28-03-2020, 12:42 PM
Power; Ie. Thrust and Torque . The more thrust , the greater the torque. This can have adverse effect on high powered aircraft during take off-- so much so that due to the torque fed into the air frame from the motor, a wing tip could hit the ground causing the aircraft to cartwheel down the airstrip.
Counter measures had to taken , by feeding in correction with rudder etc. Numerous high powered fighter aircraft during the second world war were lost due to this problem. The discussion here is to highlight the topic of side thrust and down thrust,as built into model aircraft. This problem was addressed with rubber powered Wakefield models by experimenting with down thrust and side thrust. ..We`ll consider down thrust first.--As indicated it means that the trust line is angled downwards. This angle, combined with the angle of attack of the wing, can create adverse handling, if taken to excess. Similarly with side thrust- too much will create excessive yaw. This indicates that each model must be trimmed individually with initial test flights are performed.
Brian C
Counter measures had to taken , by feeding in correction with rudder etc. Numerous high powered fighter aircraft during the second world war were lost due to this problem. The discussion here is to highlight the topic of side thrust and down thrust,as built into model aircraft. This problem was addressed with rubber powered Wakefield models by experimenting with down thrust and side thrust. ..We`ll consider down thrust first.--As indicated it means that the trust line is angled downwards. This angle, combined with the angle of attack of the wing, can create adverse handling, if taken to excess. Similarly with side thrust- too much will create excessive yaw. This indicates that each model must be trimmed individually with initial test flights are performed.
Brian C
