Aircraft Carriers II (Closed to posting)

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Equation

Lieutenant General
Afterburners are turned on when the jet is still on the deck.

You're right, the after burner was on when the jet was still on deck. It's just that when it turns up a sharp a high angle after leaving the carrier can one see the glow of the after burners.
 

bd popeye

The Last Jedi
VIP Professional
The USN always lights off the ABs while on deck. Could be the camera angle on that French Video.

[video=youtube;aIz9zAEeH6o]http://www.youtube.com/watch?v=aIz9zAEeH6o[/video]

[video=youtube;DxuMK2dIDJE]http://www.youtube.com/watch?v=DxuMK2dIDJE&feature=fvwrel[/video]
 

bd popeye

The Last Jedi
VIP Professional
My old brain just reminded me that it's is hard to see ABs in the day light..

This is why Naval aviators must practice landings until they leave the service. Nothing here is funny, especially if your ass is working that flight deck.

[video=youtube;0p85dJMsXIk]http://www.youtube.com/watch?v=0p85dJMsXIk&feature=related[/video]

[video=youtube;ttfYGWVw0_A]http://www.youtube.com/watch?v=ttfYGWVw0_A[/video]
 

Air Force Brat

Brigadier
Super Moderator
at 0.33, is it me or does it seems they only turn on the afterburner after the plane is in the air?

Actually I believe you can hear the burner lit while he is in the Chocks, but he selects full burner as he leaves the deck, the afterburner is not turned on, it is Lit or selected by advancing the throttle into the burner quadrant, the Brits I believe coined the term re-heat. Raw fuel is injected into the afterburner cans, which are located behind the normal hot section. Much like running NO2 in a recip engine, you don't just select it out of idle, but once you have reached near max thrust from engine itself, you will often see them pull it out of burner once a certain speed or altitude is reached as the max speed below 10,000 ft is 250kts, conversely if they leave it in full burner they will continue to pull the nose right on up through the climb to vertical or possibly beyond.
 
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jackliu

Banned Idiot
The USN always lights off the ABs while on deck. Could be the camera angle on that French Video.

I don't know man, look at it closely again, at 0.31-0.33 you can see the plane zip pass by, and you can see the glow of the engines as it move away from you, and at the time when afterburner was turned on, the angle was actually not directly facing you, so it should be harder to see from that.

And also, you can clearly see the left burner is turned on before the right one.

Something is fishy about this.
 

bd popeye

The Last Jedi
VIP Professional
Something is fishy about this.

The French have done thousands of catapult launches. Perhaps someone goofed...the pilot. Who knows for sure?

The USN has "Final checkers" to visually watch to make sure that AB has lit off and all the flaps, ailerons are working.. access panels are shut, tires are not flat etc etc etc . They check a lot of things. Watch the video.

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PACIFIC OCEAN (Oct. 26, 2010) Final checkers ensure an F/A 18C Hornet assigned to the Dambusters of Strike Fighter Squadron (VFA) 195 is in position before allowing it to launch from the aircraft carrier USS George Washington (CVN 73). This is the final time the Dambusters will fly off the flight deck of George Washington before transitioning to a Super Hornet airframe. George Washington is on its 2010 fall patrol in the western Pacific Ocean. (U.S. Navy photo by Mass Communication Specialist 3rd Class David A. Cox/Released)

[video=youtube;ERAVtdDhiPs]http://www.youtube.com/watch?v=ERAVtdDhiPs[/video]
 

jackliu

Banned Idiot
F-14 is probably the best carrier air craft of all time. It is ironic the only nation that still operating it is Iran.

I say we trade some spare part to them for oil, and have them directly ship to LA, it is getting really bad up here.
 

Air Force Brat

Brigadier
Super Moderator
The French have done thousands of catapult launches. Perhaps someone goofed...the pilot. Who knows for sure?

No one goofed, the afterburner sounds like its lit when the aircraft is still in the "chocks", before the cat launch, the afterburner has the same roar as a "blow torch" or ox/acetaline torch as the flame roars out of the tailpipe, and the pilot selects full burner as he leaves the ship to climb away. The afterburner is not "turned on" it is selected by advancing the Throttle past the max dry thrust detent, injecting raw fuel into the burner "can" where it ignites, increasing both heat and pressure, and thrust is increased by the nozzle itself. If the aircraft were carrying a full load, full burner would be selected initially, but we can tell that both aircraft are light by the robust and steep departure, whereas a fully loaded aircraft will appear to "lumber off" and may appear unable to climb at first and may even descend off the deck, and then "hopefully" climb away.
 
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