SYS 209 - Canopy System

Question 1

What are the 4 main components of the canopy system?

Answer 1

Canopy frame assembly, fwd windscreen, fwd ckpt transparency, rear ckpt transparency

Question 2

Which parts of the canopy have birdstrike protection w/ thicker glass?

Answer 2

Fwd windscreen, fwd ckpt transparency

Question 3

What type of birdstrike is the T-6A built to withstand?

Answer 3

4-pound birdstrike at up to 270 KIAS

Question 4

What are the sub-systems of the canopy frame assembly

Answer 4

1,Hinge/strut system

2. locking/latching system
3. sealing system
4. CFS

Question 5

What is the purpose of the hinge/strut system, and how does it work?

Answer 5

Enable a single operator to move the canopy using about 30lbs of force & bear most of the canopy’s weight 🡪 oil-filled struts attached to hinged (right) side of canopy provide mechanical advantage

Question 6

How many hooks engage w/ catches in slots on the canopy sill to fully close/lock canopy?

Answer 6

5 hooks on canopy frame

Question 7

What verifies the latched condition of the canopy, extinguishing the CANOPY annunciator?

Answer 7

Electrical microswitches on 3 of the latches, 1 on the canopy sill at the fwd edge of the canopy

Question 8

What does the canopy sealing system contain?

Answer 8

Non-inflatable weather seal (bottom), inflatable pressure seal (top) that loop around the entire canopy perimeter

Question 9

When does the one-piece seamless pressure seal inflate and how does it work?

Answer 9

Pneumatically using cooled engine bleed air from the anti-G system; automatically when bleed air inflow is available and weight off R main LDG gear

Question 10

Where must the bleed air inflow switch be for canopy seal to operate?

Answer 10

NORM, HI

Question 11

When should you not open the canopy?

Answer 11

Wind exceeds 40 knots

Question 12

When is the canopy’s latch mechanism considered properly engaged?

Answer 12

The hooks must be in position, connecting rod fully extended, lock latched against the lock plate

Question 13

How do you know the canopy is closed & latched?

Answer 13

CANOPY annunciator extinguishes; mechanical green indicators visible

Question 14

T/F: The CFS is engaged only for the transparency under which it was activated.

Answer 14

True

Question 15

How do you pull the CFS handle?

Answer 15

Pull out safety pin 🡪 rotate CFS handle 90 degrees CCW 🡪 pull up using 15-25lbs of force

Question 16

Which CFS handles are inoperative, and where are they located?

Answer 16

External CFS handles, found behind lockable doors on either side of the fuselage (must remain closed & locked)

Question 17

T/F: The CFS requires external or electrical power to operate.

Answer 17

False

Question 18

What kind of charge does the fwd transparency use?

Answer 18

Flexible Linear Shaped Charge (FLSC) for thicker glass lined around periphery and down centerline

Question 19

What kind of charge does the rear transparency use?

Answer 19

Mild detonation cord (MDC) lined around periphery & in diamond pattern along centerline

Question 20

How does the CFS work (up to acceptor assembly)?

Answer 20

Pull handle 🡪 piezoelectric crystals produce electric charge 🡪 fire flash lamps 🡪 light source to excite laser rod 🡪 activates optical detonator mounted on the canopy sill 🡪 fires plunger into the CFS acceptor assembly mounted on canopy

Question 21

How does the CFS work after the fire plungers are sent into the acceptor assembly?

Answer 21

Plungers in acceptor assemblies 🡪 activate shielded mild detonating cords along rear edge of the canopy 🡪 detonates CFS explosive cords