AVS1230_Lab 6_landinggear_2023

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School

Western Michigan University *

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1230

Subject

Mechanical Engineering

Date

Dec 6, 2023

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docx

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3

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AVS 1230 Lab 6: Landing Gear 2023 Name: Victor Castaldo Date: 10/12/2023 Purpose: Understand hydraulic principles. Describe the function of hydraulic components within a system. Identify the structural components of landing gear. Describe typical landing gear retraction and extension systems. Be able to explain landing gear position and warning. Become familiar with aircraft wheels, tires, and brakes. References: FAA AMT Handbook (Textbook) chapter Landing Gear Seminole PA44-180 POH Section 7 Learn how to draw the PA44landing gear video in module content Activities: Part 1: - Research the Piper Seminole Landing Gear and Brake System using The Pilot Operating Handbook POH section 7 (on eLearning in Module content). 1. What type of fluid is used in the landing gear retraction system? 2. What causes the “WARN GEAR UNSAFE” annunciator to illuminate? 3. On takeoff, the landing gear should be retracted before _____________ KIAS. 4. The gear selector switch must be _______________________ before being put in the Up or DOWN position. 5. With the landing gear up, what would cause the gear warning horn to sound? 6. What prevents inadvertent gear retraction when the aircraft is on the ground? 7. What is the method of emergency landing gear extension for the Seminole? 8. What is the tire pressure for the main tires? 9. What is the normal time that it takes to extend or retract the landing gear?
10. The landing gear on the Seminole are ___________________ operated. 11. The landing gear may be lowered at any speed below ________________KIAS. 12. What type of fluid is used in the brake system? 13. What size main and nose tires are installed on the Seminole? 14. Why is it important to not reverse the direction of the landing gear when it is in transit? 15. What can you do to check if one of the landing gear indicator lights is burned out? Part 2 - Using your textbook define the function following parts of the main landing gear. 16. Shock strut 17. Brake disc 18. Torque link 19. Fork 20. Brake caliper 21. Trunnion 22. Side brace link Part 3: -Define the parts of the nose landing gear. 23. Oleo Strut 24. Steering bellcrank 25. Shimmy damper
Part 4: 25 points: Using the POH for the PA 44 and the video “Drawing the PA44 Landing gear video” in module content. Draw a schematic of the PA 44 and label all of the major Landing gear components. Add you scanned image or take a photo and paste here:
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