Aircraft Major Components & Systems Flashcards
The rotor system consist of
a) A mast, hub, and rotor blades.
b) The engine to transmission coupling, transmission, and rotor head.
c) The control pitch links, teetering bearing, and blade grips.
A) A mast, hub, and rotor blades.
The three basic classifications of rotor systems are
a) Teetering, soft-in-plane, and rigid-in-plane.
b) Flapping, non-flapping, and rigid-in-plane.
c) Semi-rigid, rigid, and fully articulated.
C) Semi-rigid, rigid, and fully articulated
The main rotor blades of a semi-rigid rotor system can
a) flap and feather as a unit.
b) flap and drag individually, but can only feather collectively.
c) flap, drag, and feather independently.
A) flap and feather as a unit.
The main rotor blades of a semi-rigid rotor system can
a) flap together as a unit.
b) flap, drag, and feather independently.
c) feather independently, but cannot flap or drag.
A) flap together as a unit.
Which rotor system is the most susceptible to mast bumping?
a) Rigid.
b) Semi-Rigid.
c) Fully Articulated.
B) Semi-Rigid.
The rigid rotor system is mechanically simple, but structurally complex because operating loads must be absorbed
a) In bending of the rotor blades rather than through hinges.
b) Through hinges and elastomeric bearings.
c) In tilting/bending of the mast.
A) In bending of the rotor blades rather than through hinges.
The main rotor blades of a fully articulated rotor system can
a) Lead/lag, flap, and feather collectively.
b) Lead/lag, flap, and feather independently of each other.
c) Lead/lag and flap individually, but can only feather collectively.
B) Lead/lag, flap, and feather independently of each other.
The purpose of the swashplate is to convert
a) Stationary control inputs from the pilot into rotating inputs which can be connected to the rotor blades or control surfaces.
b) Rotating control inputs from the pilot into stationary inputs which can be connected to the rotor blades or control surfaces.
c) Electronic control inputs from the pilot into analog inputs which can be connected to the rotor blades or control surfaces.
A) Stationary control inputs from the pilot into rotating inputs which can be connected to the rotor blades or control surfaces.
Two main parts of a swashplate are
a) Tilting and non-tilting.
b) Rotating and tilting.
c) Stationary and rotating.
C) Stationary and rotating.
What is the primary purpose of the free-wheeling unit?
a) To transmit engine power to the main rotor, tail rotor, generator/alternator, and other accessories.
b) To provide disengagement of the engine from the rotor system for autorotation purposes.
c) To provide speed reduction between the engine, main rotor system, and tail rotor system.
B) To provide disengagement of the engine from the rotor system for autorotation purposes.
What is the primary purpose of the tail rotor system?
a) Act as a rudder to assist in coordinated turns.
b) Counteract the torque effect of the engine driving the main rotor.
c) Maintain heading during forward flight.
B) Counteract the torque effect of the engine driving the main rotor.
The main rotor transmission is normally lubricated by
a) Its own oil supply.
b) Hydraulic fluid.
c) Engine oil.
A) Its own oil supply.
The primary purpose of the main rotor transmission is to
a) Increase engine output rpm to optimum rotor rpm.
b) Synchronize rotor rpm with engine rpm.
c) Reduce engine output rpm to optimum rotor rpm.
C) Reduce engine output rpm to optimum rotor rpm.
The fuel system is made up of two groups of components
a) The fuel supply system and the engine control system
b) The airframe fuel tank and the engine supply lines.
c) The fuel tank and the fuel control unit.
A) The fuel supply system and the engine control system
In accordance with 14 CFR 27.1337, fuel quantity indicators “must be calibrated to read ‘zero’ during level flight when the quantity of fuel remaining in the tank is equal to the unusable fuel supply.”
a) True.
b) False.
A) True
