Torque flight compensators don’t add torque, can’t fly and don’t compensate for either.
One account of their introduction is that as archers added increasing stabiliser
weight, bows felt less smooth to shoot and harder to tune. So a flexible joint was
introduced between bow and weight, so that the balance and feel before
and after the shot was retained (static balance), but the bow behaved ‘normally’
for the few milliseconds of the shot. It is now recognised that there are other features
of TFC action that are also important. In particular, TFC’s can be used to absorb
vibration, and variable TFC’s can be ‘tuned’ to get a good compromise between damping,
stabilisation and feel.