021 01 Airframe & Systems

Design and Parts of an Aircraft. Acting forces on said parts

Design and Parts of an Aircraft. Acting forces on said parts


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Cartes-fiches 47
Langue English
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Niveau Autres
Crée / Actualisé 31.07.2022 / 09.09.2022
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Which hydraulic pump type is demand regulated? 

Variable displacement pump (piston type)
used between 1500 and 6000 PSI.

Which hydraulic pump type delivers a constant output?

Gear type pump.

Ideal up to 1500 psi.

Is the hydraulic system inop if the miconic element in an oil filter clogs up?

No, there is a relief valve, which is closed by a spring in normal operation mode and letting the oil flow through the filter material (micronic element). In case the filter becomes clogged up and the differential pressure overcomes the spring force, the relief valve openes and the oil can bypass the filter material. 

What is a single-acting actuator?

What is a double-acting balanced actuator?

What is a double-acting unbalanced actuator?

What is the working principle of a hydraulic accumulator?

By using hydraulic fluid to compress air (the oil & air separated by a synthetic rubber bladder), the compressed air can transfer energy back to the hydraulic oil in case of sudden pressure loss.