Jeff Scott, Propeller Torque Effect. Aerospaceweb.org, Feb 25, 2011. http://www.aerospaceweb.org/question/dynamics/q0015a.shtml
Note:
(a) aileron http://en.wikipedia.org/wiki/Aileron
aileron (n; French, from diminutive of aile wing, aisle--more at AISLE;
First Known Use: 1909)
(b) torque http://en.wikipedia.org/wiki/Torque
(also known as moment or moment of force; section 1 Terminology: This
article follows US physics terminology by using the word torque. In the UK
and in US mechanical engineering, this is called moment; The magnitude of
torque depends on three quantities: the force applied, the length of the
lever arm, and the angle between the force vector and the lever arm)
(c) The etymology of yaw (n; vi) is uncertain, whose first known use is 1586.
The etymology of both words (aileron and yaw) are from www.m-w.com.
(d) contra-rotating propellers http://en.wikipedia.org/wiki/Contra-rotating_propellers
(section 2.1 United Kingdom: Supermarine Spitfire and Seafire)
(e) Macchi M72 http://en.wikipedia.org/wiki/Macchi_M.C.72
(the last photo)
