Wow!!!
Extract of my Flight Test Report Canberra Asymmetric Handling ETPS 1970.
Results of Tests
Turning During Asymmetric Flight
a. Turns at 1.1 Vmca
Turns at 30 degrees of bank were made in both directions starting from 4000 feet with the left engine set at idle and the right at 7850 RPM and 187k IAS. The rate of climb during these tests was 1800fpm. Turns were easy to make with trimmer settings of; rudder 4 units right and aileron 1 unit right. The sideslip angle was zero and the slip ball position varied between 1/2 and 1 ball width displacement right. The slipball could be centred using full right rudder trim, 3" right rudder pedal travel and a pedal force of 150lbf. This resulted in a sideslip angle of 5 degrees left during left turns and 2degrees left during right turns. These turns were uncomfortable to fly because of relatively high rudder forces and also because the aileron trimmer setting for zero force changed from 3-4 units left during left turns to neutral during right turns. During these tests the yoke position for zero roll rate varied between neutral (right turns) and 10-15 degrees rotation left (left turns).
Discussion of Results and Conclusions
Turns During Asymmetric Flight
Turns at both safety speed (160k IAS) and 1.1 Vmca (187k IAS) with 7850 RPM set were very easy with zero sideslip. When the slip ball was centred (1.1 Vmca) it was necessary to hold high pedal forces, retrim the aileron and accept aileron positions other than neutral for zero roll rate. It is recommended that the aircraft be manoeuvred with zero sideslip using the trim technique described in para 4.7.1 and co-ordinated rudder, if necessary, to keep the slip ball approximately 1/2 ball width to the right