If an aeroplane accelerates above the critical Mach number, the first high Mach number characteristic it will usually experience is: 11. a a nose-up pitch or "Shock Stall" b.a violent and sustained oscillation in pitch (porpoising). c Dutch roll and/or spiral instability. da nose-down pitching moment (Mach, or high speed tuck). 12. High speed buffet is caused by: a the shock waves striking the tail. bthe high speed airflow striking the leading edge of the wing. c wing flutter caused by the interaction of the bottom and top surface shock waves d the airflow being detached by the shock wave and the turbulent flow striking the tail.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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11.
If an aeroplane accelerates above the critical Mach number, the first high Mach
number characteristic it will usually experience is:
a a nose-up pitch or "Shock Stall"
b.a violent and sustained oscillation in pitch (porpoising).
c Dutch roll and/or spiral instability.
da nose-down pitching moment (Mach, or high speed tuck).
12.
High speed buffet is caused by:
a the shock waves striking the tail.
b.the high speed airflow striking the leading edge of the wing.
c wing flutter caused by the interaction of the bottom and top surface shock
waves
d the airflow being detached by the shock wave and the turbulent flow striking
the tail.
Transcribed Image Text:11. If an aeroplane accelerates above the critical Mach number, the first high Mach number characteristic it will usually experience is: a a nose-up pitch or "Shock Stall" b.a violent and sustained oscillation in pitch (porpoising). c Dutch roll and/or spiral instability. da nose-down pitching moment (Mach, or high speed tuck). 12. High speed buffet is caused by: a the shock waves striking the tail. b.the high speed airflow striking the leading edge of the wing. c wing flutter caused by the interaction of the bottom and top surface shock waves d the airflow being detached by the shock wave and the turbulent flow striking the tail.
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