Go Back  PPRuNe Forums > Aircrew Forums > Military Aviation
Reload this Page >

On a light note... Anyone done 1000mph?

Military Aviation A forum for the professionals who fly military hardware. Also for the backroom boys and girls who support the flying and maintain the equipment, and without whom nothing would ever leave the ground. All armies, navies and air forces of the world equally welcome here.

On a light note... Anyone done 1000mph?

Old 15th Jan 2015, 20:55
  #21 (permalink)  
 
Join Date: Sep 2001
Location: UK
Posts: 770
Likes: 0
Received 3 Likes on 2 Posts
The F-4K and M max IAS was, from memory, 750 kts at sea level but increased up to 810 at 11 000 ft (not sure why). Went along nicely at 750 KIAS at low level even with 2 tanks.

I will need to dig out the books but IIRC the F3 Vne was originally 800 KCAS (no tanks). Would be interested to know the dive angle for some of the higher speeds reached that are quoted above because when we did the clearance to 800 KCAS with 2 Skyflash and 4 AIM9s it was not that easy to get there.
LOMCEVAK is offline  
Old 15th Jan 2015, 21:20
  #22 (permalink)  
 
Join Date: May 2000
Location: UK
Posts: 4,333
Received 80 Likes on 32 Posts
My 870 was in K022+ at straight and level, at low level and with 2 large orange carrots hanging out the back - no dive required and the Skyflash fins weren't buzzing either!

LJ
Lima Juliet is offline  
Old 15th Jan 2015, 21:38
  #23 (permalink)  
Thread Starter
 
Join Date: Oct 2012
Location: UK
Posts: 1,785
Likes: 0
Received 0 Likes on 0 Posts
That would be "Gun" singular Leon.

OAP
Onceapilot is offline  
Old 15th Jan 2015, 21:41
  #24 (permalink)  
 
Join Date: Jun 2008
Location: London
Age: 67
Posts: 492
Likes: 0
Received 35 Likes on 12 Posts
I can't compete with LJ but did once have a go at the 810 kts at 11,000 ft in an A-fit FG1 (no tanks). I got it slightly wrong and ended up with 825 kts at 15,000. It was interesting to say the least, mainly because I hadn't given any thought to how I was going to slow down. I decided to try a gentle reduction to min burner for starters. Good decision, because even that produced a deceleration akin to taking a cable! Didn't try it again...
Fortissimo is online now  
Old 15th Jan 2015, 22:30
  #25 (permalink)  
 
Join Date: Oct 2009
Location: Land of Oz
Posts: 564
Received 9 Likes on 5 Posts
The F-111 was good for M1.2, about 810 on the deck.


At height for engine airtest, we would try to achieve M2.3 before the "BANG" of a compressor stall.
BBadanov is offline  
Old 15th Jan 2015, 22:38
  #26 (permalink)  
 
Join Date: Oct 2006
Location: The Great Midwest
Posts: 245
Likes: 0
Received 0 Likes on 0 Posts
Maximum allowable airspeed for these aircraft:

F-4C, D, E = 750 KIAS
F-14A = 780 KIAS
F-15C = 800 KIAS

Unfortunately I can't find my data for the MiG-23 but I believe it was above 800 KIAS as was the F-111 IIRC.

Normal bird strike requirement for the canopy on most aircraft about 450 KIAS for a 4 lb. bird. I always kept that little item in mind during high speed low level flight.

BBadanov you got there as I was posting.
Bevo is offline  
Old 15th Jan 2015, 22:41
  #27 (permalink)  
 
Join Date: Aug 2007
Location: Oz
Posts: 644
Likes: 0
Received 0 Likes on 0 Posts
BBadanov

Have heard of higher speeds being achieved post-AUP engine upgrade and in clean G-models, and of high 800s achieved at Red Flag.

An unnamed Nav has told me of a particular occasion where a piece of the wingbox fairing was missing and paint had peeled off the leading edge of the fin after a particular post mx flight test off the Sunshine Coast in the late 90s.

He also said the main speed limfac was windscreen temp?
FoxtrotAlpha18 is offline  
Old 15th Jan 2015, 22:46
  #28 (permalink)  
 
Join Date: May 2000
Location: UK
Posts: 4,333
Received 80 Likes on 32 Posts
Yes, windscreens were an issue. I remember a guy coming back with the central screen blacked out whilst he was going v fast IAS in the North Sea ACMI. He said he came home somewhat gingerly after that!

LJ
Lima Juliet is offline  
Old 15th Jan 2015, 22:48
  #29 (permalink)  
 
Join Date: May 2000
Location: UK
Posts: 4,333
Received 80 Likes on 32 Posts
I can't imagine that an Eagle would be a very comfortable beast at 800KIAS at low level - Buckaroo comes to mind!
Lima Juliet is offline  
Old 16th Jan 2015, 00:10
  #30 (permalink)  
O-P
 
Join Date: Aug 2008
Location: Virginia
Posts: 192
Likes: 0
Received 0 Likes on 0 Posts
As LJ states, the F3 HUD stops at 999kts...the TV tabs don't! The Irish sea was littered with fresh F3 paint after we'd picked them up and given them a quick "shake down".


A 'buddy of mine' was chasing down another 'buddy' on a "Day Tactics" sortie... guess which one was me! Anyway, it started at 30K and someone dived for the deck, passing 3000' yelps of "SPEED" were coming from some ones back seat. The HUD was in M and reading 1.8+ a quick flick to IAS revealed total horror (No we weren't vertical).


The ASRAAM seemed OK but the RAIDS pod was
O-P is offline  
Old 16th Jan 2015, 01:20
  #31 (permalink)  
 
Join Date: Apr 2001
Location: surfing, watching for sharks
Posts: 4,067
Received 43 Likes on 28 Posts
All you non hacking oxygen suckers...how about hovering...or flying backwards?

Guess we'll figure out who the Harrier lads are...
West Coast is offline  
Old 16th Jan 2015, 01:31
  #32 (permalink)  
 
Join Date: Jul 2003
Location: Near the coast
Posts: 2,360
Received 455 Likes on 120 Posts
On a light note... Anyone done 1000mph?

I once did a tail slide in a Hawk. Does that count as flying backwards?
I've done a stall turn as well.
I can't say I really planned to do either.
Never been 1000mph. Can't actually remember my fastest IAS in a Jag. Somewhere in the low 600s maybe? But I do know that in Oman when the F3s had their weeny tanks on they were limited to 0.9M and our tactic was to outrun them (0.95M limit for us!).
You have to take what you can get sometimes.
BV
Bob Viking is offline  
Old 16th Jan 2015, 01:35
  #33 (permalink)  
 
Join Date: Apr 2010
Location: Canada
Posts: 2,895
Likes: 0
Received 2 Likes on 2 Posts
You can't go backwards very fast in a Harrier

http://www.ukserials.com/pdflosses/m...0628_xw769.pdf
Fox3WheresMyBanana is offline  
Old 16th Jan 2015, 02:04
  #34 (permalink)  
 
Join Date: Apr 2001
Location: surfing, watching for sharks
Posts: 4,067
Received 43 Likes on 28 Posts
Bob V...you get a pass for the tail slide...was the seat pan missing after the ride? Hope you salvaged the skivvies?
West Coast is offline  
Old 16th Jan 2015, 02:46
  #35 (permalink)  
 
Join Date: Jul 2003
Location: Near the coast
Posts: 2,360
Received 455 Likes on 120 Posts
On a light note... Anyone done 1000mph?

A brief moment of panic followed by some heavy breathing. Luckily the Hawk reminded me on each such occasion that it'll let you get away with murder if you screw things up. Or your student does...
BV
Bob Viking is offline  
Old 16th Jan 2015, 04:38
  #36 (permalink)  
 
Join Date: Jul 2006
Location: by the Great Salt Lake, USA
Posts: 1,542
Likes: 0
Received 0 Likes on 0 Posts
F-8E SAC page 4: max speed S/L 651 knots; 35,000' 984 knots.
http://www.alternatewars.com/SAC/F-8..._July_1967.pdf


F-15C SAC page 4: max speed 35,000' 1,309 knots; 45,000' 1,340 knots
with CFTs: max speed 35,000' 1,124 knots; 45,000' 1,102 knots
http://www.alternatewars.com/SAC/F-1...ruary_1992.pdf


F-14A SAC page 4: max speed S/L 794 knots; 35,000' 1,170 knots.
http://www.alternatewars.com/SAC/F-1...April_1977.pdf


F-14D SAC page 4: max speed S/L 740 knots; 35,000' 1,196 knots.
http://www.alternatewars.com/SAC/F-1..._Declas%29.pdf
GreenKnight121 is offline  
Old 16th Jan 2015, 04:50
  #37 (permalink)  
 
Join Date: Sep 2006
Location: UK
Posts: 49
Likes: 0
Received 0 Likes on 0 Posts
As well as doing 1000kts, the F3 will also happily (well, relatively happily) do 0 kts. I learned about this when I once let my "experienced" Nav have a go at poling a twin-sticker:

Nav: "Can I have a go at some aeros?"
Me: "Sure. You have...."
Nav: "I have. Ok, I'll just try a loop to start with....."
Me: "Ok, stick the burners in, wait for 300kts & pull to 4g, then transition to 19 units over the top"

Nav pulls weakly to about 3g

Me: "Pull a bit more mate...."
As we reach the vertical:
Me: "Keep pulling"
Nav then slackens the pull
Me: "PULL!"
Followed by click, click as Nav brings throttles out of burner!

Me: "F*@k"
Nav: "You have control"
Me: "I doubt it"

As the airspeed decayed below 50 kts in the HUD, somewhere from the deep recesses of my brain, I remember hearing the U/P drill of "Centralise & let the aircraft fall out of the U/P". So I did. My QFIs would have been proud.

Everything went very quiet as the jet stopped, deciding whether to hammerhead or fall on it's back.....

Me (silently): "Please don't spin"

After what seemed like an eternity, it tailslid, then oh-so-gently pitched forward in a lovely (& completely unintended) hammerhead/ Su-27 "Cobra"-stylee manoeuver.

Fuel came out of the intakes in big clouds of vapour. I was pretty sure that wasn't supposed to happen.

The CWP lit up like a Christmas tree as various systems tripped offline... SPILS.... CSAS.... Pressurisation (!!?)....

.... but the thing kept flying & the engines kept turning. As the airspeed increased, presently there were enough Bernoullis going over enough control surfaces that the Lift Pixies resumed normal service.

We went home after that
ExAdvert is offline  
Old 16th Jan 2015, 05:25
  #38 (permalink)  
 
Join Date: Oct 2009
Location: Land of Oz
Posts: 564
Received 9 Likes on 5 Posts
Have heard of higher speeds being achieved post-AUP engine upgrade and in clean G-models, and of high 800s achieved at Red Flag.

An unnamed Nav has told me of a particular occasion where a piece of the wingbox fairing was missing and paint had peeled off the leading edge of the fin after a particular post mx flight test off the Sunshine Coast in the late 90s.

He also said the main speed limfac was windscreen temp?




F/A-18
Not sure, but possible. My time was with P3 and P103 engine. The G was I think P107, and AUP aircraft were P109. So probably better performance.


Yes windscreen temp was sometimes a limiter, but we did go through several windscreen mods too!
I have just been out boating today with a bunch of ex-111 (ex-Pig) mates, so sorry I couldn't consult them, but I do remember a rundown stopwatch triggered by skin temp - one of these guys remembers all the numbers - but it had something to do with 214 degrees (I think) and counted down from about 300 to 0 seconds (I think). Someone with more brain cells will remember !! Our young Oz UAV mate will remember the details...
BBadanov is offline  
Old 16th Jan 2015, 05:54
  #39 (permalink)  
 
Join Date: Jul 2006
Location: by the Great Salt Lake, USA
Posts: 1,542
Likes: 0
Received 0 Likes on 0 Posts
My time was with P3 and P103 engine. The G was I think P107, and AUP aircraft were P109. So probably better performance.
Not much.

TF30-3/103 10,750 lb (18,500 lb)
TF30-107 12,500 lb (20,350 lb)
TF30-109 12,000 lb (20,840 lb)


Too bad they weren't fitted with the engines from the F-111F...
TF30-100 15,000 lb (25,100 lb)
TF30-111 17,895 lb (25,111 lb)
GreenKnight121 is offline  
Old 16th Jan 2015, 06:37
  #40 (permalink)  
 
Join Date: May 1999
Location: Quite near 'An aerodrome somewhere in England'
Posts: 26,783
Received 257 Likes on 103 Posts
Leon, I gather that Bastard Bill tried to throw the book at the 'zoom merchant' to whom you refer, for exceeding the Release To Service limitations......

Until someone happened to mention the Lightning - and whether 'reheat rotations' were in the R to S. BB allegedly got the message and perhaps coincidentally the witch hunting stopped shortly afterwards, with a comment "Just don't do it again!".

All the above is anecdotal, I hasten to add.

ExAdvert, that reminds me of the time I saw rather more AoA than IAS in an F-4 after having gone vertical during aggressor training....I'd been looking over my shoulder and subconsciously pressing forward on the control column as we climbed , so that we went straight up rather than gently pitching over to the inverted as had been my intention! But the low speed recovery worked fine, no dramas at all...... The F-5 mate merely called "Are you coming down any time soon?"....
BEagle is online now  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.