Slap_Chop Posted March 9, 2012 Posted March 9, 2012 Hi. Just wondered if anyone has experienced this. Was doing a quick mission. Just me against some ground forces. I was at about 10,000 Feet lining up a target for attack on TGP. Without warning the entire aircraft just shut off. Hud MFCD's engines, everything. Complete silence except for Master Warning but no warnings flashing on status panel. I started the APU again moved throttles to off and attempted to go through engine startup again. With APU generator running the Hud and MFCD's came up again. Restarting the engines I couldn't get either to full power . Tried moving the throttle to up the down and shutting engines off again and restarting just couldn't get them to go again. Finally had to punch out. I checked and random failures option is not selected. There was no Visible External damage to aircraft or fires etc. I'd rather have a bottle in front of me than a frontal lobotomy and I've had both. [sIGPIC][/sIGPIC]
ilikepie Posted March 9, 2012 Posted March 9, 2012 can you post the track for people to look at? Action After Contemplation
Nate--IRL-- Posted March 9, 2012 Posted March 9, 2012 What did the debrief say (if anything). Although it probably wouldn't playback properly anyway - did you save the track? Nate Ka-50 AutoPilot/stabilisation system description and operation by IvanK- Essential Reading
Slap_Chop Posted March 9, 2012 Author Posted March 9, 2012 No I'm sorry I did not save the track. I wanted to see if I had turned on random failures by mistake and stupidly left the mission. No I wasn't out of fuel I did check the fuel gauge when the shutdown occurred. I also thought that I had run out of fuel. I'd rather have a bottle in front of me than a frontal lobotomy and I've had both. [sIGPIC][/sIGPIC]
Barrakooda Posted March 9, 2012 Posted March 9, 2012 I had this happen a few nights ago Mad frantic oh bugger wtf restart process was initiated to no avail :( That was after I realised I had I missed the main boost pump switches during start up, I had turned on the wing boost pumps & the 2 switches above them not below Barra = goose! :)
Slap_Chop Posted March 9, 2012 Author Posted March 9, 2012 I hate to say this but all the boost pumps were on (because that would make sense). I checked again on the restart sequence. They were on. I just could not get the engines over the 40 PSI bar. I'd rather have a bottle in front of me than a frontal lobotomy and I've had both. [sIGPIC][/sIGPIC]
Nu-NRG Posted March 9, 2012 Posted March 9, 2012 10 seconds negative G is going to deprive engines of fuel. I was in a dive once, wham, everything shut off. Oke, APU started and I recovered the engines. Aviate - Navigate - Communicate
Slap_Chop Posted March 9, 2012 Author Posted March 9, 2012 I really wish I would have saved the track. Learned my lesson now. Next time something weird happens it will be 1st thing I do. Live and Learn. Sucks making rookie mistakes. I'd rather have a bottle in front of me than a frontal lobotomy and I've had both. [sIGPIC][/sIGPIC]
wojasos Posted March 9, 2012 Posted March 9, 2012 Next time if engines won't come to life again, try motoring them first.
Frostiken Posted March 9, 2012 Posted March 9, 2012 Next time if engines won't come to life again, try motoring them first. You shouldn't have to motor them in-flight, as the airflow through the fanblades itself serves the exact same purpose as bleed air. This is exactly what a windmill start is - in a normal start, the APU's bleed air pushes all the engine bits around until it can survive on its own, in a windmill start, the airstream is pushing the engine bits around all the same. [sIGPIC][/sIGPIC]
wojasos Posted March 9, 2012 Posted March 9, 2012 You shouldn't have to motor them in-flight, as the airflow through the fanblades itself serves the exact same purpose as bleed air. This is exactly what a windmill start is - in a normal start, the APU's bleed air pushes all the engine bits around until it can survive on its own, in a windmill start, the airstream is pushing the engine bits around all the same. I don't mean the star procedure. Motoring i used to clean the engine from affected fuel after failed start.
Kalahari Posted March 9, 2012 Posted March 9, 2012 Happened to me only once,but I was making a negative dive full throttle. System Specs : Processor ; Intel®Core i7-3930 CPU@ 3.20GHz. RAM -16.0 GB Type-64bit GPU-GTX 970 Never eject over a village you've just bombed - US Marines Gen.
Nate--IRL-- Posted March 9, 2012 Posted March 9, 2012 Happened to me only once,but I was making a negative dive full throttle. That is quite normal - what is not normal is that the engines could not be restarted afterwards. Nate Ka-50 AutoPilot/stabilisation system description and operation by IvanK- Essential Reading
Whargod Posted March 10, 2012 Posted March 10, 2012 Same thing happened to me recently, I created a quick mission and after 10 - 15 seconds of gameplay everything shut down. It is fairly repeatable now so either I am doing something wrong or it's a bug. I will get a track file and post it when I have time.
pbpullman Posted March 10, 2012 Posted March 10, 2012 Yep...it'll happen if you have negative Gs going for 10 seconds or so. I made the false assumption that I could roll over inverted and fly all the way home looking at the ground. Can't do that in the A-10. Not sure why though.
GGTharos Posted March 10, 2012 Posted March 10, 2012 Because the fuel is removed from the bottom of the tanks. If you pull negative g's, the fuel ends up where there's no piping to move it to the engines. [sIGPIC][/sIGPIC] Reminder: SAM = Speed Bump :D I used to play flight sims like you, but then I took a slammer to the knee - Yoda
mvsgas Posted March 10, 2012 Posted March 10, 2012 (edited) Can't do that in the A-10. Not sure why though. Believe it or not, most aircraft are limited in negative g flight. Watch videos of the Rafale, Thyphoon, F-15, etc. , some will start venting fuel, all but acrobatic design aircraft are limited. Edited March 10, 2012 by mvsgas To whom it may concern, I am an idiot, unfortunately for the world, I have a internet connection and a fondness for beer....apologies for that. Thank you for you patience. Many people don't want the truth, they want constant reassurance that whatever misconception/fallacies they believe in are true..
Panthro Posted March 10, 2012 Posted March 10, 2012 you'd think there would be some simple trick to use gravity to aim a fuel pick up where the fuel is. oh well, reliability is more important then inverted flight! [sIGPIC]http://forums.eagle.ru/signaturepics/sigpic86362_2.gif[/sIGPIC]
GGTharos Posted March 10, 2012 Posted March 10, 2012 There is, and it's used in some aircraft. Negative g flight is pretty useless in combat. You can only pull a little compared to +gz, and it destroys your +gz tolerance. you'd think there would be some simple trick to use gravity to aim a fuel pick up where the fuel is. oh well, reliability is more important then inverted flight! [sIGPIC][/sIGPIC] Reminder: SAM = Speed Bump :D I used to play flight sims like you, but then I took a slammer to the knee - Yoda
Sierra99 Posted April 18, 2012 Posted April 18, 2012 Thing is, if it was a "Sim-Ism" It wold do it all the time... If you Goofed, youre more than aware of the consequences of your actions and weather you KNOW what you did or not... you are more careful... You may now removed one chit from your "Bag of Luck" and put it in your "Bag of Experience." [sIGPIC][/sIGPIC] Primary Computer ASUS Z390-P, i7-9700K CPU @ 5.0Ghz, 32GB Patriot Viper Steel DDR4 @ 3200Mhz, ZOTAC GeForce 1070 Ti AMP Extreme, Samsung 970 EVO M.2 NVMe drives (1Tb & 500 Gb), Windows 10 Professional, Thrustmaster Warthog HOTAS, Thrustmaster Warthog Stick, Thrustmaster Cougar Throttle, Cougar MFDs x3, Saitek Combat Rudder Pedals and TrackIR 5. -={TAC}=-DCS Server Gigabyte GA-Z68XP-UD3, i7-3770K CPU @ 3.90GHz, 32GB G.SKILL Ripjaws DDR3 @ 1600Mhz, ZOTAC GeForce® GTX 970.
Depth Posted April 18, 2012 Posted April 18, 2012 The tanks are not designed for zero gravity operation and to compensate there is a small "capacitator" that supplies the engine with fuel during negative-gravity maneuvers, generally provides 10 seconds of fuel. It's best to do a full stick input when going into a steeper dive to avoid the duration of negative G, or if it's very steep inverting the craft and pulling back into the dive, levelling off as you reach the angle. The latter option has the bonus of looking totally badass. [sIGPIC][/sIGPIC]
WildBillKelsoe Posted April 19, 2012 Posted April 19, 2012 happened to me when I was in multiplayer. fortunately, I was at angels 6, and she did that because I performed a barrel roll for more than 10 seconds, trying to visualize the SAM location that nailed my friends. :music_whistling: Anyways, both windmill restarted, all went smooth except for CDU alignment which happened in-flight, then suddenly, I was able to press EGI, the four SAS channels, LAAP ON, altimeter source, and shy of all this, the HUD became collimated diagonally. AWAITING ED NEW DAMAGE MODEL IMPLEMENTATION FOR WW2 BIRDS Fat T is above, thin T is below. Long T is faster, Short T is slower. Open triangle is AWACS, closed triangle is your own sensors. Double dash is friendly, Single dash is enemy. Circle is friendly. Strobe is jammer. Strobe to dash is under 35 km. HDD is 7 times range key. Radar to 160 km, IRST to 10 km. Stay low, but never slow.
Depth Posted April 19, 2012 Posted April 19, 2012 Windmill start at angels 6? How low were you when you levelled out again? [sIGPIC][/sIGPIC]
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