Ki-27 too durable & strange behavior

[Pursuivant]

Originally Posted by taly001

The Ki-27 bounces its tail skid on the ground under takeoff power when stationary - propeller wash on elevator?

That seems unlikely. I don't think that IL2 models prop-wash effects on control surfaces (or following planes)

I'm guessing that the FM has the engine generating enough thrust and torque at full power that it starts to lift the plane's tail.

The idea that the Ki-27 "didn't want to sit still" if the engine was run up to full power while it was stationary might just make sense since you've got a somewhat lightly built plane with a reasonably powerful engine.

I bet that the plane won't "buck" if you use bind a key to use the "place wheel chocks" command before running the engine up.

Originally Posted by taly001

Maybe the fuselage damage model was made tough too prevent this snapping apart on ground.

IL2 doesn't simulate that sort of fuselage damage. I've never seen a plane in IL2 "break its spine" due to a hard three-point landing, even after suffering heavy fuselage damage. Such behavior would be very realistic, however, especially for planes like the FW-200, the B-24 (if ditched in water), and many carrier-based planes.

Originally Posted by taly001

What confuses me more is that the Ki-27 is a super-stable gun platform? Almost laser gun like!

I've got no problem with the Ki-27 being a stable gun platform. Soviet tests of captured examples, described it as being light on the controls, and possessing exceptional stability. But, IL2 doesn't model random turbulence which can affect even the most stable aircraft in flight (you see it on gun cameras where the shooting plane sometimes bounces around as it flies). Also, the Ki-27 vibrated constantly in flight, especially at high speeds as the wings started to get stressed. That would also affect accuracy. (Ditto for the P-39 which was also noted for vibrating during flight.)

http://www.j-aircraft.com/research/G...esky_of_vi.htm

"One well-preserved trophy Type 97 tested at the NII VVS, yielded very favorable flight evaluations. The fighter combined good speed with magnificent maneuverability, it had outstanding stability, and its flying characteristics were extraordinarily straightforward."

"Together with its strong side there were also deficiencies: The decreased weight led to complications in operation and transportation (the wing became detached), and most important, led to a decrease in durability and survivability. The aircraft lacked armor plating, the fuel tanks were unprotected, and were not filled with neutral gas, due to an absence of motor shock absorbers, the airplane vibrated continually in flight. Inadequate durability limiting the duration of a dive to about 500 to 700 m, was another deficiency of the Ki 27. Captured Japanese pilots testified that during a dive the wings began to vibrate, particularly the outer panels (on occasion resulting in their failure), and the motor quickly super.-cooled and might even stop."

"The greatest virtue of the Japanese fighter appeared to be its stability and ease of flying, which gave the pilot confidence, simplified the conduct of battle and gave a definite advantage. Thanks to its stability, the Ki 27 was able under all regimes of flight, with two machineguns, with the usual rate of fire of 1800 rounds a minute, bring sufficiently accurate and effective fire in battle . . . Another great virtue of the Ki-27 was the provision of a radio; there was a receiver on all aircraft, and on the machines of the flight commanders and higher a transmitter."