuit to allow a user to control a suitable polarity of rotation of the at least one rotatable propeller/fan assembly based at least partially on a user input indicating a desired flight condition.

57-95. -95. (canceled)