5-3 Brakes
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Transcript of 5-3 Brakes
AMS 5 - 3Brakes
AMS 5 - 3Brakes
AMS 5 Part 3
AMS 5.6 Describe the construction, operation, function, inspection and maintenance of an aircraft braking system.
AMS 5.7 From given information, describe the function of components and principles of operation of the following systems:
Nose wheel steering;
Power wheel brakes, and
Anti-skid braking systems.
AMS 5.8 Describe a typical brake temperature monitoring system and be able to use a brake limitation chart.
Drum BrakeDrum Brake
Non-Energising BrakesNon-Energising Brakes
Expander Tube ConstructionExpander Tube Construction
Single Disk BrakesSingle Disk Brakes
Keyed
Single Disk BrakesSingle Disk Brakes
Bolted
Multiple Disk BrakeMultiple Disk Brake
Segmented Rotor BrakeSegmented Rotor Brake
Automatic AdjustersAutomatic Adjusters
Single Disk
Automatic AdjustersAutomatic Adjusters
Multi Disk
Master CylindersMaster Cylinders
Released
Pressure applied
Independent Master CylinderIndependent Master Cylinder
Brake ValveBrake ValvePressure Boosted
BrakesPressure Boosted
Brakes
Parking Brake ValveParking Brake Valve
2 Position Type SAAB 3402 Position Type SAAB 340
Rotary Park Brake ValveRotary Park Brake Valve
Sikorsky, Blackhawk/Seahawk HelicoptersSikorsky, Blackhawk/Seahawk Helicopters
Brake SystemsBrake Systems
Light aircraft / Wheeled HelicoptersLight aircraft / Wheeled Helicopters
Reservoir
Brake Pedals Parking Brake Handle
Parking Brake Control Valve
Brake Master Cylinder (1 of 4)
Shuttle Valves
Non Powered Hydraulic Brake SystemsNon Powered Hydraulic Brake Systems
Sikorsky, Blackhawk/Seahawk HelicoptersSikorsky, Blackhawk/Seahawk Helicopters
Powered Hydraulic Brake SystemsPowered Hydraulic Brake Systems
LEFT
BRAKES
Power Brake Control ValvePower Brake Control ValveSliding SpoolSliding Spool
Brake Debooster CylinderBrake Debooster Cylinder1. Emergency system pressure line2. Main brake pressure line3. Upper support clamp4. Packing5. Packing6. Debooster cylinder assembly7. Piston8. Piston Spring9. Packing10. Lower support clamp11. Riser tube12. Packing13. Tee Fitting14. Brake line (to pressure relief valve)15. Brake pressure relief valve16. Overflow line17. Brake line (Debooster to shuttle valve)18. Shock strut19. Torque link20. Brake shuttle valve21. Upper end cap22. Snap ring23. Spring retainer24. Valve Spring25. Ball26. Ball pedestal27. Barrel28. Lower end cap
Brake Debooster CylinderBrake Debooster Cylinder
F = A P1500 psi 2 sq. in= 300 psi 10 sq. in
Deboost and Lockout ValveDeboost and Lockout Valve
Anti Skid SystemsAnti Skid Systems
TransducersTransducers
Electro Hydraulic Anti Skid ValveElectro Hydraulic Anti Skid Valve
Anti Skid SystemAnti Skid System
Medium to large aircraftMedium to large aircraft
Zone Description Requirements
Zone I Normal zoneBelow 1 .0 Million ft.lb [138 000 kg m]
No special requirement under normal operations.
Zone II Normal zone1.0 to 2.05 million ft.lb [138 000 to 282 900 kg m]
Delay subsequent take off as indicated by chart
Zone III Caution zone:
2.05 to 4.0 million ft.lb [282 900 to 552 000 kg m]
1. Move aircraft to clear active runway as uneven braking could cause one or more tyres to deflate if energy was in the upper range.
2. Use brakes sparingly to manoeuvre.3. Do not set parking brake.4. Allow to cool for the time indicated by chart.5. After cooling, make a visual check of brakes.
Zone IV. Danger zone Over 4.0 million ft.lb [552 000 kg m]
I. Clear runway immediately as fusible plugs will blow 2 to 30 min. after stopping.
2. Do not apply dry chemical or quench until fusible plugs have released tyre pressure.
3. Do not approach for 1/2 hour or until fusible plugs have blown.
4. Two to three hours are required for brakes to cool enough for safe removal when artificial cooling is not used.
5. Tyres, wheels, and brakes must be replaced.