Page Comparison

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Trial #	Maximum Stress (MPa)	Min Safety Factor	Screenshot
1	111.83	2.50
2	144	1.9	Image AddedImage Added

Conclusion

• The landing gear will be able to survive landing

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Author: Ben Lovegrove Date: 10/11/2024

Validation of Servo

• Assuming that Eclipse is 5kg

• Fg = 5(9.81)

= 49.05

Distance of rear landing gear to front landing gear = 676

Distance of front landing gear to CoM = 176

Moment = .176(49.05) - FN (.676)

0 = .176(49.05) - FN(.676)

FN(.676) = .176(49.05)

FN = 12.77N

Assuming coefficient of friction between concrete and foam is 1.8 (twice that of sliding friction, professor said that it would be higher than sliding friction)

radius = .037

Mass Moment of Inertia (xx direction) = 0.038527

alpha = angular velocity, assuming 1radian/sec

Torque = 1.8FN x r + I x alpha

= 0.889 Nm

Servo is 0.297Nm

So we need to select a new servo

Author Ben Lovegrove

Rear Landing Gear

Objective of Simulation

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• Assuming that Eclipse is 5kg

• Fg = 5(9.81)

= 49.05

Distance of rear landing gear to front landing gear = 676

Distance of front landing gear to CoM = 176

Moment = .176(49.05) - FN (.676)

0 = .176(49.05) - FN(.676)

FN(.676) = .176(49.05)

FN = 12.77N

Using Aluminum Alloy

Applied Loads

Load was applied to the far servo holes

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Fixtures

The mounting holes are the fixture for the test.

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Mesh

Results