machmeter การใช้

• The Machmeter is, on subsonic aircraft, a warning indicator.
• Modern jet airliners also include ground speed ( GS ) and Machmeter.
• Aircraft capable of flying close to their critical Mach number usually carry a machmeter, an instrument which indicates speed in Mach number terms.
• Supersonic aircraft, like the Concorde and military fighters, use the Machmeter as the main speed instrument with the exception of take-offs and landings.
• :: : I have read that in modern supersonic aircraft the pilots are totally reliant on the Machmeter to know when the aircraft reaches Mach 1.0 and passes it.
• In simple aircraft, without an air data computer or Machmeter, true airspeed can be calculated as a function of calibrated airspeed and local air density ( or static air temperature and pressure altitude which determine density ).
• The Machmeter fitted to service Lightning F . 1s and F . 1Bs had a scale that stopped at Mach 1.8  with a redline at 1.7 . and the service limit of was occasionally ignored.
• :: : : I believe that there was a large digital machmeter on display in the passenger cabin, so that people could tell when they were flying faster than sound . " Concorde History-Supersonic Proving " quotes Robert Hotz, editor of " Aviation Week " and " Space Technology " : " The most sensational aspect of flying as a passenger at Mach 2 in a supersonic transport is that there are no sensations whatsoever that differ from those in the current generation of subsonic jets . . " . " What was it like to fly on the Concorde ? " says : " The highlights for me : Knowing that you're going Mach 2.