Tutorial 5 12dwqeq
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Landing Gear Design
PA-28RT-201 (Piper Arrow IV) Tutorial 5
Mech390 Section: Group:
Student name ID
1
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5
Grade:
Tutorial Preparation: M. Amin Changizi
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Tires
Read the below pages:
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1- Find how many tire types are used for aircrafts? (10 pt)
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2- What are the basic reasons for different type of tires? (6 pt)
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3- What type and model of tire is used for Piper IV Arrow 28R-201? Why? Please be aware
that the weight of the aircraft is 50% higher than the one of the standard Piper IV Arrow
28R-201. (4 pt)
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4- How many psi is the pressure of Piper Arrow IV 28R-201 tire? What is its section width
range and rim diameter? (6 pt)
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5- Find the below parameters for Piper Arrow IV tire ? (7 pt)
Maximum outside diameter
Minimum outside diameter
Average outside diameter
Loaded radius
Unloaded radius
Pressure of main tire
Maximum force on the wheel
6- What is the Static deflection of tire? Use the appropriate graph in the appendix. (5 pt)
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7- What are the aspect ratio and lift ratio of Piper Arrow IV 28R-201 Modified? (6 pt)
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8- Calculate the radius of gyration and moment of inertia of main landing gear of Piper
Arrow IV 28R-201 Modified? (20 pt)
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9- Compare the moment of inertia which you calculated and the moment of inertia from
radius of gyrations of wheel and tire. Discuss about results. (20 pt)
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10- Calculate growth allowance of main landing gear of Piper Arrow IV 28R-201 modified(6
pt)
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11- Calculate tire clearance of main landing gear of Piper Arrow IV 28R-201 Modified (5 pt)
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12- Calculate footprint of Piper Arrow IV 28R-201 when it is on the soft ground. (10 pt)
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Appendix
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