EXAM 1 OVERVIEW Flashcards
What is the dominant force in the rotor system?
Centrifugal force; takes gravitational droop out of inert rotor blade rigidity
weather proximity stations (3)
on station = within 5SM (OS)
vicinity = 5-10SM (VC)
distant = beyond 10SM (D)
What does sky clear/clear skies represent?
visibility being up to or higher than 12000 statute miles around the horizon; unlimited visibility (VV)
3 components of atmospheric density
temperature
humidity
pressure
conditions favorable to flight
low temp
high pressure
low humidity
varying wind components
60 degrees, greater than 60kys
to be considered a peak wind (PKW) reported in remarks, wind must be a minimum of:
25kts
2 types of airfoils
symmetrical
nonsymmetical
unsymmetrical
what 2 descriptions are not considered a ceiling
scattered/ few
2 conditions considered a ceiling
broken/ overcast
TO (totally obscured) definition
cannot determine visibility
AO1 vs. AO2
both automated weather reporting systems, AO2 has a precipitation discriminator which tells the difference between liquid and freezing/frozen precipitation
what is the only way to diminish the effects of induced flow?
increase forward airspeed
rotor blade coning is compromise between what 2 forces
lift and centrifugal force
what are 4 causes of excessive coning
low RPM
high GWT
high G maneuvers
turbulent air
