F-16.net

Enthusiast Joined: Mar 17, 2008 Posts: 50 Status: Offline

I have been noting that the throttle of F-16 is different from others.....Not because it contains some switches over it, but because, they are engaged in a different way...For example, lets take the F-15 throttle....Afterburner is just lightened up if the throttle is just moved forward, but in F-16,.....Huh, I don't think that I am making any sense...Let the videos explain.....

1- http://www.youtube.com/watch?v=5wJhB0dZ_U0

Check out the Greek F-16's throttle from 1:21 to 1:26.....
He pulls up the throttle freely and then puts it down....Why so ??? and how does it work ????

2- http://www.youtube.com/watch?v=tZKVWtvgtoc

Check out the Paf F-16's throttle from 1:23 to 1: 25....
The throttle is moved from left to the normal position and then pushed forward.... How does it work ???

3- http://www.metacafe.com/watch/990587/gr ... con_part1/

Check out the movement of throttle from 0:23 to 0:25..... How and why does throttle moves this way ????

Thanx....

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Newbie Joined: Sep 21, 2008 Posts: 17 Status: Offline

The throttle is moved to the left, and foreward to engage the afterburner. The other functions im not sure about, but i'm pretty sure all are the same thing. Maybe other enlightened memeber of this forum will help you out. Smile

By the way those videos have some really good in-cockpit shots. Does anyone know of any similar videos that have great cockpit shots, preferably from the pilot's view? Personally i'd reccommend http://www.youtube.com/watch?v=X-0y3-bqNW8

Elite 1K Joined: Jan 31, 2004 Posts: 1576 Status: Offline

The first video shows the throttle being pushed to full AB. This is how it's done 99% of the time, especially on takeoff. Like triple said, you must rotate the grip outboard at or before the MIL power stop and push to go to the AB region. Don't know about the GE motor but the P&W motors I was familiar with had a 5-stage AB. When the throttle was pushed to full AB, the stages ignited sequentially and you felt the stages kick the jet as they light off. Also, you used to be able to pick how many stages lit by moving the throttle only part of the way to full AB and counting the kicks. Again, don't know if that's still true with either engine model or if it's even recommended.

The last 2 videos show the throttle being moved out of the cutoff region and into idle during engine start. This movement starts fuel flowing to the engine. You have to rotate the grip outboard to clear the cutoff gate, push it forward a bit to exit cutoff, drop the grip, and then pull it back to idle for the engine to continue with the start. Takes less than 2 seconds (the move outta cutoff, not the engine start). To move it back to cutoff, you bring it to idle, pull the cutoff trigger with your pinky finger, rotate the grip outboard, and pull it into cutoff. This kills fuel flow and the engine shuts down (just make sure that EPU safing pin is installed beforehand! Wink

). The cutoff trigger can be pulled at any point in the throttle's range of travel allowing immediate transition to cutoff without stopping at idle if called for, like when attempting a airborne restart after a flameout.

PW-229 has 11 stage AB, not 5, just so smooth you really hear and feel no transition, just smooth, progressive power.

Elite 1K Joined: Jan 31, 2004 Posts: 1576 Status: Offline

11? Yikes! I left the Viper world when the 220E was the NKOTB, so I've been outta the loop for while.

Elite 2K Joined: Jan 14, 2004 Posts: 2887 Status: Offline

IIRC, with the Eagle, you move the throttles forward to full mill, then outboard slightly to the left, and then fwd again to light the 'burners. Same as the F-4. This is to prevent accidentally going into augmentor.

TC wrote:

This is to prevent accidentally going into augmentor.

When everything is working correctly, TC is exactly correct.

I think every modern engine with an augmentor/afterburner/reheat, has some sort of throttle detent, gate, or lift that needs to be negotiated to exceed MIL power.

Quote:

Detent (de-tent) -noun Machinery; a mechanism that temporarily keeps one part in a certain position relative to that of another, and can be released by applying force to one of the parts.

Mis-rig the throttle or PLA (Power Lever Angle) input on the MFC (Main Fuel Control) and you can hit MIN-AUG when pushing the throttle against the MIL stop.

Then again, your engine may leak fuel or continue to run at shut-down if the mis-rig is bad enough...

The devil is in the details! Doh

Keep 'em flyin' Thumb

TEG

Elite 2K Joined: Jan 14, 2004 Posts: 2887 Status: Offline

I know back in the 80s, there were a couple notable Blk. 10 or 15 Viper mishaps on the ground, and involving a stuck throttle. I can't remember what the cause was, however. It has been mentioned from time to time on this site, however.

Enthusiast Joined: Sep 26, 2006 Posts: 29 Status: Offline

JetTest wrote:

PW-229 has 11 stage AB, not 5, just so smooth you really hear and feel no transition, just smooth, progressive power.

On GE throttle operates the same. Engine has no AB stages however, just increase in fuel flow from min to max aug. Oh, plus burying you into the back of the seat!!! Applause

On the F-105 and F-106 fore and aft movement of the throttle controlled the engine speed and above 85% power you could move the throttle outboard to select afterburner. AB was either all the way on or all the way off. You could modulate engine speed between 85-100% in burner, but not burner itself.

Try as I might, I never could get the AB on an A-7 to light off!

Just thought you'd like to know...

Elite 1K Joined: May 26, 2005 Posts: 1160

Quote:

Try as I might, I never could get the AB on an A-7 to light off!

Elite 2K Joined: Jan 14, 2004 Posts: 2887 Status: Offline

SixerViper wrote:

Try as I might, I never could get the AB on an A-7 to light off!

Not quite the same kick in the pants that lighting the pipe on the Ultra Lead Sled was, was it? Laughing

Elite 1K Joined: Apr 26, 2004 Posts: 1215 Status: Offline

SixerViper wrote:

On the F-105 and F-106 fore and aft movement of the throttle controlled the engine speed and above 85% power you could move the throttle outboard to select afterburner. AB was either all the way on or all the way off. You could modulate engine speed between 85-100% in burner, but not burner itself.

Try as I might, I never could get the AB on an A-7 to light off!

Just thought you'd like to know...

Sixer you are too much....!!!!!! Thanks for the smile you put on my face, now I just need to be sure and not check the stock market today...!!

Obscure point, but the Pratt engined A-7F had an AB.

Some Vought guy got to fly a Mach 1.6 SLUF. I think it outran its own moving map.

Funny, it looked pretty much like an F-8.

regards, OL

Enthusiast Joined: Feb 01, 2008 Posts: 88 Status: Offline

Hey outlaw, did it have the pointy nose like the F-8?
Part of Slufs experience was that truck-driver feel (sittin' on the edge, with no nose)!!

F-16.net

Forum: F-16 Procedures

The functioning of the throttle