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0 9 -- hw 3
HomeWork 3
| Question | Answer |
|---|---|
| What is the purpose of a compensating port or valve in a brake master cylinder of an independent brake system? - - Permits the fluid to flow toward or away from the reservoir as temperature changes. - - Assists in the master cylinder piston return. - - Prevents fluid from flowing back to the reservoir. | Permits the fluid to flow toward or away from the reservoir as temperature changes |
| If an aircraft shock strut (air/oil type) bottoms upon initial landing contact, but functions correctly during taxi, the most probable cause is - - low fluid. - - low air charge. - - a restricted metering pin orifice. | low fluid |
| What is the function of a cam incorporated in a nose gear shock strut? - - Provides an internal shimmy damper. - - Straightens the nosewheel. - - Provides steering of aircraft during ground operation. | Straightens the nosewheel |
| Extension of an oleo shock strut is measured to determine the - - amount of oil in the strut. - - physical condition of the strut itself. - - proper operating position of the strut. | proper operating position of the strut |
| Debooster cylinders are used in brake systems primarily to - - reduce brake pressure and maintain static pressure. - - relieve excessive fluid and ensure a positive release. - - reduce the pressure to the brake and increase the volume of fluid flow. | reduce the pressure to the brake and increase the volume of fluid flow |
| If a shock strut bottoms after it has been properly serviced, the - - strut should be disassembled, and the metering pin orifice plate replaced. - - air pressure should be increased. - - strut should be removed, disassembled, and inspected. | strut should be removed, disassembled, and inspected |
| A high-speed aircraft tire with a sound cord body and bead may be recapped - - a maximum of three times. - - only by the tire manufacturer. - - an indefinite number of times. | - an indefinite number of times |
| If an airplane equipped with master cylinders and single-disk brakes has excessive brake pedal travel, but the brakes are hard and effective, the probable cause is - - the master cylinder one-way cup is leaking. - - worn brake linings. - - worn brake disk causing excessive clearance between the notches on the perimeter of the disk and the splines or keys on the wheel. | worn brake linings |
| The correct inflation pressure for an aircraft tire can be obtained from - - tire manufacturer's specifications. - - the aircraft service manual. - - the information stamped on the aircraft wheel. | the aircraft service manual. |
| What should be checked when a shock strut bottoms during a landing? - - Air pressure. - - Packing seals for correct installation. - - Fluid level. | Fluid level |
| How is it determined in a master cylinder brake system that all of the air has been purged from the system? - - By operating a hydraulic unit and watching the system pressure gauge for smooth, full-scale deflection. - - By depressing the brake and noting that the brake is firm and not spongy - - By measuring the amount of fluid return to the master cylinder upon brake release. | By depressing the brake and noting that the brake is firm and not spongy |
| The left brake is dragging excessively on an airplane on which no recent brake service work has been performed. The most probable cause is: - - foreign particles stuck in the master cylinder compensating port. - - excessively worn brake linings. - - low fluid supply in the brake system reservoir. | foreign particles stuck in the master cylinder compensating port |
| If a brake debooster is used in a hydraulic brake system, its position in the system will be - - between the pressure manifold of the main hydraulic system and the power brake control valve. - - between the brake control valve and the brake actuating cylinder. - - in the brake pressure line between the brake pedal and the brake accumulator. | - between the brake control valve and the brake actuating cylinder. |
| The hydraulic packing seals used in a landing gear shock strut are - - generally designed to be compatible with more than one type of fluid. - - kept from direct contact with fluid by Teflon or nylon backup rings. - - used only with a specific type of fluid. | used only with a specific type of fluid |
| Lockout deboosters are primarily pressure reducing valves that - - allow full debooster piston travel without fluid from the high-pressure side entering the low-pressure chamber. - - cannot allow full debooster piston travel without fluid from the high-pressure side entering the low pressure chamber. - - must be bled separately after brake bleeding has been completed. | allow full debooster piston travel without fluid from the high-pressure side entering the low-pressure chamber. |
| A close inspection of a fusible plug reveals the core has experienced some deformation. What is the appropriate maintenance procedure? - - Replace all the fusible plugs. - - Replace the affected fusible plugs. - - Replace with new wheel assembly. | Replace all the fusible plugs |
| Chines are used on some aircraft nose wheel tires to help - - nose gear extension at higher air speeds. - - reduce the possibility of hydroplaning. - - deflect water away from the fuselage. | deflect water away from the fuselage |
| The best safeguards against heat buildup in aircraft tires are - - proper tire inflation, minimum braking, and ground rolls into the wind. - - short ground rolls, slow taxi speeds, minimum braking, and proper tire inflation. - - minimum braking, proper tire inflation, and long ground rolls. | short ground rolls, slow taxi speeds, minimum braking, and proper tire inflation |
| The fusible plugs installed in some aircraft wheels will - - indicate tire tread separation. - - prevent overinflation. - - melt at a specified elevated temperature. | melt at a specified elevated temperature |
| What action, if any, should be taken when there is a difference of more than 5 pounds of air pressure in tires mounted as duals? - - Replace both tires. - - Correct the discrepancy and enter in the aircraft records. - - Replace the tire with the lowest pressure. | Correct the discrepancy and enter in the aircraft records |
Created by:
sampizzuto