Landing Gear & Brake Systems Flashcards

What is the primary purpose of an oleo strut in aircraft landing gear?

Answer: To absorb landing shock through hydraulic fluid and compressed nitrogen

An oleo strut uses hydraulic fluid and compressed nitrogen to absorb and dissipate the energy of landing impact.

When servicing an oleo strut, the correct fluid level is verified by:

Answer: Deflating the strut fully, adding fluid to the specified level, then re-inflating with nitrogen

The correct procedure is to fully deflate the strut, fill it with the specified hydraulic fluid to the proper level, then re-inflate with dry nitrogen to the manufacturer's specified pressure.

Which type of brake system uses a single-disc design with one puck-style actuating cylinder on each side?

Answer: Single-disc floating caliper brake

A single-disc floating caliper brake uses one rotor disc and a caliper that floats to apply equal pressure from both sides with pistons.

What causes brake fade on aircraft disc brakes during repeated hard stops?

Answer: Excessive heat buildup reducing friction between pads and disc

Brake fade occurs when excessive heat reduces the coefficient of friction between the brake pads and disc, decreasing stopping effectiveness.

The minimum allowable disc thickness for aircraft brakes is specified in the:

Answer: Component Maintenance Manual or Aircraft Maintenance Manual

The minimum disc thickness limit is found in the applicable Component Maintenance Manual (CMM) or Aircraft Maintenance Manual (AMM) for that specific aircraft and brake assembly.

What is the function of the torque links (scissors) on a nose gear oleo strut?

Answer: To prevent strut rotation while allowing vertical movement

Torque links (scissors links) connect the upper and lower strut cylinders to prevent rotation while allowing the strut to extend and compress freely.