Aircraft Safety Equipment

Question 1

A parachute works by reducing the rate of descent of the user. Factors affecting the Rate of Descent include? (5)

Answer 1

• Weight of Parachute Suspended load
• Vent size
• Canopy size
• Density of air
• Vertical air currents

Question 2

Functions of Parachute (4)

Answer 2

• Descend the occupants of disabled A/C to earth safely
• Means of delivering men and material to the battlefield
• Dropping survival equipment
• Acts as a brake to reduce landing run of A/C

Question 3

Components of a Parachute (3)

Answer 3

• Pilot Chute: ensures a rapid and positive withdrawal of the main canopy from its folded state
• Suspension lines: absorb much of the shock load
• Harness: Secures parachute to wearer during opening shock descent without causing injury to wearer

Question 4

What is UWARS? (2)

Answer 4

• Automatic device to separate aircrew from the parachute upon immersion into water following bailout or ejection
• prevents drowning

Question 5

Classes of Liferafts (2)

Answer 5

• Single-Seat (for fighters)

- Multi-Seat (for heli and transports)

Question 6

Life Preserver Unit (LPU) (2)

Answer 6

• Designed to keep the wearer afloat subsequent to immersion in water
• Inflation by CO2 cylinder or oral inflation valve

Question 7

Aircrew Flying Helmet Functions (5)

Answer 7

• Head protection
• Aircrew communication
• Secures oxygen mask
• Shields against hot sun rays
• Soft Foam (not for Comfort)

Question 8

G-Forces (3)

Answer 8

• Velocity [Speed] is a component in determining the amount of g-forces experienced by a pilot.
• Positive G acts in the direction from head to toe and causes G-LOC. Negative G acts in the opposite direction and causes red-out.
• The Anti-G Suit protects against the effect of Positive G-Forces by applying counter pressure.

Question 9

Night Vision Goggles (2)

Answer 9

• Works by collecting tiny amounts of light within the lower portion of the infra-red light spectrum
• Will work in darkness, but not total darkness

Question 10

NVGs in the cockpit

Answer 10

-Conventional cockpit lighting emits a significant amount of light within the same wavelength range to which NVGs are sensitive, hence making them unsuitable for cockpit use

Question 11

Solution for NVGs to be use in the cockpit (3)

Answer 11

• Filters
• Alternative cockpit lighting with low infra-red component
• NVG compatible cockpit floodlighting
• Question is likely ‘which is NOT a solution?’