Measurement using a steel ruler:
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1) In the figure showing an airfoil section measure the thickness of the airfoil section at each station to the nearest 16th of an inch.
(figure available in print form)
2) Find the overall length of the figure
(figure available in print form)
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3) The army plane has a wing area of 375.O sq. ft. If each square foot of the wing can carry an average weight of 25.3 lb, how many pounds can the whole plane carry.
4) If the aircraft shown has a length of 346.5 inches. what is the length in feet.
(figure available in print form)
5) Find the area of the aircraft wing.
(figure available in print form)
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6) Approximately how many cubic feet of baggage can be stored in the plane wing compartment shown.
(figure available in print form)
7) Make a full scale drawing of the airplane shown.
(figure available in print form)
Presentation of Data
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9) The drag of an aircraft increases as the angle of attack is increased, Represent the following data graphically.
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|
|
angle of attack
|
drag lb
|
|
|
0
|
|
100
|
|
|
2
|
|
100
|
|
|
4
|
|
200
|
|
|
6
|
|
250
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|
|
8
|
|
370
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|
|
10
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|
430
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|
|
12
|
|
600
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|
|
14
|
|
800
|
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10) Draw a bar chart to represent the following information.
(figure available in print form)
Weight of an airplane:
11) Calculate the gross weight of the following planes.
|
Airplane
|
Empty weight
|
Useful Load
|
Gross weight
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|
Cessna
|
1,380
|
970
|
|
Boeing 627
|
48,545
|
33,955
|
|
D,C 10
|
30,500
|
25,900
|
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12) The gross weight is 1,530 lbs and the payload is 350 lbs. What percent of the gross weight is payload?
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13) Find (a) the gross weight (b) percent payload (c) mean chord (d) the wing loading (e) the power loading (f) the aspect ratio of this aircraft with the following specifications.
(figure available in print form)
Weight capacity = 4,440 lbs
Useful Load = 3,160 lbs
Payload = 1,000 lbs
Wing area = 460 sq. ft.
Engine: Pratt & 650 h.p
Span = 60 ft 5 ins.
Fuel and Oil Consumption.
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14) An aircraft powered by a : Pratt & Whitney engine with specific fuel of 0.60 lb per hp. hr, and specific oil consumption is 0.025 lb per hp.hr when operating at 735 hp.
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____
a) How many gallons of gasoline will be used in 2 hrs?
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____
b) How many quarts of oil would be consumed in 1 hr?
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c) If the tank holds 206 gals how long can the airplane stay up before the tank is empty?
Navigation and Spherical Geometry:
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15) Construct a wind triangle using the following information
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____
Course 110 degrees
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____
Wind 20 m.p.h from 225 degrees
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____
Air speed 100 m.p.h.
Airfoil
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16) Design an original airfoil section on graph paper and complete a table of data
