Flight Controls and Rotor

Question 1

The ___________ operates the fore, aft, and lateral control systems.

Answer 1

cyclic pitch control stick

Question 2

The _______________ is located near the aft end of the tail boom. The pitch angle of the left side of the elevator is lower than the right side.

Answer 2

synchronized elevator

Question 3

The dual purpose of the elevator is to ____________ and __________________ in the pitch axis stationary swashplate.

Answer 3

lengthen C.G.; increase controllability

Question 4

Failure of the elevator will cause a _____________ which is more abrupt at high speeds.

Answer 4

nose down pitching

Question 5

The ___________ take cyclic input (pitch & roll) and creates inputs to the cyclic servos.

Answer 5

mixing unit

Question 6

The _________ of the swashplate, driven by the drive links, transmits cyclic inputs to the scissors.

Answer 6

rotating portion

Question 7

The ___________ are the attachment point of the flight control tube to the stationary swashplate.

Answer 7

trunnion bearings

Question 8

The _________ is located at the base of the cyclic and is adjusted by hand tightening to the desired friction.

Answer 8

cyclic friction

Question 9

__________ acts to furnish a force gradient or “feel” to the cyclic control stick and tail rotor pedals

Answer 9

Force trim

Question 10

There are ___ spring magnetic brakes that are used to trim the aircraft. All are controlled by a single switch on the Pilot or Copilot cyclic stick and on the center console’s force trim panel. The spring and magnetic brakes are used in the pitch, roll, and yaw axis.

Answer 10

3

Question 11

The _____________ moves the collective sleeve, which transmits inputs to the scissors.

Answer 11

swashplate lever

Question 12

Name the 3 axis the helicopter flight controls system affects.

Answer 12

Pitch, roll, yaw

Question 13

The control forces are reduced to near zero lbs of force by the __________.

Answer 13

hydraulic servo cylinders

Question 14

The main rotor is a _______, _______, ________, _________ and __________. The blades are bonded (metal to metal) and interchangeable.

Answer 14

2 bladed, semirigid, flapping type, employing preconing and under-slinging

Question 15

Rotor blades are made from _____________, bonded metal to metal, and taper to a thin airfoil.

Answer 15

honeycomb core construction

Question 16

The blade skin raised above the normal level, indicates ___________ and/or ___________.

Answer 16

skin delamination

corrosion

Question 17

The trim tabs (__ on each main rotor blade) affect the track of the blades.

Answer 17

1

Question 18

The rotor blade tip is used for ______ and ______. Rotor blades can droop to within ___ of the ground on level ground.

Answer 18

tiedown; tracking

5 ft

Question 19

Starting and stopping the rotor with surface winds above _____ is prohibited.

Answer 19

45 kts

Question 20

They combine inputs from the control tubes and stabilizer bar, enabling transmission to the rotor.

Answer 20

Mixing Levers

Question 21

____________ are attached to the mast below the rotor and regulate the mast following characteristics of the stabilizer bar.

Answer 21

Hydraulic dampers

Question 22

Timing of the damper is approximately ______, providing the ambient temperature is between ____ to ____, and normally within ____ of each other.

Answer 22

5 ±1 sec

45°F to 100°F

1 sec

Question 23

Damper timing is also affected by __________.

Answer 23

temperature

Question 24

The ________ is a separate and independent hydraulic system.

Answer 24

rotor brake

Question 25

When the brake is applied a segment on the caution panel illuminates. The ROTOR BRAKE caution light illuminates at _____, and extinguishes as pressure drops below _____.

Answer 25

10 psi; 5 psi

Question 26

The timing of the hydraulic damper is __________ sec.

Answer 26

5 ±1

Question 27

The tail rotor and hub is a _______ system. It is semi-rigid and employs preconing and under-slinging.

Answer 27

tractor-type

Question 28

A rod through the gearbox is attached to the _______. The ________ movement changes pitch in both blades equally.

Answer 28

crosshead

Question 29

T/F:

The pedal adjusters are located at the base of the instrument panel directly forward of the Pilot and Copilot positions.

Answer 29

True

Question 30

In the event of a Main Rotor Malfunction, what is the most appropriate action?

Answer 30

Land as soon as possible (Land immediately if severity of malfunction dictates)

Question 31

When complete loss of the tail rotor thrust (uncontrollable) occurs, what is the most appropriate action?

Answer 31

AUTOROTATE, THROTTLES FLIGHT-IDLE