EP 0046698 B1 19840314 - MEANS AND METHOD FOR DETECTING ROTATING STALL
Title (en)
MEANS AND METHOD FOR DETECTING ROTATING STALL
Publication
Application
Priority
FR 8018024 A 19800813
Abstract (en)
[origin: US4430855A] 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 (NHP, NBP) of each of said spools is measured, and the derivative relative to time dNHP/dt of the rotation speed (NHP) of the high pressure spool is derived. A command signal is generated as soon as the following conditions are met: <IMAGE> where A, B and C are constant values.
IPC 1-7
IPC 8 full level
G01M 15/14 (2006.01); F02C 9/00 (2006.01); F04D 27/02 (2006.01)
CPC (source: EP US)
F04D 27/001 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0046698 A1 19820303; EP 0046698 B1 19840314; DE 3162663 D1 19840419; FR 2488696 A1 19820219; FR 2488696 B1 19831209; JP H0117532 B2 19890330; JP S5760246 A 19820412; US 4430855 A 19840214
DOCDB simple family (application)
EP 81401162 A 19810722; DE 3162663 T 19810722; FR 8018024 A 19800813; JP 12392081 A 19810807; US 29257781 A 19810813