The Independence G-force Brake is a small drogue parachute attached to the harness. It was developed to reduce physical stress when flying spirals. During spiraling huge G-forces stress the body, so that is not possible to fly maintaining an effective spiral dive. . Dizziness, nausea and even blackouts can occur. With the Independence G-force brake that risk can efficiently be reduced.
As pilot age increases, the ability to withstand high G force decreases, and blackout and loss of conciousness arrive much sooner.
The Independence G-force brake reduces the impact of G-forces on the body of up to 40%. The drogue parachute reduces the amount of turns at constant sink rate. Due to its additional drag the pilot is pulled a bit behind compared to spiraling without brake parachute. Thus the glider canopy has a steeper angle towards ground and reduce altitude more efficiently.
G-force brake is particularly suited for high performance gliders with efficient aerodynamic characteristics and as well for tandem purposes.