Weight-shift flight control transducer and computer controlled flight simulator, hang gliders and ultralight aircraft utilizing the same

• US 5,252,068 A
• Filed: 12/31/1991
• Issued: 10/12/1993
• Est. Priority Date: 12/31/1991
• Status: Expired due to Fees

• Current Assignee: Flight Dynamics Inc (Rtx Corporation)
• Original Assignee: Flight Dynamics Inc (Rtx Corporation)
• Inventors: Gryder, Bradley H.
• Primary Examiner(s): Mancene, Gene
• Assistant Examiner(s): TSO, LAURA K
• Application Number:
  US07/816,650
• Time in Patent Office: 651 Days
• Field of Search: 244/16, 244/900, 244/222, 244/228, 244/234, 244/236, 244/904, 273/148 B, 273/DIG. 28, 434/30
• US Class Current: 434/30
• CPC Class Codes: B64C 31/028 Hang-glider-type aircraft; Microlight-type aircraft
• CPC Class Codes: G09B 9/085 Special purpose teaching, e.g. alighting on water, aerial photography
• CPC Class Codes: G09B 9/206 for in-flight condition
• CPC Class Codes: G09B 9/34 by cathode-ray screen display G09B9/307, G09B9/36 take precedence

Abstract

The weight-shift movements of a suspended pilot are transformed into electrical signals representative of the movements. The signals may be used as the pitch and roll input information in an interactive computerized flight simulation system. The signals may also be generated by an actual pilot of a hang glider or ultralight aircraft and used on board to control ailerons, elevators, rudders, or the like, so as to enhance the performance potentials of these types of aircraft.

Claims

1. In a suspended-pilot environment that includes a mechanical support structure for suspending a pilot so that the pilot is provided with freedom of weight-shift movement of the type used to control a hang glider or ultralight aircraft, a weight-shift flight control transducer associated with said mechanical support structure including means for transforming the weight-shift movements of the suspended pilot into electrical signals representative of the weight-shift movements.

2. A weight-shift flight control transducer as claimed in claim 1 wherein the suspended pilot environment is an actual aircraft including moveable flight control surfaces and means for moving said flight control surfaces in response to the signals generated by said weight-shift flight control transducer.

4. A weight-shift flight control transducer as claimed in claim 1 including means defining a suspended pilot load vector and the axes of a controlled reference system and means for generating electrical signals indicative of the angles formed between the suspended pilot'"'"'s load vector and the axes of the controlled reference system.

5. A weight-shift flight control transducer as claimed in claim 4 including a ball and socket arrangement with the ball thereof having three dimensional rotational freedom of movement.

6. A weight-shift flight control transducer as claimed in claim 5 including means fixedly connecting said ball to the suspended pilot along a line co-linear with the pilot'"'"'s load vector.

7. A weight-shift flight control transducer as claimed in claim 6 including ball followers and associated potentiometers for following the movements of said ball in at least two axes and generating electrical signals indicative of said movements.

8. A weight-shift flight control transducer as claimed in claim 6 including strain gauges and associated strain strips connected for movement with said ball.

3. A weight-shift flight control transducer as claimed in claim wherein said suspended pilot environment is a computerized flight simulation system including a computer, flight simulation software and a video monitor positioned in view of the suspended pilot, and said computerized flight simulation system is operable in response to the signals generated by the weight-shift flight control transducer.

9. A computer system for permitting a trainee in the art of suspended pilot aircraft flight to suspend himself in a suspended pilot harness in a controlled training environment and interact with a computerized flight simulation system so that his actual weight-shift movements cause the computer to recalculate flight parameters and continuously present flight conditions simulating those that would be produced in an actual flight by a pilot'"'"'s weight-shift movements, said system comprising:

a mechanical support for suspending the trainee in a harness with the trainee having freedom of weight-shift movement of the type used to control a hang glider or ultralight aircraft;

a weight-shift flight control transducer associated with said mechanical support for generating electrical signals representative of the weight-shift movements of the trainee; and

a computer system comprising a computer, a video monitor positioned in sight of a suspended pilot trainee and flight simulation software loaded into the computer, said computer system permitting input of the signals representative of the weight-shift movements of the trainee and generating a video image of flight conditions that is continuously recalculated by the computer.

10. A system as claimed in claim 9 wherein said weight-shift flight control transducer includes means defining a suspended pilot load vector and the axes of a fixed controlled reference system and means for generating electrical signals indicative of the angles formed between the suspended pilot'"'"'s load vector and the axes of the controlled reference system.

11. An aircraft flown by a suspended pilot comprising:

wings;

a harness for a suspended pilot;

a mechanical support associated with said wings for suspending said harness and providing the suspended pilot with freedom of weight-shift movement of the type used to control the aircraft;

a weight-shift transducer associated with said mechanical support for generating electrical signals representative of the movements of the suspended pilot;

at least one electromechanical moveable control surface on the aircraft; and

processor control means for receiving the signals from said weight control transducer and controlling the motion of said control surface in response thereto.

12. An aircraft as claimed in claim 11 wherein said aircraft is a hang glider, said weight-shift control transducer produces signals representative of the pitch and roll weight-shift movements of the pilot and the control surfaces that are moveable in response to the signals comprise ailerons and an elevator.

13. An aircraft as claimed in claim 11 wherein said weight-shift flight control transducer includes means defining a suspended pilot load vector and the axes of a controlled reference system and means for generating electrical signals indicative of the angles formed between the suspended pilot'"'"'s load vector and the axes of the controlled reference system.

14. A method of tracking the weight-shift movement of a suspended pilot in an interactive computerized flight simulation system or an actual aircraft such as a hang glider or ultralight aircraft and generating signals representative of the suspended pilot'"'"'s weight-shift movements in at least one of the pitch, roll, yaw axes, said method comprising:

suspending a pilot from a mechanical support structure so as to provide the pilot with a freedom of weight-shift movements of the type used to control a hang glider or ultralight aircraft;

providing moveable means associated with the mechanical support that is moveable in response to the weight-shift movements of the suspended pilot; and

transforming the motion of the moveable means into electrical signals representative of at least one of the pitch, roll, yaw movements of the suspended pilot.

15. The method of claim 14 including the step of feeding the signals to the computer of an interactive computerized flight simulation system.

16. The method of claim 15 including the steps of providing a control bar forward of the pilot for engagement by his hands, permitting the suspended pilot to create pitch signals by pushing away from and pulling toward the control bar and roll signals by pushing his body to the right and left and feeding roll and pitch signals to the interactive computer flight simulation system.

17. The method of claim 16 including the step of programming the interactive computer flight simulation system to recalculate flight parameters and continuously present flight conditions on a video monitor simulating those that would be produced in actual flight by a pilot'"'"'s weight-shift movements.

18. The method of claim 14 wherein the suspended pilot is mechanically supported from the wing structure of an actual aircraft such as a hang glider or ultralight aircraft, and including the step of feeding the signals to an on-board processor and, through said signals, controlling the motion of at least one moveable electromechanical control surface of the aircraft.

19. The method of claim 18 including the step of providing a control bar forward of the pilot for engagement by his hands, permitting the suspended pilot to create pitch signals by pushing away from and pulling toward the control bar and roll signals by pushing his body to the right and left, and feeding roll and pitch signals to the on-board processor.