AVIT 421 - Exam 1questions and answers Graded
A+
what side of the normal shock wave has subsonic flow - ✅✅back side
what side of the normal shock wave has supersonic flow - ✅✅front side
subsonic speed range - ✅✅0 to Mcrit
transonic speed range - ✅✅Mcrit to mach 1.2
supersonic speed range - ✅✅mach 1.2 to mach 5.0
low supersonic speed range - ✅✅mach 1.2 to mach 3.0
high supersonic speed range - ✅✅mach 3.0 to mach 5.0
hypersonic speed range - ✅✅faster than mach 5.0
at what speed are thermodynamics as important as aerodynamics - ✅✅above
mach 3.0
what is created when in hypersonic flight - ✅✅plasma
, how is plasma created - ✅✅ripping electrons from orbit
why is transonic flight dangerous - ✅✅the airflow is not uniform between
super and subsonic
what does the speed of sound vary with - ✅✅atmospheric conditions
which atmospheric condition will most strongly affect the speed of sound -
✅✅temperature
as temperature decreases, will the speed of sound increase or decrease -
✅✅decrease (get slower)
how is speed of sound connected to temperature - ✅✅they are proportional
does the speed of sound increase or decrease with altitude - ✅✅decreases
because temperature decreases
what happens to the speed of sound once you hit the tropopause -
✅✅increases because temperature increases
if you climb out at a constant mach number, what will happen to true airspeed -
✅✅decrease
how does humidity affect the speed of sound - ✅✅increases the speed of
sound by 0.1 - 0.6 %
A+
what side of the normal shock wave has subsonic flow - ✅✅back side
what side of the normal shock wave has supersonic flow - ✅✅front side
subsonic speed range - ✅✅0 to Mcrit
transonic speed range - ✅✅Mcrit to mach 1.2
supersonic speed range - ✅✅mach 1.2 to mach 5.0
low supersonic speed range - ✅✅mach 1.2 to mach 3.0
high supersonic speed range - ✅✅mach 3.0 to mach 5.0
hypersonic speed range - ✅✅faster than mach 5.0
at what speed are thermodynamics as important as aerodynamics - ✅✅above
mach 3.0
what is created when in hypersonic flight - ✅✅plasma
, how is plasma created - ✅✅ripping electrons from orbit
why is transonic flight dangerous - ✅✅the airflow is not uniform between
super and subsonic
what does the speed of sound vary with - ✅✅atmospheric conditions
which atmospheric condition will most strongly affect the speed of sound -
✅✅temperature
as temperature decreases, will the speed of sound increase or decrease -
✅✅decrease (get slower)
how is speed of sound connected to temperature - ✅✅they are proportional
does the speed of sound increase or decrease with altitude - ✅✅decreases
because temperature decreases
what happens to the speed of sound once you hit the tropopause -
✅✅increases because temperature increases
if you climb out at a constant mach number, what will happen to true airspeed -
✅✅decrease
how does humidity affect the speed of sound - ✅✅increases the speed of
sound by 0.1 - 0.6 %
