Flight Theory and Aerodynamics. Joseph R. Badick

Flight Theory and Aerodynamics - Joseph R. Badick


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      EXAMPLE

      Calculate the braking force on dry concrete when the normal force (N) is 2000 lb.

equation

a acceleration (ft/s2)
E Energy (ft‐lb)
KE Kinetic energy (ft‐lb)
PE Potential energy (ft‐lb)
TE Total energy (ft‐lb)
F Force (lb)
F b Braking force (lb)
g Acceleration of gravity (ft/s2)
h Height (ft)
HP Horsepower
L Moment arm (ft or in.)
m Mass (slugs, lb‐s2/ft)
M Moment (ft‐lb or in.‐lb)
N Normal force (lb)
r Radius (ft)
rpm Revolutions per minute
s Distance (ft)
T Thrust (lb)
t Time (second)
V Velocity (ft/s) or (kts.)
Vf Final velocity (ft/s)
V k Velocity (kts.)
V i Initial velocity (ft/s)
V t Tangential (tip) speed (ft/s)
W Weight (lb)
μ (mu) Coefficient of friction (dimensionless)

      Acceleration

      Area

      Arm

      Coefficient of friction

      Centripetal force

      Component vector

      Energy

      Equilibrium

      Force

      Friction

      Kinetic energy

      Laws of motion

      Linear

      Mass

      Mechanical energy

      Motion

      Potential energy

      Power

      Pressure

      Resultant vector

      Rotational motion

      Scalar quantity

      Velocity

      Vector quantity

      Vector resolution

      Work

      Note: Answers to problems are given at the end of the book.

      1 Convert 65 kts. to fps.

      2 Convert 200 fps to kts.

      3 Convert 35 kts. to fpm.

      4 Convert 52 nm to sm.

      5 An airplane weighs 16 000 lb. The local gravitational acceleration g is 32.2 fps2. What is the mass of the airplane?

      6 The airplane in Problem 5 accelerates down the runway with a net forward force (thrust less drag) of 6000 lb. Find the acceleration of the airplane.

      7 The airplane in Problem 6 starts from a brakes‐locked position on the runway. The


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