記憶度
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問題一覧
1
Sticky or adhesive characteristic of a fluid.
Viscosity
2
Assumed to involve no friction, thermal conduction, or diffusion
Inviscid Flow
3
The region of viscous flow which has been retarded owing to friction at the surface
Boundary Layer
4
Are smooth and regular and the fluid elements smoothly along the streamlines
Laminar Flow
5
Breaks up and a fluid elements move in a random, irregular torturous fashion
Turbulent Flow
6
Measure of ratio if inertial forces to viscous forces
Reynold’s Number
7
Where Laminar smooth flowing turns into Turbulent flow, is where the Reynolds Number reaches critical value
Transition Point
8
Causes shear stress at the surface
Air Friction
9
Contributes to Aerodynamic Drag
Skin Friction Drag
10
Pressure drag due to separation
Flow Separation
11
A condition in aerodynamics and aviation wherein the AOA increases beyond a certain point such that lift begins to decrease
Stall
12
this type of stall are practiced to simulate take-off and climb-out conditions and configurations
Departure Stall
13
occurs when you pull the aircraft nose up too high while maintaining full power.
power on stall
14
this type of stall are practiced to simulate normal approach-to-landing conditions and configurations
Arrival Stall
15
occurs when an aircraft is in a landing configuration, usually with the landing gear down and reduced power.
power off stall
16
More severe than un-accelerated stalls and are often unexpected
Accelerated Stall
17
simulates a base to final skidding turn, where pilots may apply aileron in one direction rudder in the direction.
Cross Controlled Stall
18
Air is the fluid through which airplanes move
Drag
19
is comprised of all the forces that work to slow an aircraft’s movement.
Parasite Drag
20
is the portion of parasite drag generated by the aircraft due to its shape and airflow around it.
Form Drag
21
comes from the intersection of airstreams that creates eddy currents, turbulence, or restricts smooth airflow.
Interference Drag
22
is the aerodynamic resistance due to the contact of moving air with the surface of an aircraft.
Skin Friction Drag
23
The second basic type of drag
Induced Drag
24
The relationship between the drag coefficient and the lift coefficient.
Drag Polar
25
As the air and vortices roll off the back of your wing, they angle down
Downwash