Army Aviation Practice 2 Flashcards
What is Nap-of-the-Earth (NOE) flight conducted for?
It is a military flight mode designed to minimize detection by enemy forces or systems.
The 3 axes around which flight movement occurs are:
Lateral, longitudinal, and vertical
The amount of an airfoil’s curvature is called:
It’s camber
Earth’s atmosphere is composed of ___% nitrogen, ___% oxygen, ___% other gases
78% nitrogen, 21% oxygen, and 1% other gases
A lighted heliport can be identified by:
A white, yellow, and green rotating beacon
The best way to perform a quick stop is to:
Lower the collective and pull back on the cyclic
The collection of factors that facilitates maximum helicopter performance is:
Low altitude, low temperature, and low humidity
The cyclic controls:
The direction of the tilt of the main rotor
Moving the cyclic forward and significantly raising the collective will cause the helicopter to:
Increase its forward speed and begin to climb
Conventional American helicopters have a main rotor that:
Turns in a counterclockwise direction
What is translational lift?
The additional lift gained when the helicopter leaves its downwash
On a helicopter, a governor is a device that:
Senses rotor and engine RPMs and makes adjustments to keep rotor RPMS constant
What is a correlator?
A mechanical connection between the collective lever and the engine throttle
The antitorque pedals, located on the cabin floor by the pilot’s feet, control the ___1)__ and therefore the __2)___ of the tail rotor blades or other antitorque system
1) Pitch, 2) thrust
What are the 3 types of main rotor systems?
- Rigid, 2. semi-rigid, 3. fully articulated
On a typical helicopter airspeed indicator a green arc indicates:
The aircraft’s normal operating speed range
More power is required during _________than any other helicopter flight regime
Hovering
The 3 major factors that affect helicopter performance are:
- Density altitude, 2. weight, 3. wind
The 4 fundamentals of flight on which all maneuvers are based are:
- Straight and level flight, turns, 2. climbs, and 3. descents
Hover height, rate of ascent, and rate of descent of a helicopter are controlled with:
The collective
Helicopter position and direction of travel are controlled by the:
Cyclic
The helicopter pilot can use the pedals to control:
Heading, direction of turn, and rate of turn at hover
