Flight control test simulator system and method

Patent metadata

Field	Value
Publication number	US-9454911-B2
Application number	US-201414447582-A
Country	US
Kind code	B2
Filing date	Jul 30, 2014
Priority date	Jul 30, 2014
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

There is provided a flight control test simulator system and method. The system has a flight control assembly with at least one actuator and with a flight controller configured to actuate the at least one actuator. The system further has an aerodynamic load simulator coupled to the flight control assembly and configured to adjustably induce a simulated continuous aerodynamic load on the flight control assembly. The aerodynamic load simulator has a continuously adjustable spring rate constant assembly configured to adjust the spring rate constant of the induced simulated continuous aerodynamic load over a range of predetermined flight profiles.

First claim

What is claimed is:

1. A flight control test simulator system, the system comprising:
a flight control assembly having at least one actuator and having a flight controller configured to actuate the at least one actuator; and
an aerodynamic load simulator coupled to the flight control assembly and configured to adjustably induce a simulated continuous aerodynamic load on the flight control assembly, the aerodynamic load simulator having a continuously adjustable spring rate constant assembly configured to adjust the spring rate constant of the induced simulated continuous aerodynamic load over a range of predetermined flight profiles.

2. The system of claim 1 wherein the flight control assembly further comprises a simulated surface or at least one flight control surface.

3. The system of claim 2 wherein the simulated surface comprises a rotating flywheel or a flight control inertia mass simulator.

4. The system of claim 2 wherein the aerodynamic load simulator comprises an input assembly configured to input a tensile load and a compressive load from the simulated surface to the continuously adjustable spring rate constant assembly.

5. The system of claim 4 wherein the input assembly comprises a first crank element connected to a first tie rod and a load cell, and wherein the first crank element, the first tie rod and the load cell connect the simulated surface via a shaft to a beam spring.

6. The system of claim 5 wherein the input assembly further comprises a second crank element connected to a second tie rod, and wherein the second crank element and the second tie rod connect the simulated surface via the shaft to a test piece.

7. The system of claim 1 wherein the continuously adjustable spring rate constant assembly comprises:
a base member;
a positioning device attached to the base member;
a beam spring having a first fixed end attached to a first end of the base member and having a second non-fixed end, the beam spring positioned over the positioning device;
an adjustable fulcrum assembly coupled to the beam spring and configured to move lengthwise along the positioning device between the first fixed end and the second non-fixed end of the beam spring to create contact between the beam spring and the base member;
a drive mechanism configured to move the adjustable fulcrum assembly lengthwise along the positioning device; and
at least two support elements connected to the base member.

8. The system of claim 7 wherein the positioning device comprises a sliding device that is automated.

9. The system of claim 7 wherein the drive mechanism comprises a screw element attached to the adjustable fulcrum assembly, the screw element being driven by a power supply.

10. The system of claim 7 wherein the beam spring has an adjustable spring rate that is adjustable in real time and under aerodynamic load by an analog input/command signal.

11. An aircraft flight control test simulator system for testing a simulated surface or a flight control surface, the aircraft flight control test simulator system being automated and comprising:
a flight control assembly having at least one actuator, having a flight controller configured to actuate the at least one actuator, and having the simulated surface or the flight control surface; and,
an aerodynamic load simulator coupled to the flight control assembly and configured to adjustably induce a simulated continuous aerodynamic load on the flight control assembly, the aerodynamic load simulator comprising:
a continuously adjustable spring rate constant assembly configured to adjust the spring rate constant of the induced simulated continuous aerodynamic load over a range of predetermined flight profiles; and
an input assembly configured to input a tensile load and a compressive load from the simulated surface or the flight control surface to the continuously adjustable spring rate constant assembly.

12. The system of claim 11 wherein the continuously adjustable spring rate constant assembly comprises:
a base member;
a sliding device that is automated and attached to the base member;
a beam spring having a first fixed end attached to a first end of the base member and having a second non-fixed end, the beam spring positioned over the sliding device;
an adjustable fulcrum assembly coupled to the beam spring and configured to move lengthwise along the sliding device between the first fixed end and the second non-fixed end of the beam spring to create contact between the beam spring and the base member;
a drive mechanism configured to move the adjustable fulcrum assembly lengthwise along the sliding device; and
at least two support elements connected to the base member.

13. The system of claim 12 wherein the adjustable fulcrum assembly is automatically positioned lengthwise along the sliding device between the first fixed end and the second non-fixed end of the beam spring to adjust the spring rate constant in real time.

14. The system of claim 11 wherein the input assembly comprises a first crank element connected to a first tie rod and a load cell, and further comprises a second crank element connected to a second tie rod, and wherein the first crank element connected to the first tie rod and the load cell connect the simulated surface or the flight control surface via a shaft to a beam spring of the continuously adjustable spring rate constant assembly, and further wherein the second crank element and the second tie rod connect the simulated surface or the flight control surface via the shaft to a test piece.

15. A method for testing a simulated surface or a flight control surface, the method comprising the steps of:
determining a flight profile for a flight control test;
coupling a flight control assembly to an aerodynamic load simulator;
operating the flight control assembly over the flight profile;
inducing an aerodynamic load on the flight control assembly while operating the flight control assembly; and,
adjusting a spring rate constant for the aerodynamic load simulator during operation of the flight control assembly.

16. The method of claim 15 wherein the step of coupling the flight control assembly to the aerodynamic load simulator comprises coupling the flight control assembly having at least one actuator and having a flight controller configured to actuate the at least one actuator.

17. The method of claim 15 wherein the step of inducing the aerodynamic load on the flight control assembly comprises adjustably inducing with the aerodynamic load simulator a simulated continuous aerodynamic load on the flight control assembly, and adjusting with a continuously adjustable spring rate constant assembly of the aerodynamic load simulator the spring rate constant of the induced simulated continuous aerodynamic load over a range of predetermined flight profiles.

18. The method of claim 15 wherein the step of inducing the aerodynamic load on the flight control assembly comprises coupling a first crank element, a first tie rod, and a load cell between the simulated surface or the flight control surface and a beam spring of a continuously adjustable spring rate constant assembly of the aerodynamic load simulator, and inducing a simulated continuous aerodynamic load to the beam spring from the simulated surface or the flight control surface via the first crank element, the first tie rod, and the load cell.

19. The method of claim 15 wherein the step of adjusting the spring rate constant for the aerodynamic load simulator comprises coupling an adjustable fulcrum assembly to a

Assignees

• Boeing Co

Inventors

• Finigan John S
• Edgerton James D
• Hughes Gregory J

Classifications

• G01M5/005

  by means of external apparatus, e.g. test benches or portable test systems · CPC title

• G09B9/10 Primary

  with simulated flight- or engine-generated force being applied to aircraft occupant (G09B9/28 takes precedence) · CPC title

• G01N3/14

  generated by dead weight, e.g. pendulum; generated by springs tension (G01N3/18 takes precedence) · CPC title

• G01N2203/04

  Chucks, fixtures, jaws, holders or anvils · CPC title

• G01M5/0016

  of aircraft wings or blades · CPC title