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Texan > SYS - Ejection System > Flashcards

SYS - Ejection System Flashcards

1
Q

Ejection envelope of the seat?

A

Zero, zero, up to 35000ft and 370kts (within envelope of aircraft)

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2
Q

When must ejection seats be pinned?

A

Whenever canopy is not securely down and locked

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3
Q

Where is ejection seat pinned stowed when out?

A

Canopy latch handle

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4
Q

When use manual override handle to initiate pilot/seat separation? (2)

A
  • when automatic system fails

- if separation is desired above 14000-16000ft msl, such as in mountainous terrain

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5
Q

Can the manual override handle be used whilst seat is still in the aircraft?

A

No

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6
Q

Warning - when ejecting over mountainous terrain exceeding ________ ft MSL the manual override handle should be used to manually separate from the seat from and deploy the parachute.

A

8000ft

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7
Q

Three areas that secure the pilot to the ejection seat?

A
  • torso harness connected to the upper Koch fittings
  • lap belt connections
  • leg restraints
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8
Q

Where is the seat survival kit and how is it attached to you?

A

In the seat and attached through the lap belt assemblies

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9
Q

When is ELT automatically activated?

A

During seat separation

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10
Q

What may happen if your SSK is not connected?

A

Will not activate the ELT

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11
Q

Does the g suit hose go over or under the lap belt?

A

Over

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12
Q

Purpose of leg restraint garters?

A

Prevent legs from flailing during ejection

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13
Q

What is the PIRD?

A

Powered Inertia Retraction Device

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14
Q

Does the PIRD work similar to a car seatbelt?

A

Yes

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15
Q

What does the PIRD do during ejection?

A

Pulls the pilot back into the correct ejection position

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16
Q

What does the harness control lever do?

A

Allows between locked and unlocked. Locked will retract any slack and keep it there. Unlocked allows pilot to move forward and back freely.

17
Q

When would you operate in locked position?

A

Ejections or emergency landing

18
Q

Where are the parachute and risers packed?

A

Into the seats headbox

19
Q

How is the parachute deployed?

A

The container holding the parachute is ejected and a lid at the bottom opens to deploy the parachute

20
Q

What breaks the canopy?

A

The canopy fracturing system or the canopy breaker as a backup

21
Q

How long does emergency oxygen last for and can it be turned off?

A

10 min

No

22
Q

What does ISS stand for?

A

Intersect Sequencing System

23
Q

Three positions of the ISS switch?

A
  • CMD FWD
  • Both
  • Solo
24
Q

Explain what happens when ISS is both, solo and FWD CMD?

A

Both = both go regardless of who pulls. Rear goes first. If non-initiating seat has pin in it still goes.

Solo = each go independently and no sequencing

FWD CMD = rear seat commands rear only. Forward seat ejects both with rear going first

25
Q

When in Both or command forward what is the delay between rear seat going first and from seat?

A

0.37sec

26
Q

Does SSK lower from the seat during ejection?

A

Yes, 12ft line, either automatically or manually

27
Q

When in AUTO when does SSK release?

A

4 sec after seat separation

28
Q

When in manual, how release the SSK?

A

Kit Release handle

29
Q

How much space recommended between top,of helmet and canopy to ensure canopy breaker hits first?

A

At least one fist width

30
Q

Two stages of propellant during ejection are?

A
  • detonation of a gas propellant to initially move the seat up,the rails
  • ignition of a rocket motors as the seat reaches the top of the canopy rails
31
Q

How are the two seats separated from one another during ejection?

A

Asymmetric thrust on the rocket motors

32
Q

Should try to eject in a _______ or _______, __________ flight

A

Level
Climbing
Unaccelerated

33
Q

Three factors affecting ejection system performance?

A
  • dive angle
  • bank angle
  • sink rate
34
Q

Two different types of ejection?

A

Controlled and uncontrolled

35
Q

Min recommended heights for controlled and uncontrolled ejection

A

2000ft and 6000ft

36
Q

When considering bank angle, dive angle, and sink rate, what is a conservative way of calculating a safe ejection height?

A

Add up the three applicable minimum heights for the three individual conditions

37
Q

Time taken between handle pulled to parachute open?

A

4.37sec

38
Q

Two methods of pulling the handle?

A

Two fingers and two hands, or one hand

39
Q

During higher altitude ejections when does the head box deploy and parachute deploy?

A

Delayed until below 14000-16000ft MSL

Texan (19 decks)

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