Sponsor Message:
Military Aviation & Space Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Mig-25/31 Top Speed  
User currently offlineTomh From United States of America, joined May 1999, 960 posts, RR: 2
Posted (13 years 7 months 10 hours ago) and read 7897 times:

Forum members are quick to point out that the MiG-25 and possibly the MiG-31 have the highest top speed of any operational fighter. Speeds close to Mach 3 are often claimed for these aircraft.

It is noteworthy that they are powered not by turbofans, but by Tumansky water-injected turbojets. To my knowledge, no recent Wesern fighters have tubojets or for that matter, water injection.

A couple of questions:

1. Is the powerplant technology on these aircraft the reason for their unmatched speed in an operational fighter? If so, why is it better than the more common turbofan? Did Tumansky develop a means to reduce or eliminate contrail generation, a feature likely to increase the aircraft's survivability?

2. The USA did not field the B-70 bomber in operational service. It was this aircraft that reportedly led to the development of the MiG-25. Why did Russia continue with operational deployment of an aircraft that possesses great top speed, but likely is lacking in the ability to engage in maneuvering air combat?

3. Regarding external weapons carriage by these aircraft. At very high speed, thermal limitations on the airframe must be respected, and the effects on weaponry must also be calculated. The performance of IR weapons in particular is likely to suffer in an elevated temperature invironment. Also, the increased drag on a missile at Mach 2.5+ would lessen the launch speed differential from the carrying platform unless a tremendously large booster were used. I pose these problems to question the ability of the MiG-25 to engage targets at its designed Mach limit. Any answers?

TomH


12 replies: All unread, jump to last
 
User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 9
Reply 1, posted (13 years 7 months 5 hours ago) and read 7688 times:

The MiG-25 is a great reconaicense (sp?) a/c, so that might be the reason they didn't cancel the program. The Foxbat could also be used to intercept conventional bombers like the B-52. Besides, the USSR liked setting world records.

I think the missiles on the MiG-25 are placed under the fuselage in a special semi-hidden compartment (it doesn't have any doors or anything, it keeps most of the missiles inside the fuselage).

LY744.




Pacifism only works if EVERYBODY practices it
User currently offlineFlight152 From United States of America, joined Nov 2000, 3413 posts, RR: 6
Reply 2, posted (13 years 7 months 1 hour ago) and read 7675 times:

One of the reasons for the Mig-25 devolpment was the mach 3 A-12 which became the SR-71. The Mig-25 was too slow and could not touch it. All missiles were to be kept externally on [4] pylons under the wings.

User currently offlineFlight152 From United States of America, joined Nov 2000, 3413 posts, RR: 6
Reply 3, posted (13 years 7 months 1 hour ago) and read 7671 times:

ooooh, also just wanted to say that the Mig-25 mach 3 performence was limited to minutes!

User currently offlineFly-By-Pilot From United States of America, joined Sep 2000, 209 posts, RR: 0
Reply 4, posted (13 years 6 months 4 weeks 1 day 23 hours ago) and read 7673 times:

I am pretty sure the Harrier uses alcohol/water injection.

User currently offlineTomH From United States of America, joined May 1999, 960 posts, RR: 2
Reply 5, posted (13 years 6 months 4 weeks 1 day 19 hours ago) and read 7662 times:

FlyBy,
I thought you were correct with the Harrier's Pegasus engine. But I checked my 1973 Jane's and they get into the Pegasus in detail. Still, I can't find mention of water injection in that tome. I'll look some more, as the Harrier sure would be a sensible candidate for water injection.
TomH


User currently offlineFireblade From Portugal, joined Feb 2006, 0 posts, RR: 0
Reply 6, posted (13 years 6 months 4 weeks 1 day 11 hours ago) and read 7665 times:

I'm not fan of these two aircraft but keep in mind
that mig-31 has the ZASLON the most powerfull radar
and the radars of four mig-31 work togather so they
could cover an area of 400sq km .With 4 mig 31 who need AWACS?


User currently offlineTomH From United States of America, joined May 1999, 960 posts, RR: 2
Reply 7, posted (13 years 6 months 4 weeks 1 day 1 hour ago) and read 7656 times:

Fireblade,

Wow, that's really interesting. So the MiG-31 radars link-up in some manner to provide a wider area coverage? I assume this is data-linked to a ground station for analysis and force control.

Regarding AWACS. How much loiter time do you think a MiG-31 has?

TomH


User currently offlineFly-By-Pilot From United States of America, joined Sep 2000, 209 posts, RR: 0
Reply 8, posted (13 years 6 months 4 weeks 1 day ago) and read 7652 times:

Hmmm, linking 4 planes together, sounds familiar. Could there of been some technology exange between Iran and USSR. Anyways, the F22 will take this ability to the next level. Russian fighters are awsome machines but they dont stack up against any comparable US weapon system.

User currently offlineBarfBag From India, joined Mar 2001, 2252 posts, RR: 6
Reply 9, posted (13 years 6 months 3 weeks 2 days 4 hours ago) and read 7626 times:

The engines of the MiG-25 are redlined at just over Mach 2.8 I think. They overspeed if the pilot tries to go any faster than that. As far as the SR71 vs MiG25 thing goes, check out http://siafdu.tripod.com/foxbat.html .

The Syrians or Egyptians flew a Foxbat over Israel that was clocked at Mach 3.3 but both engines burned out by the time the pilot landed in Egypt.

India has also used Foxbats from its Trisonics squadron for recce missions over Pakistan. http://siafdu.tripod.com/recce1.html




India, cricket junior and senior world champions
User currently offlineTomH From United States of America, joined May 1999, 960 posts, RR: 2
Reply 10, posted (13 years 6 months 3 weeks 1 day 21 hours ago) and read 7618 times:

Barf,

"As far as the SR71 vs MiG25 thing goes,"
If you are replying to my original post, be advised I never said a thing about the subject above. Perhaps you were looking at a different post?

TomH


User currently offlineBarfBag From India, joined Mar 2001, 2252 posts, RR: 6
Reply 11, posted (13 years 6 months 3 weeks 1 day 17 hours ago) and read 7615 times:

TomH,
Yeah, I guess I must have been reading one post too many. I didnt really read youre post right before my response; I just remembered an article about the Foxbat I read recently & remembered this question so I made a general response. thanks



India, cricket junior and senior world champions
User currently offlineSU508 From , joined Dec 1969, posts, RR:
Reply 12, posted (13 years 6 months 2 weeks 5 days 4 hours ago) and read 7582 times:

Mig-31 top speed is Mach 3.4
Mig-25 top speed is 3010 km/h.


Regards,


BBC_CCCP
RUS AF RULES!!!


Top Of Page
Forum Index

Reply To This Topic Mig-25/31 Top Speed
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Military aviation related posts only!
  • Not military related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Russian MiG-25 Foxbat Found Buried In Iraq posted Fri Jan 30 2004 00:45:40 by CanadianPilot
US Finds MiG-25 Buried In Iraq posted Thu Aug 7 2003 02:18:57 by Da man
Pics Of Earth From A MiG-25 Foxbat @ FL800 posted Wed Feb 26 2003 10:39:34 by Gotairbus
Mig-25/31 Top Speed posted Fri Jun 1 2001 13:44:09 by Tomh
Top Gun (movie) MIG Really A MIG? posted Fri Oct 13 2006 23:12:27 by Jorge1812
Mig-31 Firefox posted Fri Sep 7 2001 12:13:26 by Fireblade
Can The MIG-29 Fly Backwards? posted Thu Nov 16 2006 19:07:54 by DIJKKIJK
Fighter With The Highest Landing Speed. Which One? posted Thu Nov 9 2006 22:29:05 by Art
CEV Contractor To Be Announced 8/31 posted Mon Aug 28 2006 15:50:28 by DfwRevolution
MIG-28's posted Thu Jul 6 2006 06:38:44 by RampRat74

Sponsor Message:
Printer friendly format