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Thus, a pilot of a jet aeroplane needs both an airspeed indicator and a Machmeter, with appropriate red lines. An ASI will include a red-and-white striped pointer, or "barber's pole", that automatically moves to indicate the applicable speed limit at any given time. [2]: 15–7
Tachometer showing red lines above 14,000 rpm.. Redline refers to the maximum engine speed at which an internal combustion engine or traction motor and its components are designed to operate without causing damage to the components themselves or other parts of the engine. [1]
On analogue tachometers, speeds above maximum safe operating speed are typically indicated by an area of the gauge marked in red, giving rise to the expression of "redlining" an engine — revving the engine up to the maximum safe limit. Most modern cars typically have a revolution limiter which electronically limits engine speed to prevent damage.
Ground speed is just a pilot aid to estimate if the flight is on time, behind or ahead of schedule. It is not used for takeoff and landing purposes, since the imperative speed for a flying aircraft always is the speed against the wind. The Machmeter is, on subsonic aircraft, a warning indicator. Subsonic aircraft must not fly faster than a ...
In aviation, a variometer – also known as a rate of climb and descent indicator (RCDI), rate-of-climb indicator, vertical speed indicator (VSI), or vertical velocity indicator (VVI) – is one of the flight instruments in an aircraft used to inform the pilot of the rate of descent or climb. [1]
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Avro Vulcan XM655 is one of three remaining taxiable Avro Vulcan strategic bombers, the other two being XH558 and XL426.XM655 is currently owned by Wellesbourne Mountford Airfield and has been maintained by the 655 Maintenance & Preservation Society since 1998, [1]: 205 who keep the aircraft in a taxiable condition.
From 1971, an AWS permanent magnet was fitted ahead of the warning indicator where the permissible speed of a line dropped by more than a third. [13] This was a recommendation of the inquiry into the derailment at Morpeth on 7 May 1969.
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