Hi for all,i have one question for the staff:Why the torsion effect of the plane incoming at TAS over 1090 kmh?I report a poin of the manual of Mig 15 bis.
9.1.5. Uncommanded roll
Uncommanded roll can occur at high flight speeds throughout the altitude envelope. At altitudes below 4000 m, this can occur at TAS greater than 1070 - 1090 km/h (small needle on the airspeed indicator). As altitude increases, the true airspeed, at which uncommanded roll can occur, decreases. At altitudes above 11000 m, the true airspeed, at which uncommanded roll can occur, stabilizes in the 1010 - 1090 km/h range.
Uncommanded roll is corrected by applying opposite stick deflection to maintain the desired roll angle.
Now i report for eplain this wikipedia part of the True Air Speed:
The true airspeed (TAS; also KTAS, for knots true airspeed) of an aircraft is the speed of the aircraft relative to the airmass in which it is flying. The true airspeed is important information for accurate navigation of an aircraft. Traditionally it is measured using an analogue TAS indicator, but as the Global Positioning System has become available for civilian use, the importance of such analogue instruments has decreased. Since indicated airspeed is a better indicator of power used and lift available, True airspeed is not used for controlling the aircraft during taxiing, takeoff, climb, descent, approach or landing; for these purposes the Indicated airspeed – IAS or KIAS (knots indicated airspeed) – is used. However, since indicated airspeed only shows true speed through the air at standard sea level pressure and temperature, a TAS meter is necessary for navigation purposes at cruising altitude in less dense air. The IAS meter reads very nearly the TAS at lower altitude and at lower speed.
Now why you use TAS for parameter and not IAS? This is one bug for me and false the experience of the fly in this plane.I have this effect at hight altitude with air speed 300/400 max!?I stall at this air speed not Mach 1 Uncommanded roll...i dont think.Please consider my report,i love this plane and all your work and please,sorry for my english..