Allesmor Obranna Posted October 29, 2014 Share Posted October 29, 2014 In Hungary, 1988. 05. 23, Lt. Col György Dózsa test pilot during an after-major overhaul test flight (the high altitude test) reached the 19500m level with the bort No.1889 plane. The 75AP's official ceiling height is ~17000m. Have you ever heard a hight altitude with this version than this? Do you have info about the serbian, croatian, polish, ex-soviet air forces experience? (In the very first era, 1961-62, during the service entry test flights there were 23000m and Mach 2.35 with the MiG-21F-13 in the Hungarian airspace. But the F-13 and the PF were much lighter and cleaner version, than the bis). Link to comment Share on other sites More sharing options...
anlq Posted October 30, 2014 Share Posted October 30, 2014 2 days ago I tried a mission with 3 fuel tanks. I climbed to 14.500m. To save fuel I don't use afterburner below 8000m, that's the best result personally. I guess I should take less fuel, maybe 1 center drop tank. Link to comment Share on other sites More sharing options...
Fri13 Posted January 30, 2015 Share Posted January 30, 2015 In Hungary, 1988. 05. 23, Lt. Col György Dózsa test pilot during an after-major overhaul test flight (the high altitude test) reached the 19500m level with the bort No.1889 plane. The 75AP's official ceiling height is ~17000m. Have you ever heard a hight altitude with this version than this? Do you have info about the serbian, croatian, polish, ex-soviet air forces experience? (In the very first era, 1961-62, during the service entry test flights there were 23000m and Mach 2.35 with the MiG-21F-13 in the Hungarian airspace. But the F-13 and the PF were much lighter and cleaner version, than the bis). Finnish testpilots made flights often over 20 000m (usually 18 000m) and Jyrki Laukkanen had own record to reach 21 300m altitude. And some info is about 2.05 Mach at 22 500m. This with Mig-21F-13. i7-8700k, 32GB 2666Mhz DDR4, 2x 2080S SLI 8GB, Oculus Rift S. i7-8700k, 16GB 2666Mhz DDR4, 1080Ti 11GB, 27" 4K, 65" HDR 4K. Link to comment Share on other sites More sharing options...
Manuel_108 Posted January 30, 2015 Share Posted January 30, 2015 That wouldn't work in DCS where the AoA is ridiculous at high altitudes. Link to comment Share on other sites More sharing options...
Justin Case Posted January 30, 2015 Share Posted January 30, 2015 I usually get a flameout somewhere after 21 500 meters... http://www.masterarms.se A Swedish Combat Flight Simulator Community. Link to comment Share on other sites More sharing options...
effte Posted January 30, 2015 Share Posted January 30, 2015 (edited) And those altitudes aren't difficult to achieve, if you fly a profile by the book. Edited January 31, 2015 by effte ----- Introduction to UTM/MGRS - Trying to get your head around what trim is, how it works and how to use it? - DCS helos vs the real world. Link to comment Share on other sites More sharing options...
Kobymaru Posted January 30, 2015 Share Posted January 30, 2015 If you go that high, can you go over mach 1 without the afterburner? Link to comment Share on other sites More sharing options...
Retu81 Posted January 30, 2015 Share Posted January 30, 2015 Best way to try new altitude records is to climb to 10000 meters first. Once there, accelerate to Mach 1.8 or thereabouts then start climbing while maintaining that speed. The result: Link to comment Share on other sites More sharing options...
atsmith6 Posted January 30, 2015 Share Posted January 30, 2015 (edited) So there I was at 65616ft, or 20000m, as you prefer... Edited January 30, 2015 by atsmith6 Link to comment Share on other sites More sharing options...
effte Posted January 31, 2015 Share Posted January 31, 2015 (edited) Intercept profile by the book: Accelerate after start to reach 950 km/h TAS by 1000 m. Maintain TAS until 10,000 m. Accelerate to 1200 km/h IAS and maintain until M1.9, which is then used for the rest of the climb. The acceleration at 10,000 feels slow as molasses initially, but once past 1000 km/h the engine can breathe happily again and things start happening. Reheat from the get-go. Cheers, /Fred Edited January 31, 2015 by effte IAS after acceleration at 10k + bloody anglosaxons who can't get their decimal points straight. :D ----- Introduction to UTM/MGRS - Trying to get your head around what trim is, how it works and how to use it? - DCS helos vs the real world. Link to comment Share on other sites More sharing options...
EngineerFalcon Posted February 1, 2015 Share Posted February 1, 2015 Just did a quick test, managed to climb up to 21 406m according to SARPP. I need to save more fuel though, had to land in someone's garden. That landing gear is surprisingly tough. I usually get a flameout somewhere after 21 500 meters... The same thing happened to me, I couldn't restart it until I got much lower. Link to comment Share on other sites More sharing options...
Priller Posted February 1, 2015 Share Posted February 1, 2015 Can you guys try testing altitude by flying to about 6 or 7km on mil power. Level off and accelerate until high mach then start the climb? [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
ttaylor0024 Posted February 2, 2015 Share Posted February 2, 2015 (edited) What I normally do is climb to about 8,000m, accelerate, climb to 12,000m, accelerate to m2.05, then pitch for a 45* climb. You can get it up to about 25,000m or so if I remember correctly. Don't worry about fuel, you don't burn anything really at those altitudes, and your engine will flame out anyway because of the altitude. The F-4 that climbed to 95,000ft or whatever accelerated to max speed at 25,000ft, then pitched for 45* so that's what I based my trial on. EDIT: Re-tried this method to see if I remembered correct or not. It goes pretty high. 88,662ft (27,024m) This is for a fun, max zoom-climb though. I'm not sure the actual max cruising altitudes, but the best altitude for maximum speed is about 12,350m according to my experiences. Edited February 2, 2015 by ttaylor0024 Link to comment Share on other sites More sharing options...
Priller Posted February 2, 2015 Share Posted February 2, 2015 What I normally do is climb to about 8,000m, accelerate, climb to 12,000m, accelerate to m2.05, then pitch for a 45* climb. You can get it up to about 25,000m or so if I remember correctly. Don't worry about fuel, you don't burn anything really at those altitudes, and your engine will flame out anyway because of the altitude. The F-4 that climbed to 95,000ft or whatever accelerated to max speed at 25,000ft, then pitched for 45* so that's what I based my trial on. EDIT: Re-tried this method to see if I remembered correct or not. It goes pretty high. 88,662ft (27,024m) This is for a fun, max zoom-climb though. I'm not sure the actual max cruising altitudes, but the best altitude for maximum speed is about 12,350m according to my experiences. If you took a total of 6 A-A missiles with 1 large drop tank. Carry the tank to 5km, then release it and only used mil power from there on out, how high can you get the 21? [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
ttaylor0024 Posted February 2, 2015 Share Posted February 2, 2015 If you took a total of 6 A-A missiles with 1 large drop tank. Carry the tank to 5km, then release it and only used mil power from there on out, how high can you get the 21? You could pretty easily carry the drop tank to 12,000m, I've done it before, it just takes forever. I haven't tested your configuration, but I would assume the max zoom climb to be around 20,000m, max cruise around 14,000m, and max mach around 11,000m Link to comment Share on other sites More sharing options...
Luzifer Posted February 2, 2015 Share Posted February 2, 2015 I've been doing a couple of high climbs on the VA server in December. Not really zooming at the end, but the AoA gets really high at that altitude. Actually trying to deal with the AoA may have caused me to do a few inadvertent zooms... I went with the bare 21, no external tanks. Afterburner continuously on from take-off, climb around 700 km/h until 8000 to 10000 m (before M0.9 would be best I think) then shallow dive to go supersonic (at least M1.2) and continue climb until it goes no further. It's pretty easy. Screenshot shows me descending shortly after flame-out at 23430 m. More than half the fuel left for a leisurely flight home after restarting the engine below 10000 m. Link to comment Share on other sites More sharing options...
TurboHog Posted February 2, 2015 Share Posted February 2, 2015 (edited) My best is exactly 25000 m. That is with 4 missiles... 15000 m, Mach 2.05 - Zoom climb. I actually got higher as you can tell from the vs gauge... Edited February 2, 2015 by TurboHog 'Frett' Link to comment Share on other sites More sharing options...
Truga Posted February 3, 2015 Share Posted February 3, 2015 http://udba.org/dcs/Screen_141115_003555.jpg 25300 is my personal best for now. :pilotfly: Note that the engine flames out at some 22km, so the trick is having as much vertical speed as possible at that point. Link to comment Share on other sites More sharing options...
panzerd18 Posted February 3, 2015 Share Posted February 3, 2015 On my first run, I got to 22,700m! Link to comment Share on other sites More sharing options...
FoReIgNeR Posted February 3, 2015 Share Posted February 3, 2015 My altitude record in the 21 is somewhere around 90,000ft. Procedure: climb to 14km (clean configuration), accelerate to ~ Mach 2.1 (the lighter the better) switch on second reheat stage (emergency afterburner), point the nose upwards and soar towards the stars =) [sIGPIC][/sIGPIC] Limitless Aerobatics Team Facebook Link to comment Share on other sites More sharing options...
Stealth_HR Posted February 3, 2015 Share Posted February 3, 2015 That doesn't sound right. The second reheat stage doesn't (or rather, shouldn't) work above 4000m AGL. At least - that's how i remember it should be, and I'd never been able to activate it above said altitude. [sIGPIC][/sIGPIC] Real men fly ground attack :pilotfly: where EVERYTHING wants a piece of you :D Link to comment Share on other sites More sharing options...
Truga Posted February 3, 2015 Share Posted February 3, 2015 Yeah, 2nd stage reheat doesn't even engage above 4km, and will shut itself off automagically if you climb past 4km with it on. Link to comment Share on other sites More sharing options...
OnlyforDCS Posted February 3, 2015 Share Posted February 3, 2015 If you go that high, can you go over mach 1 without the afterburner? I dont have the Mig (yet!) but that should not be possible (unless you are in a dive). Current specs: Windows 10 Home 64bit, i5-9600K @ 3.7 Ghz, 32GB DDR4 RAM, 1TB Samsung EVO 860 M.2 SSD, GAINWARD RTX2060 6GB, Oculus Rift S, MS FFB2 Sidewinder + Warthog Throttle Quadrant, Saitek Pro rudder pedals. Link to comment Share on other sites More sharing options...
daryan Posted February 4, 2015 Share Posted February 4, 2015 I haven’t tested this fully myself, but if you are going for altitude records in the sim, I know you can fire the RATO’s whilst airborne. I wonder if firing these just before the top of climb would give you an edge. It may well be that the drag of the RATO’s would be counteractive to the climb or the building of speed. Link to comment Share on other sites More sharing options...
ttaylor0024 Posted February 4, 2015 Share Posted February 4, 2015 I dont have the Mig (yet!) but that should not be possible (unless you are in a dive). Above about 55,000ft you're practically always above mach 1. I was stalled at 88,000ft still going over Mach 1. Air density is so low up there that you just don't slow down, and you need a massive TAS in order to keep control of the aircraft. Link to comment Share on other sites More sharing options...
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