Powerplant
Where is the engine RPM sensor Located?
Right Mag
Symptoms of Power Failure? Engine and Drive System
DRIVE SYSTEM: Unusual noise or vibration, nose right or left yaw, increasing engine rpm with decreasing rotor RPM.
What drives the hydraulic pump during an engine failure?
The pump is directly mounted and driven by the main rotor gear box.
EP for the clutch light: Verbatim
Clutch light may come on momentarily during run up or during flight to re-tension belts as they warm up and stretch slightly. This is normal. However, if the light flickers or comes on in flight and doesn't not go out for 10 seconds, pull the clutch circuit breaker and land as soon as practical. Reduce power and land immediately if there are other indications of drive system failure.
Which EP does the following note belong to? "Low RPM warning system and governor are inoperative with battery and alternator switches both off"
Electrical Fire in Flight
Why are our engines de rated?
To ensure performance up to a limit altitude called critical altitude, and to extend the TBO time.
How many spiral bevel gears are there in our drive system?
4
Which type of hydraulic fluid do we use?
MIL PRF 5606
MIL H 5606
Proper belt slack is indicated by the turning of the main rotor within __________ of clutch engagement?
5 Seconds
Above ______ feet, throttle-collective correlation and governor are less effective, therefore power changes should be slow and smooth.
100 Points: Cadet
100 Points: Raven
Cadet: 4000'
Raven: 6000'
O 540 F1B5 and IO 540 AE1A5 both utilize:
A.) Timing Belt
b.) Timing Chain
c.) Gear driven engine timing
d.) Hydraulically Driven engine timing
Gear Driven
What is a Fatigue Life Limited Part?
A part that must be removed from the helicopter at a specific time interval and retired permanently from service by being damaged destroyed, or disposed of.
What happens when you turn off the hydraulics switch? Details
Turning off the switch energizes the pump bypass solenoid that opens a valve and depressurizes the system.
How many spring switches are there on the clutch actuator?
2
The following caution note belongs to which EP? "Increase rotor RPM to 97% minimum or full down collective when autorotating below 500 feet AGL."
Minimum Rate of Descent Configuration
Answer 1 for complete points
How much does a new O 540 F1B5 Cost? (Within 5 grand)
What is the firing order?
How many pushrods does the 0 540 have?
55,276 with core shipped
145236
12 bruh
For 400 points, name the three drive system speed increasing / reducing ratios
133.34 points: Engine to upper sheave .778:1 speed reducing
133.34 point: Driveline to tail-rotor 31:27 speed increasing
133.34 points: Driveline to main rotor 11:57 speed reducing
Describe the irreversibility feature of hydraulic servos.
This feature prevents feedback from the main rotor. This feedback could make aircraft control highly challenging if not impossible. The servos require approximately 80 PSI to ensure irreversibility.
In inches, what is the extension limit of the clutch actuator?
(Get within 1 inch for full points)
1.6
Full carburetor heat reduces hover ceilings by up to ______ feet?
2400
How often must the Main rotor and Tail rotor drive shafts be replaced on an R44 Raven?
A. 2200
B. 2400
C. 4400
D. 4800
Every 4400 Hours
What are the three main components of the spray clutch?
Outer Race
Sprags
Inner Race
What is the capacity of the hydraulic reservoir?
1.3 Pints ya dummy
What happens if the spring switches fail on the clutch actuator?
The extension limit switches will disengage the clutch before the VBelts suffer damage.
For all 500 points, state the full tail number for HH, LN, and the Animal
N442HH (166.67 points)
N637LN (166.67 points)
N160TH (166.67 points)