Lernkarten
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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
