blade tracking and vibration analysis Flashcards
1
Q
what are the 4 frequency of vibration levels experienced on helicopters?
A
extremely low, low, medium, high
2
Q
what frequency of vibrations do tail rotor and drive shaft produce?
A
high frequency
3
Q
adding or removing weights in main rotor system reduces what?
A
vibrations - provides lateral balance
4
Q
hanging rotor blades from the roof to check their balance is known as what?
A
static balancing
5
Q
using different reflective colours on rotor blades to find blade path in flight is known as what?
A
dynamic balancing
6
Q
by adding or reducing weights of the tail rotor what is achieved?
A
tail rotor balancing
7
Q
running string from one blade tip to opposite blade tip to check if the string intercepts through known points is called what?
A
rotor alignment
