AERODYNAMICS

Aerodynamicists have designated a special parameter called the Mach Number in honor of __________________?

• Henri Pitot

• Henry Darci

• Ernst Mach

• Ludwig Mach

The flow regime that has a ratio of 1 since the current velocity of the object matches with the local speed of sound

• Transonic Flow

• Supersonic Flow

• Sonic Flow

• Subsonic Flow

What is the ambient temperature at 42, 000 feet?

• 288.22 K

• 175.46 K

• 138.42 K

• 216.56 K

The maximum speed at which the aircraft may be flying while raising or lowering the gear.

• V_LO

• V_LE

• V_LC

• V_MC

The change in momentum produces a force on the walls which is related to the gas pressure.

• Entalphy

• Dynamic Pressure

• Reservoir Pressure

• Impact Pressure

  
  

An instrument that is most often used in aviation to determine the Mach Number

• Mach Number Indicator

• Airspeed Indicator

• Pressure Altimeter

• Navigation Display

Also called Prandtl Wind Tunnel

• Prandtl Open Wind Tunnel

• Return Air Wind Tunnel

• Gottingen Wind Tunnel

• Open Circuit Wind Tunnel

Purpose is to take a large volume of low velocity air and convert to high velocity air without creating turbulence

• Diffuser

• Contraction Cone

• Reservoir

• Turning Vanes

Which instrument will become inoperative if the pitot tube becomes clogged?

• Vertical Speed Indicator

• Airspeed Indicator

• Altimeter

• All of the above

Is the speed of your aircraft relative to the air it's flying through. Say that the speed is M = 0.8

• Actual Airspeed

• Calibrated Airspeed

• Indicated Airspeed

• True Airspeed