104: AIRFRAME FUNDAMENTALS
SH/HH-60F/H EAWS SPECIFIC
1. State the purpose of a hydraulic patch test.
To ensure the cleanliness and purity in the hydraulic system.
2. State the purpose of a Blade Inspection Method (BIM) indicator.
a. In the leading edge of the blade is a spar that runs the length of the blade. The spar contains nitrogen and if there is a leak in the spar the BIM will change to 3 black lines.
b. The BIM under proper conditions is all white.
3. State the purpose of conducting Flight Control system rigging.
To bring flight control perimeters into straight level flight, as set by the factory.
4. State the purpose of a tactical paint scheme.
The paint design is for each A/C type to reduce visual detection by matching reflection of operational
surroundings.
5. State the two methods of locking and unlocking tail wheel lock pin.
a. Manually
b. Electrically
6. State the factors that affect helicopter flight.
a. Lift: Counter acts the force of weight causing the helo to rise.
b. Weight: Force of gravity pulling helo downward.
c. Drag: Friction of air pushing on the helo.
d. Thrust: Counter acts the force of drag causing helo to go forward.
7. State the factors that affect rotor blade lift.
Increasing the pitch of the main blades creating a high-pressure area on the lower side of the blade and a low-pressure area on the upper side of the blade, this creates lift. Lift must be greater or equal to weight if lift is to be sustained.
8. State the location and purpose of the main rotor head dampers.
a. Between each spindle and hub.
b. Purpose to reduce the lead and lag of the main rotor blades and absorb main rotor head start load.
9. Explain how the following flight controls affect helo flight.
a. Collective stick- change pitch of main rotor blade. Increase or decrease lift
b. Cyclic stick- changes the angle of the rotor disk. Controls forward aft and lateral movement
c. Rudder pedals- changes pitch of tail rotor blades. Controls helo heading
10. State what must be done for effective helo corrosion prevention.
A/C must be washed every 7 days at sea and every 14 days on shore.
11. State the two areas on the helo, which must have particular attention during a corrosion inspection.
a. Gear boxes.
b. Avionics.
12. State the approved cleaning materials and methods.
a. A/C cleaning compound Mil-C-85570 type 1 or II.
b. Mixing procedures for heavy dirt is 1 part-cleaning compound to 1 part water.
c. Mixing procedures for light dirt 1 part-cleaning compound to 9 parts water.
d. Clean A/C from bottom to top.
13. State the purpose for emergency reclamation procedures.
To salvage salvageable components, and to remove them by their priority.
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Kunz and Herring's SH-60 EAWS Tutorial
Helicopter Anti-Submarine Squadron Eight
For inputs, comments, or questions please contact:
AW1 Benjamin Kunz
kimberly.a.king@navy.mil
AZC(AW/NAC) Kimberly King