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31 Cards in this Set
- Front
- Back
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What is the purpose of the BIM indicator?
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Checks pressure of SPAR.
(By comparing with a built in reference pressure) - when pressure is bad-black rings show |
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What is the purpose of the pilot-assist servos?
* What stage do they use |
Reduce loads on collective, rudder pedals, and longitudinal load on cyclic.
* 2nd stage |
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Hydraulics run @ __________psi
*return psi? |
3000 psi
*1500 psi |
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What is the purpose of the stab
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keeps bird level through forward flight
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What two areas to pay particular attention to during corrosion inspection?
*additional areas? |
Gearboxes & Avionics
* Belly of Bird, water accumulation areas |
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What is the purpose of a flat coating paint scheme? (3)
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-Protects from corrosion/ deterioration
-reduces glare -reduce detection by camouflage of operational surroundings |
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At what pressure will the priority valve (hyds system) close?
* why? |
2150-2250 psi
* isolates rescue hoist in event of reduction in hyd pressure |
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What does collective stick control?
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changes pitch of all blades simultaneously
-increase or decrease lift |
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What is the purpose of the hydraulic patch test?
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Measures metallic/ non-metallic contaminant levels in A/C & SE hyd systems
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What are the purposes of the main rotor head dampers?
* where are they located |
to restrain hunting of the main rotor blades
* between the hub and spindle |
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What do the three parts of an access/ inspection opening represent? ex. 2.1.9
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First #: work area ( 1-6 of fuselages)
2nd #: left - right - center 1-2-0 3rd #: panel # |
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What does the cyclic stick contol
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Changes the pitch of individual blades
- allows aircraft to roll left or right & pitch up or down (lateral movement) |
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How many wire cutters are on the sierra and where are they located?
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4
-Fwd end of hyd bay cover (doghouse) -aft end of hyd bay cover -1 on each mlg assembly |
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At what pressure will the priority valve open
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2500 psi
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What 2 areas on the bird contain copper-beryllium?
*safety caution? |
Lockpin pullers & droop stops
*never grind or sand (b/c you could inhale or splinter into skin) |
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What do rudder pedals control?
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Pitch of tail rotor blades
(heading; vertical/ yaw axis) |
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How does the rescue hoist work?
* what hyd stage |
Electrically controlled, Hydraulically powered winch
*backup |
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In what order do you wash the bird?
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* starting at tail, from bottom to top.
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What do you do after a wash?
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Lubricate hinges & latches, wipe struts with fluid film/hyd fluid
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What are the ways to lock/ unlock the tail wheel lockpin?
* what is backup method there for? |
Electrically & manually
* manual mode in case of actuator failure |
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What is the purpose of the tail rotor?
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provides counteractive torque to mrb to keep bird from spinning in circle
* also controls heading (yaw control) |
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The tailwheel is capable of rotating ________ degrees?
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360
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What happens to hyd fluid that gets overheated?
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Fluid will decompose by heat releasing toxic gasses
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What is the purpose of mlg strut?
* how does it work |
cushions from shock from landing with 2 stage strut, air/oil
*liquid absorbs energy and air compresses |
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What are the four factors that affect flight?
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Lift, weight, drag, thrust
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What is the purpose of emergency reclamation? (EREC)
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To prevent further damage to AC/ components after exposure to gross amounts of salt water or fire extinguishing agents.
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What are the six sections of the fuselage?
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cockpit, cabin, transition, tail cone, tail rotor pylon, main rotor pylon
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What is the purpose of flight control rigging
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In order to coordinate stick & pedal motions with correct blade angle
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What stages of Hyd's does the tail rotor use.
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1st stage & back up in emergencies
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How many deflectors on the sierra and where are they?
*WSPS |
-MLG Joint def
-step def -TLG def -Windshield def -wiperpost def |
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What are the major components of the hydraulic system?
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Reservoir, pump, selector valve, lines, servos
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