View Full Version : Fast jet

15th Jan 2014, 19:59
Is there a definition of 'fast jet' or is it just any jet that happens to be fast? :)

15th Jan 2014, 22:21
800 kts+ at low level, M2.0+ at altitude I think ;)

15th Jan 2014, 22:30
Would a Hunter be a fast jet? Certainly doesn't meet Fox's criteria, but I'm sure a lot of Hunter jockeys would consider themselves to have been FJ pilots.

15th Jan 2014, 22:38
The last RAF Hunter pilot I knew had a patch which proudly described his jet as 'Last of the sports models'.

To my generation of course, this is a sports model


15th Jan 2014, 22:58
Is there a definition of 'fast jet' or is it just any jet that happens to be fast? http://images.ibsrv.net/ibsrv/res/src:www.pprune.org/get/images/smilies/smile.gif
It has to be relative.
The Hunter certainly was fast when compared to the Vampire, and the Lightning was even faster whilst the Blackbird topped the lot.

In years to come we might have a new standard.

15th Jan 2014, 23:09
Won't be this, I guess...


15th Jan 2014, 23:29
All jets are fast.......................when you first convert from pistons!http://images.ibsrv.net/ibsrv/res/src:www.pprune.org/get/images/smilies/smile.gif

15th Jan 2014, 23:50
Jet? What jet? Only one pic I'm looking at.


16th Jan 2014, 00:15
I believe the Hunter was the only FJ that could be spun, with any hope of recovery. Hopefully without banging out.

So it must be fast. As said on a previous post all relative.

16th Jan 2014, 01:32
It was about five years ago, would have been either October 2008 or Jan 2009, flying Virgin from SFO to LHR and the speech from the flight deck noted that we'd joined a fairly select group of people who'd travelled at over 800mph. Seems there was a stonking tailwind that day.

For someone sitting in the back, that made it a fast jet.

Loose rivets
16th Jan 2014, 01:38
Yes, I went over Geneva one day and proudly told my passengers that we were going faster over the ground than the speed of sound at this altitude.

It is possible one of the passengers understood the concept.:uhoh:

16th Jan 2014, 02:16
I was on one of those fast jets too doing a ground speed of 1,250km/h over Port Hedland. Man it was moving, and they even served drinks.

16th Jan 2014, 03:34
I've done 450mph in a Dornier 328 too, travelling Cambridge to Amsterdam back in the ScotAir days. That day we violated some natural law because we had a 100mph tailwind going (an hour's trip done in 45 minutes) and a 50mph tailwind coming back that evening as the weather systems shifted.

I guess that comes more under the "fast turboprop" thread though.

16th Jan 2014, 07:15
Simples. Small (<30 tons) and military = fast jet. Big and commercial = slow jet.

Lon More
16th Jan 2014, 07:50
Would a Hunter be a fast jet?
I remember requests for airway crossing often including the phrase "Fast Jet" Inevitably Hunters

TTN The cousins believed it was the F86 (http://www.175wg.ang.af.mil/news/story.asp?id=123205293)

16th Jan 2014, 08:16
Re Hunters, the Victor, on which I spent most of my time as a nav had similar performance figures to the Hunter in respective of max mach number when straight and level, and like the Hunter could go supersonic (just) in a shallow dive.

That said, by no stretch of imagination would you describe the Victor as a "fast jet"

Except when comparing it with its rather plodding stablemates in the V Force, of course ;)

Thanks Lon, btw.

16th Jan 2014, 08:20
Just to change the perspective a bit, what exactly would be a slow jet?

To me, a fast jet has afterburners and a top speed exceeding Mach 2.0. The rest are just jets.

Lightning Mate
16th Jan 2014, 09:41
This one's shifting.


Lightning Mate
16th Jan 2014, 10:26
Now you'll have everybody Goggling Prandtl–Glauert.

Of course, many will now shout Photoshop.

16th Jan 2014, 10:30
I did and interesting read.

I never knew that effect could be generated on take off by a FJ.

DX Wombat
16th Jan 2014, 10:34
TSR2 (http://en.wikipedia.org/wiki/BAC_TSR-2)


Lightning Mate
16th Jan 2014, 10:39

I wonder whose going to start on the expansion theory bit......

16th Jan 2014, 23:54
Concorde...Mach2 AND afterburners

Krystal n chips
17th Jan 2014, 05:53
" Not so much a cone of shame as a cone of vapour! "

Alas, you failed to say the rear cone was probably a 50 / 50 mix of water vapour.....and leaking fuel. Although this could ever so slightly disproportionate regarding the fuel......;)

Windy Militant
17th Jan 2014, 08:19
I never knew that effect could be generated on take off by a FJ.
It can also be generated by propeller tips I have some grainy shots taken at a damp Airshow at Brawdy of a Transall, I think which was trailing several turns of a Helix

Anyway back to the thread see here in the Crumblies home a really smashing picture of the Valkyrie.