Engines quit when firing rockets from hover?

[ShuRugal]

Fooling around with the Hind yesterday, I had some difficulty getting my rockets to arm (issue was invalid payload combination, i think?) so i was doing a lot of land, rearm, hover, test fire, repeat.  When i finally got it to fire with S5 rockets loaded, one "short" mode salvo from a hover with 4 S5 pods killed my engines.  Restarted the engines, lifted back to a hover to try again, and reproduced the failure.

Is this realistic?  I feel like 16 rockets should not produce anywhere near enough fumes to choke the engines, especially with the engines tucked up tight to the center of the rotor where they can get lots of fresh air from above the bird?

[AeriaGloria]

Yea it’s realistic. Any rocket launch is limited to above 100 kmh in the manual. And the same is true for Mi-8/Ka-50/Mi-28. 

By Mi-24 development the phenomenon was in manuals and known. However there is a video of a Mi-28N firing S-8 rockets in a 130m hover and crashing from gas ingestion causing engine failure. The video seems to be gone but I don’t remember it being a lot of rockets. There seemed to be one 2 years later also at 400m altitude. At that hieght you would think a dual engine failure would be needed to not survive https://defense-update.com/20110215_mi-28n_crash.html#.ZCHHsCVlAWM

 

 

[Dragon1-1]

Rockets can produce a lot of smoke, and accordingly, in a hover the engines need a lot of air. If they suddenly get smoke up the intake instead, they choke. It doesn't take much to interrupt combustion.

[ShuRugal]

I get that, I'm just surprised that the Mi-24 is so susceptible to it, given the engine inlet position.  I would have expected it to take a much larger salvo to get enough smoke above the disc for the engines to ingest it.