Structure & AVCS

Question 1

Overall length

Answer 1

41.47 ft

Question 2

Nose to tail length

Answer 2

35.03 ft

Question 3

MR diameter

Answer 3

35.07 ft

Question 4

Overall height

Answer 4

11.84 ft

Question 5

Stinger height

Answer 5

1.93 ft

Question 6

MR rigging

Answer 6

2 deg forward

Question 7

TR diameter

Answer 7

3.28 ft

Question 8

What are the main components of the fuselage?

Answer 8

1. canopy
2. main structure (bottom structure/cabin floor, body/rear structure)
3. aft structure (tail boom, horizontal stab, Fenestron)

Question 9

What are the 2 types of composite structure?

Answer 9

1. Monolithic - laminated materials produced from thermosetting resins and reinforcing materials
2. Sandwich structure - laminated panels made of honeycomb core between two skins of pre-impregnated layers of fabric

Question 10

What is the only stainless steel piece on the airframe?

Answer 10

Engine deck, top of the rear structure

Question 11

Name a few components made of light alloy

Answer 11

Doors
Body Structure
Rear Structure
Landing Gear
Tail Boom
Horizontal Stabs
Height shield on TR drive cover
Cowling around swashplates

Question 12

Name a few components made of Composites, and what might those composite be?

Answer 12

Composites: glass/carbon honeycomb, sandwich structure

Lower fairings
Canopy
Upper cowlings (air intake, MGB and Engine cowlings)
Fenestron and vertical fin

Question 13

What are the 2 pieces made specifically of glass/carbon fiber composite?

Answer 13

Landing gear fairings
Forward/Rear sections of TR drive shaft cover

Question 14

What is the strongest part of the airframe?

Answer 14

Rigid box or Rigid hexahedron

Question 15

What are the bonded windshield panels made of?

Answer 15

Plexiglass

Question 16

What are the roof windows made of?

Answer 16

Makrolon

Question 17

What are the lower windows made of?

Answer 17

Transparent Polycarbonate

Question 18

Describe the door light system

Answer 18

The cargo doors have micro-switches which inform the pilot when one or both lateral doors are not correctly closed.

Question 19

What is the procedure if the (DOOR) light illuminates?

Answer 19

1. Vne 70kts
2. Land as Soon as Practicable
3. Descent and approach at low descent rate

Question 20

Describe the energy absorbing system in the seats

Answer 20

• When the G loads exceed 6G, the steel plate securing the spring breaks.
• The spring becomes the only link between the bucket and the lower part of the seat.
• The spring absorbs the energy and protects the pilot.
• Therefore, never stow anything under the seats.

Question 21

Wha does AVCS stand for?
Which airframe does it apply to?

Answer 21

T2 Active Vibration Control System

Question 22

What is the purpose of the AVCS?

Answer 22

Designed to reduce intensity of vertical vibrations caused by harmonic airframe motion excited by the MR
- to increase pilots/passengers comfort

Question 23

With AVCS - ON, what is happening?

Answer 23

The computer is running an algorithm to analyze the vibrations and send commands to the actuators located throughout the aircraft
- actuators mechanically create “anti-vibration” forces to stop the progression of vibrations caused by the MR

Question 24

How does the AVCS work, step-by-step?

Answer 24

1. Vibrations are detected by accelerometers
2. Information sent to the computer
3. Computer calculates reverse vibrations
4. Information sent to the actuators
5. Actuators mechanically create “anti-vibrations”

Question 25

What are the components of the AVCS?

Answer 25

5 accelerometers (ACC)
4 active vibration control actuators (AVCA)
1 rotor speed sensor (RSS)
The active vibration control computer and power amplifier (AVCCPA)