Wikiposts
Search
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.

Super cruise

Thread Tools
 
Search this Thread
 
Old 9th Aug 2007, 10:58
  #21 (permalink)  
 
Join Date: Jun 2004
Location: Green and Pleasant Land
Posts: 96
Likes: 0
Received 0 Likes on 0 Posts
Some ac can 'technically' supercruise, but this is very different to 'useful' supercruise. Some of the older ac mentioned here can (just....) creep past the mach given the right conditions (height, clean, good motors) but can't carry anything much offensive in this state - and turning rather spoils their supersonic day too.

The more modern stuff (some examples mentioned) can usefully supercruise. Some do this by (amongst other things) being less aerodynamically stable than legacy platforms and some do it by having a MASSIVE amount of dry thrust.

Ray :-)
Raymond Ginardon is offline  
Old 10th Aug 2007, 04:30
  #22 (permalink)  
 
Join Date: Feb 2007
Location: Australia
Posts: 35
Likes: 0
Received 0 Likes on 0 Posts
A little bird told me that the Pig can only supercruise in a shallow dive
During testing for the P109 introduction, the jet stayed at about M1.2 at F350 after thrust was reduced to mil.

One of the books on the Pig states that during testing back in the '60s, they got one supersonic at low level over the Nevada desert (so not really low level at all...) without burner - now that I find hard to believe, given the drag rise at about .98 and that they were using an A model.
Spaghetti Monster is offline  
Old 10th Aug 2007, 04:39
  #23 (permalink)  
 
Join Date: Apr 2002
Location: ecosse
Posts: 714
Likes: 0
Received 0 Likes on 0 Posts
I believe the Space Shuttle can, on re-entry, with the use of a 'puffer' engine for correction - even down to landing - might be wrong though
buoy15 is offline  
Old 10th Aug 2007, 04:53
  #24 (permalink)  
 
Join Date: Oct 2000
Location: Nomadic
Posts: 1,343
Likes: 0
Received 0 Likes on 0 Posts
F-111F with P-111+ engines (with CBs IN) can (Could) sustain M1+ in Mil. They needed Min A/B (As a minimum) to get over the hump as there was a noticeable M crit DRAG Hump to overcome (al be it briefly and with ease). The key was Wing sweep/ AoA management. As stated earlier - once you put a -131 pod/or AGM-130/GBU15 Data Link Pod or wing mounted stores on the beast, it would trickle below the number unless AB was engaged.


Dropping Hi Drag Mk 84 AIR's - (a relic of last century) at low level at supersonic speed was almost the most fun to have in aviation...


...and yes you definately needed Afterburner to do that, even in the F-111F.


...must close now - a tear is developing ....
L J R is offline  
Old 10th Aug 2007, 09:02
  #25 (permalink)  
 
Join Date: Aug 2005
Location: Bx
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
I've heard the Mirage 2000 can, too, but at very little over Mach 1 and it puts a lot of stress on the airframe (being more transonic than supersonic). Is this true?
In clean configuration. Just above mach 1. This doesn't make it a supercruiser. Supercruise is when the aircraft reach at least mach1.2/mach1.3.
TMor is offline  
Old 10th Aug 2007, 11:57
  #26 (permalink)  
 
Join Date: Feb 2007
Location: Exiled in England
Age: 48
Posts: 1,015
Likes: 0
Received 0 Likes on 0 Posts
And how is supercriuse going to help? At that speed the grobag might spill his gin and tonic
cornish-stormrider is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



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.