Servo operated anti-G suit pressurization system
First Claim
1. In an aircraft, a system for rapidly pressurizing and controlling pressurization of an aircrewman'"'"'s anti-G suit, of the type, having a plurality of inflatable air bladders, comprising:
- an accelerometer for providing a signal representative of G-forces incident along the vertical axis of the aircraft;
means for switching between two system operating modes, the first operating mode providing a first set of input signals, and the second operating mode providing a second set of input signals different from the first set;
multiple input control means responsive to the G-force signal and the first or second set of input signals for providing a control signal;
a control valve responsive to the control signal and formed to be connected for controlling the volume of air supplied to the anti-G suit; and
means responsive to the air pressure supplied to the anti-G suit and formed to be connected at the outlet of said control valve, for providing a feedback signal connectable through said switching means to said control means.
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Accused Products
Abstract
A servo operated system for controlling pressurization of an aircraft pils anti-G suit during high energy maneuvers has a servo operated control valve and a feedback loop controller for minimizing pressure lag in the suit. The controller has dual modes of operation: one for normal flight conditions and one for combat flight conditions. The normal flight mode provides nominal G-protection while the combat mode provides faster response by prepressurizing the anti-G suit to a bias level and lowering the G-force threshold. While in the combat mode, the crewman may select an adjustable pulsating signal to be superimposed on the prepressurization level to obtain additional comfort. Alternatively, he may select a superimposed pulsating signal which is synchronized with his own heartbeat to reinforce the pumping action of the heart.
26 Citations
11 Claims
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1. In an aircraft, a system for rapidly pressurizing and controlling pressurization of an aircrewman'"'"'s anti-G suit, of the type, having a plurality of inflatable air bladders, comprising:
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an accelerometer for providing a signal representative of G-forces incident along the vertical axis of the aircraft; means for switching between two system operating modes, the first operating mode providing a first set of input signals, and the second operating mode providing a second set of input signals different from the first set; multiple input control means responsive to the G-force signal and the first or second set of input signals for providing a control signal; a control valve responsive to the control signal and formed to be connected for controlling the volume of air supplied to the anti-G suit; and means responsive to the air pressure supplied to the anti-G suit and formed to be connected at the outlet of said control valve, for providing a feedback signal connectable through said switching means to said control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification