Pneumatic valve control for circulation control aircraft

Details Pneumatic valve control for circulation control aircraft Pneumatic valve control for circulation control aircraft

1983-12-09

1985-03-26

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

With fluid passage in working member communicating with...

Air and watercraft propellers

244 1711, B64C 1124, F01D 518

Patent

active

045070504

ABSTRACT:
A circulation control rotor system in which butterfly valves (44, 46) control the flow of compressed air from a plenum chamber (40) to the rotor blades (14). Each has an actuator (48, 52) positioning the valve in accordance with a control input and in which a spring loaded averaging linkage (120) between adjacent valves around a plenum chamber circumference acts to position the valve at an average position of the two adjacent valves if a fault in the actuator or within its control or power system should develop. Should such a fault develop, as determined by a comparison of actual valve position with command position, the faulty valve's actuator is shut down.

REFERENCES:
patent: 2925129 (1960-02-01), Yuan et al.
patent: 3348618 (1967-10-01), Flint et al.
patent: 3918833 (1975-11-01), Eilertson
patent: 3990811 (1976-11-01), Danielson
patent: 4132500 (1979-01-01), Reader et al.
patent: 4242044 (1980-12-01), McCoubrey
Reader, Kirkpatrick, Williams, "Status Report on Adv. Develop. Prog. Utilizing CCR Technology," Fourth Europ. Rotorcraft and Powered Lift Aircraft Forum, Stresa, Italy, Sep. 13-15, 1978.
Barnes, Kirkpatrick, McCoumbrey, "Circulation Control Rotor Flight Demonstrator," AHS Mideast Region Symposium on Rotor Technology, Aug. 1976.

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