Brian,

Torque is a measure of turning or rotational force in units such as lbs.ft
or equivalent, horsepower is a measure of work done in a given period of
time (1hp = 550lb.ft/sec) and tension is a stress that produces an
elongation of an elastic physical body, usually from opposing forces. In
that you can have torque and tension without any work being done, you
really need (horse) power to make a winch launch happen.

Derek Copeland

At 17:23 20 July 2009, brian whatcott wrote:
Del C wrote:
.... You need a lot of torque and
power to accelerate the glider up to flying speed, then a slight
reduction
to allow for the safety climb and rotation and then lots of torque and
power again for the full climb....


Derek Copeland

Your note quoted above seems to treat torque (or thrust, or tension)
and HP as synonymous. They are not. Somebody with a physics
background could provide helpful input here....

Brian W