Study Questions Flashcards
(132 cards)
How are the control surfaces mechanically operated?
Through a manual (unassisted) linkage ( standard bellcrank, push/pull rod, cable, pulley)
What type of trim tabs do the ailerons incorporate and where are the tabs located?
Trailing edge of left aileron. Electrically operated by an actuator consisting of a 28 VDC electric motor. On 47 the right trim tab is mechanically geared to the left trim tab.
How is elevator trim accomplished?
Electric trim motor. Moveable horizontal stabilizer.
How is rudder trim accomplished?
Electric trim control. Located on PCL.
Min prop clearance for nose tire inflated/deflated?
Inflated: 12.5 IN
Deflated: 1.9 IN
Min turn radius?
33ft 6 in
Steering range for nose gear?
With rudder 12 degrees. With brakes, 60 degrees.
How are flaps operated?
Controllable electric selector operating an electric motor, 0, 15, 30, 40.
What kind of flaps?
Fowler-type.
What will cause red flap CAWS to annunciations?
Flap asymmetry of 5 degrees, twist of 2 degrees, flexible shaft failure.
What type of gear? How is shock absorbed?
Tricycle retractable, hydraulically controlled and operated. Gear held in retracted position by hydraulic pressure. Lose pressure, gear will fall. Shock is absorbed through pistons in landing gear.
What kind of brakes?
Hydraulically actuated single disc brake on onboard side of each wheel. Separate from aircraft hydraulic system. Whoever applied most pressure will control brakes between the two pilots.
What kind of engine (model, turbine type, Hp)?
The engine is a Pratt and Whitney PT6A-67B. It is a lightweight, reverse-flow, free turbine, a compressor section having four axial stages and one centrifugal stage impeller, an annular reverse–flow combustion chamber. The engine is rated at 1600 SHP and is flat rated at 1200 shaft horsepower. Supplemental thrust in generated by engine exhaust (jet thrust) accounts for about 6% of total engine power.
How many fuel nozzles and when do they operate?
There are 14 duplex type nozzles, with each nozzle incorporating a primary and secondary valve. During engine start the primary flow begins as soon as there is fuel pressure with the secondary flow kicking in above approximately 45% Ng. Without the secondary flow, the engine may hang at 40-45% NGduring start. For operations from normal idle through max power, all 14 nozzles function with fuel coming from both the primary and secondary valves.
What is the maximum NG?
104% NG
What speed does the power turbine turn?
29,894 RPM, 100% NF
How is the power turbine speed reduced to propeller rotation speed?
The power turbine drives the propeller speed through a Reduction gearbox (RGB) at the front of the engine
When is selection of Beta or reverse range prohibited?
During flight and anytime the engine is shutdown. The PCL is mechanically–linked to propeller hub and will bend and break with no oil lubrication.
What is the minimum oil level for operation?
4 quarts low as indicated on the dipstick
What is the normal oil level to operate?
2 quarts below max hot
What critical element exists with regard to the oil dipstick (other than measuring oil level)?
The dipstick tube is a pressurized part of the oil system, so not properly securing the dipstick will result in oil loss and possible bearing/engine seizure.
Can engine oil brands be mixed?
No; the oil type which is the BP 2380 Green Can.
What is the oil capacity?
Total oil capacity is 14.5 US quarts
When do you check the oil?
MAX HOT (10mins after shutdown) MAX COLD (12hrs after shutdown)