Transcription of CHAPTER 1 - HYDRAULIC SYSTEMS
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CHAPTER 1 - HYDRAULIC SYSTEMS
AP3456 4-1- HYDRAULIC SYSTEMS Revised Jun 10 Page 1 of 10 CHAPTER 1 - HYDRAULIC SYSTEMS Introduction 1. HYDRAULIC power has unique characteristics which influence its selection to power aircraft SYSTEMS instead of electrics and pneumatics, the other available secondary power SYSTEMS . The advantages of HYDRAULIC power are that: a. It is capable of transmitting very high forces. b. It has rapid and precise response to input signals. c. It has good power to weight ratio. d. It is simple and reliable. e. It is not affected by electro-magnetic interference. Although it is less versatile than present generation electric/electronic SYSTEMS , HYDRAULIC power is the normal secondary power source used in aircraft for operation of those aircraft SYSTEMS which require large power inputs and precise and rapid movement. These include flying controls, flaps, retractable undercarriages and wheel brakes.
volume, whilst the other is self-regulating, automatically varying its output to meet system demands. 6. Fixed Displacement Pumps. ... so does the stroke of the pistons and the output of the pump. Thus, when system pressure drops as power demands on the pump are increased, the output of the pump is ...
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