Thermally valved cooling system for exhaust nozzle systems

Details Thermally valved cooling system for exhaust nozzle systems Thermally valved cooling system for exhaust nozzle systems

1990-11-28

1992-07-21

Casaregola, Louis J.

Power plants

Reaction motor

Method of operation

60266, F02K 182

Patent

active

051312220

ABSTRACT:
Flow rate of coolant air is increased upon elevated nozzle gas temperatures to increase nozzle liner cooling effect. A hot side curved plate is superposed over a cold side curved plate which overlays a pressurized cooling air cavity. First and second sets of apertures are formed through the first and second plates respectively. At low temperature operation, the gap between the plates is small and the staggering of the apertures restricts the flow rate of cooling gas through the plates. As temperatures rise, the hot side plate thermally expands and the gap between the plates increases to reduce the mechanical impedance effect of the staggering and to thus increase coolant flow rates.

REFERENCES:
patent: 2874536 (1959-02-01), Benson et al.
patent: 4422300 (1983-12-01), Dierberger et al.
patent: 4747542 (1988-05-01), Cires et al.
patent: 4747543 (1988-05-01), Madden

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