Power plants – Combustion products used as motive fluid
Patent
1981-08-13
1984-02-14
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 39161, 60 3927, 60 39281, 60 3929, F02C 928
Patent
active
044308558
ABSTRACT:
A process and a device for detecting a rotating stall in a turbojet engine having two rotating spools including a high pressure spool and a low pressure spool, wherein the rotation speed (N.sub.HP, N.sub.BP) of each of said spools is measured, and the derivative relative to time dN.sub.HP /dt of the rotation speed (N.sub.HP) of the high pressure spool is derived. A command signal is generated as soon as the following conditions are met: ##EQU1## where A, B and C are constant values.
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Deneux Pierre E.
Faure Patrick J.
Laffitte Denis R. G.
Lemaoult Michel E. M.
Casaregola Louis J.
SNECMA
Stout Donald E.
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