**PRINT THIS ANSWER SHEET TO FILL OUT AND TURN
IN**
NAME_________________________________ CLASS____________________
DATE____________

## Wind Tunnel Aerodynamics Worksheet

- The measured velocity in the rectangular test section (A) is
10 m/sec. The initial dimensions of the test section are 3 m high
and 4 m wide.
- What is the cross-sectional area (A)?
________________
- What is the constant (V x A)? ________________
- What cross-sectional area (A) will I need to double the
velocity? ________________
- What cross-sectional area ( A) will I need to decrease
the velocity fourfold? ________________
- What would the velocity be if I changed the dimensions
to 6 m high and 4 m wide?_____________________________
- What would the velocity be if I changed the dimensions
to 5 m high and 5 m wide? _____________________________

- Assume that the wind tunnel test section (A) is triangular.
Our initial velocity is still 10 m/sec.
- What is the formula for the area of a
triangular cross-section? ________________
- The triangular test section has a base of 5 m and a
height of 4 m. What is the Area (A)?
_____________________________
- What is the constant (V x A)?
_____________________________
- What cross-sectional area (A) will I need to double the
velocity? _____________________________
- Give a base and height measurement which would result in
the cross-sectional area in Problem 2d.
_____________________________
- What would the velocity be if I changed the dimensions
to a base of 8 m and a height of 10 m?
_____________________________

- The fan exit section (B) is circular in shape. The initial
velocity is again 10 m/sec.
- What is the formula for the area of a circular
cross section? _____________________________
- The cross-sectional area of B is 20 sq. m. What is the
radius? _____________________________
- What is the constant (V x A)?
_____________________________
- If I rebuilt this section, what radius would be required
to generate a velocity of 50 m/sec.?
_____________________________

- The cross-sectional areas of Test Section (A), Fan Exit
Section (B), and Section C are 20, 60, and 100 m respectively. The
velocity at B, the Fan Exit Section, is 50 m/sec.
- What is the constant (V x A)?
_______________________________________
- What is the velocity at cross section C?
_______________________________________
- What is the velocity at Test Section A?
_______________________________________