Boots – shoes – and leggings
Patent
1988-03-11
1989-11-07
Lall, Parshotam S.
Boots, shoes, and leggings
36457104, 73 3, G06F 2500
Patent
active
048796620
ABSTRACT:
A fluid system for calibrating a variable area metering valve during flight when the fluid receiver is not in operation employs several single point fixed calibration orifices that are sequentially used to establish a corresponding number of calibration points in a short time interval. The position of the metering valve movable element is stored in a memory of a microprocessor for each calibration point and the metering valve may thereafter be driven by the microprocessor to control with precision flow rates to the receiver without the need for a flow meter. Operation is free to bench calibration inaccuracies and possible drift due to mechanical wear.
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"Control of Aircraft and Missle Power Plants", Sobey & Suggs .COPYRGT.1963, Wiley & Sons, pp. 6-7, 32-43.
Suttie Peter J.
Vicari John J.
Lall Parshotam S.
Melnick S. A.
Sundstrand Corporation
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