Method for suppressing the pogo effect
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United States of America Patent
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Feb 9, 2021
Grant Date -
Aug 10, 2017
app pub date -
Sep 21, 2015
filing date -
Sep 30, 2014
priority date (Note) -
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Abstract
A field of vehicles propelled by reaction, and more specifically to a method of suppressing the pogo effect in such a vehicle. A feed system for feeding a reaction engine of the vehicle includes a hydraulic accumulator enabling a selection to be made from among a plurality of predetermined operating levels, each corresponding to a different volume of gas. In the method, if a first reference criterion is not satisfied by the current level, the hydraulic accumulator is ordered to make a transition, preferably to an alternative level selected from among alternative levels for which the first reference criterion is satisfied and for which no hydraulic resonant frequency crosses any current mechanical resonant frequency during the transition.
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