Set of flashcards AC-SYS MC

Flashcards	77
Students	62
Language	English
Category	Technology
Level	University
Created / Updated	22.01.2018 / 09.01.2021
Licencing	Not defined
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A minor aircraft system failure

causes a significant increase in crew workload

slightly reduces the aircrafts safety margins

can occur more than once during the operational life of an aircraft

can cause injuries to passengers

A major aircraft system failure

causes the loss of the aircraft and fatal injuries to the crew

significantly reduces the aircrafts safety margins

can occur more than once during the operational life of an aircraft

can cause injuries to passengers

The wing chordwise pressure distribution defines

the lateral position of resultant aerodynamic loads

the longitudinal position of resultant aerodynamic loads

the wing bending moment at the root

the wing torsion moment

In load analysis, the system of reference for the equilibrium of loads is

stationary

moving with the mass of air

moving with the aircraft

absolute

The ultimate stress:

causes minimal permanent deformation of material (usually 0.2%)

is the maximum stress that is reached before the material breaks

is important for brittle materials as glass

is just above the elastic limit of the material

Gust loads can be reduced by design if

the wing area is as large as possible

the aircraft is as light as possible

the wing aspect ratio is as high as possible

the cruise altitude is as high as possible

The diameter of an oleo shock absorber depends on:

the aircraft ramp mass

the landing gear load factor

the internal gas pressure

the maximum vertical speed at touchdown

A constant speed propeller operates at the minimum pitch angle

in high speed cruise

in climb, with max. engine power

at the beginning of the takeoff run

on the ground at idle power