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Abstract

Nearly all modern aircraft use some form of hydraulic actuation, for example to power the aircraft undercarriage, wheel brakes and flying control surfaces. Hydraulic actuation provides instant response, rigidity and the immense power needed to operate such systems. For these reasons, hydraulic power is likely to remain an integral part of aircraft systems engineering for many years to come and its study remains of paramount importance for those entering the aircraft engineering profession.

This unit has been designed to provide a thorough introduction to the principles of hydraulic transmission and the associated aircraft systems and components. In particular the principles associated with hydraulic power actuation and their application in modern hydraulic power supply systems is covered.
The purpose, construction and operation of aircraft landing gear and retardation systems are also covered, including the provision made in an emergency for loss of system power. To emphasise the benefits that may be gained from hydraulic actuation and the current designs of modern aircraft, both manual and hydraulically powered flight control systems and their associated components are covered in detail.

The final part of the unit allows learners to carry out a number of selected maintenance activities directly associated with hydraulic power, landing gear, retardation and flying control systems and equipment.

This unit provides some of the knowledge required for learners wishing to progress to the European Aviation Safety Agency (EASA) Part 66 licensing requirements. It will also benefit those seeking employment within the armed forces or the aircraft manufacturing industry.


for more:
http://docs.googleviewer?a=v&q=cache:X8xKCjeidmgJ:edexcelmigrationdocuments/BTEC%2520Nationals/313245_Unit_77_Aircraft_Hydraulic_Systems.pdf+Unit+77:+Aircraft+Hydraulic+Systems&hl=en&gl=in&pid=bl&srcid=ADGEESg9hYbFYXr3RrJxUUKD1lODrAOydp5bWQEUlIqjvfUDCZJXu30pPR9vxu6RofRbCDAJZwgxhAQ_SOM2dy9XshRCePqwKOOJ7r4hrNTw_RblqAngeA5zA0UH5v5C-E_ZPmaBh1lQ&sig=AHIEtbRa2EwQyU-M3VDhS-oz5bkfVymtFA

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