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On Deck
On deck, the plane rolls up to the section of
the catapult called the Y-gate. The Y-bar is used to center the front wheels up on the catapult.
Then, an operator raises the jet blast deflector (JBD) which is a section of the deck. The JBD shields the deck crew from jet exhaust and reinforces thrust.
The the plane is hooked to the catapult. The fully powered aircraft is held on the deck by a hold back-bar which releases when the catapult launches the plane.
How A Catapult Works
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