When any aircraft passes the critical Mach of that particular airframe, the centre of pressure shifts ________(a) Rightwards(b) Leftwards(c) Rearwards(d) FrontwardsThis question was posed to me in a job interview.This intriguing question comes from Aircraft Systems and Aviation topic in portion Aircraft Systems and Aviation Overview of Aircraft Maintenance

When any aircraft passes the critical Mach of that particular airframe

1.	When any aircraft passes the critical Mach of that particular airframe, the centre of pressure shifts ________(a) Rightwards(b) Leftwards(c) Rearwards(d) FrontwardsThis question was posed to me in a job interview.This intriguing question comes from Aircraft Systems and Aviation topic in portion Aircraft Systems and Aviation Overview of Aircraft Maintenance
Answer» The correct choice is (C) Rearwards To EXPLAIN I would say: The centre of pressure SHIFTS rearwards when any aircraft passes the critical Mach of that particular AIRFRAME. This phenomenon causes a pitch down moment on the aircraft, if the centre of GRAVITY still remains where it was.

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