Abstract:
An anti-flameout safety system for a gas turbine engine is disclosed which prevents engine flameout in the event of ingestion of hail and/or water through the engine intake. The anti-flameout safety system has a detector to detect the water concentration in the engine which generates a signal when the water concentration is at or above a predetermined level and an engine control means which is associated with the detector such that, when the detector generates the signal, the engine control means automatically increases the engine power output.
Abstract:
A method and apparatus for detecting a fouled fluid filter are disclosed in which the fluid pressure at the outlet of the fluid filter is corrected by a correction pressure to determine a corrected pressure drop. Such a corrected pressure drop has a mathematical function which passes through a maximum magnitude before the fluid flowing through the fluid filter reaches a maximum value. The corrected pressure drop is monitored during the operation of the fluid filter and when the corrected pressure drop reaches a predetermined threshold value, before the engine with which the fluid filter is associated reaches its maximum power, an alarm will be actuated.
Abstract:
A sealed transmission assembly coupling a first rotary shaft mounted in a first casing to a second rotary shaft substantially aligned with the first shaft and mounted in a second casing fixed to the first casing is disclosed which enables replacement of leaky seals or part of the transmission chain to be effected quickly and without disconnecting the second casing from the first casing. In this assembly the first shaft is tubular, the second casing has a tubular protrusion which extends through the first casing inside the first shaft and projects into a chamber defined by a cover which is removably secured to the first casing on the opposite side from the second casing, the second shaft has an extension projecting through the tubular protrusion, a removable driving member connects the end of the extension to the first shaft for rotation therewith, and removable sealing means are disposed between the driving member and the end of the tubular protrusion projecting into the chamber, the arrangement being such that the driving member and the sealing means can be disassembled, after removal of the cover, without disconnecting the second casing.
Abstract:
System for measuring the temperature of a gas by sampling, having a measurement probe with a certain permanent error. The system includes in addition two corrective probes placed in contact with said gas sample, one of the probes having essentially the same error as the measurement probe, the other probe having a double error. These three probes are advantageously thermocouples connected in opposition in a predetermined order so that the measurement error .DELTA.T obtained by the measurement probe in relation to the real temperature of the gases Tg is compensated for by those from the corrective probes.