[Geronimo89]

I started flying those more odd IL-2 planes like the BI-6, and I am wondering how the heck do you fly that thing? At some point it just goes nose down and into the ground...

[KG64_Cnopicilin]

at me it flips upside down and i lose all controls...

[Jaegita]

The best plane ever. I don't shoot with it ever.

[JG3_Franke]

Don

[asheshouse]

The loss of control at 750 km/h is apparently historically correct.
Something to do with aerodynamics effects and loss of airflow over the control surfaces perhaps?

Anyway what I do is just to keep nose down, cut engine power, wait for the the aircraft to reverse loop and come back up again, try to stay aware of which way you are pointing as you black out, and as the aircraft slows on the climb you will regain control. Only works if you have enough altitude.

[D-shere]

Control reversal.
Happens usually at transonic speeds, the BI-6 discovered it unpleasantly.
I preferred the original flight model for this thing in Pacific Fighters.

Article on this oddity says:
On March 27, during a low-altitude test flight, Backchivandzhi pushed the aircraft's speed. After 78 seconds, the plane went into a 45-degree dive and crashed into the ground, killing the beloved pilot. The accident put a halt to flight tests, and a lengthy investigation began. Eventually, after wind tunnel testing, it was determined that the BI-1 lost control due to the effects of transonic velocity. Estimates of Backchivandzhi's final velocity range from 800 to 990 km/h, but the recording instruments were too damaged by the crash for a reliable measurement.

[P/O W. 'Moggy' Cattermole]

roll it 180*, it climbs uncontrollably rather than dives uncontrollably, and you can use that time to slow it to a controllable speed

[AIRdomination]

Tests with the BI-1 by the Russians shows the first signs of transonic speed problems. ALL aircraft back in that time period should have this problem (maybe not as severe). The closer a plane gets to the speed of sound, aka: the transonic range, the plane will have lots of pressure going at its airframe. This has also been noted Historically with a P-38 that was in a dive, and coulnd't pull out even though the pilot was pulling the stick up, it still pushed down.

The BI-1 and BI-6 are historically correct when they loose control at speeds around 750km/h.

In the BI-1, sometimes you'll have to shut the rocket engine off so that you can slow down if you are near exceeding the speed.

The BI-6 solves that problem a little bit by adding Ramjets to the wings. Once you are fast enough, ramjets will work (thats how ramjets basically work) and once your ramjets are working, you are suppose to turn your main rocket motor off. The rocket motor is ONLY there for take-off, or to get you going fast enough. If you have just the two ramjets running, your plane will be flying at a smooth speed (unless you're diving) and it won't exceed its critical mach number.





PS: The BI-6 is not over-powered by any means. 2 ramjets plus a rocket motor will surely give you that kind of propulsion.