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Flashcards in Aviation Deck (186)
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151

The flight envelope of an aircraft is

The region of altitude and airspeed in which it can be operated.

152

The locus of points equidistant from the upper and lower surfaces of an airfoil is called the

Mean camber line

153

The straight line joining the ends of the mean camber line is called the

Wing chord

154

A(n) _____ is the point at which the airflow over the wings ceases to be a smooth (laminar) flow and the wing starts to lose lift.

Aerodynamic stall

155

The two basic types of drag are

Parasitic and induced

156

An airfoil's efficiency, either a wing or a rotor blade, is _____ at high altitudes by the _____ air density.

Decreased, lesser

157

The degree of movement of an aircraft around is lateral axis is known as

Pitch

158

When the flaps are extended, the camber of the wing is

Increased

159

A helicopter's cyclic control is a mechanical linkage used to change the pitch of the main rotor blades

At a selected point in its circular pathway

160

When the rotor blades of a helicopter are spinning fast enough in a clockwise direction to generate lift, a phenomenon known as _____ causes the body of the helicopter to have a tendency to turn in a counter-clockwise direction.

Torque

161

Pulling back on the control column or joystick of a fixed-wing aircraft will cause the aircraft to

Pitch up

162

Contra-rotating propellers, a complex way of applying the maximum power of a single piston or turboprop aircraft engine, uses two propeller

Rotating in opposite directions arranged one behind the other

163

The abbreviation VTOL, applied to aircraft other than helicopters, means

Vertical Take-Off and Landing

164

Delta wing aircraft have a wing in the form of a triangle, named after the Greek uppercase letter delta, and no

Horizontal Stabilizer

165

The Visual Approach Slope Indicator (VASI) is a system of lights designed to provide visual descent guidance information to the pilot during a runway approach. The system uses _____ lights to indicate the upper limits of the glide path and _____ lights for the lower limits.

Red, white

166

A biplane has

Two wings arranged one above the other.

167

A coordinated turn (change of heading direction) includes both _____ of the airplane.

Roll and yaw

168

_____ is induced by use of a movable rudder controlled by _____ in the cockpit.

Yaw, rudder pedals

169

Moving the control column or joystick to the left or right affects the _____ rather than indicating the

Rate of roll, angle to which the aircraft will roll.

170

Which one of the following is NOT a flight instrument?

Tachometer

171

A flashing green ATC signal directed to an aircraft on the surface is a signal that the pilot

Is cleared to taxi.

172

What is the difference between a steady red and a flashing red light signal from the tower to an aircraft approaching to land?

A steady red light signals to continue circling and a flashing light signals that the airport is unsafe for landing.

173

The propeller blades are curved on one side and flat on the other side to

Produce thrust.

174

What makes an airplane turn?

Horizontal component of lift.

175

If the elevator trim tabs on a plane are lowered, the lane will tend to

Nose up

176

The pilot of an airplane can best detect the approach of a stall by the

Ineffectiveness of the ailerons and elevator.

177

What do "X's" on an airport diagram represent?

Closed runway

178

What is the propeller rotated by

the engine

179

What is the elevator trim tab

a small auxiliary control surface hinged at the trailing edge of the elevators

180

How does the elevator trim tab work

the elevator trim tab acts on the elevators which in turn act upon the entire plane