Sensor for switching on and off of chronometer used in air sports e.g. hang gliding - using altering size of aerodynamic lift of carrying surface which works against weight of pilot for operating chronometer automatically at take off and landing.

摘要

The tensional loading or the slackening esp. at the belt straps or other suspensions, or the elastic deformation occurring at the fixing parts of the gliding appliance, are used for activating the sensor for switching on the chronometer or the timer. The sensor and the chronometer and its fixing parts can form one unit, but also can be fitted spatially separate. The signals in both cases can be transmitted across electrical leads, hydraulic or pneumatic lines or by wireless means to the chronometer. USE/ADVANTAGES - Slow flying pleasure aircraft e.g. hang gliders. Relieves pilot of taking readings. Gives accurate and objective timing e.g. for competitive purposes.