Abstract
Introduction T equilibrium shape and tension of flexible towing cables have been investigated extensively in the past. However, the cables must withstand much higher loads. Usually the towing airplane climbs with the towed system undeployed to a certain prescribed altitude where deployment takes place. When the cable is fully extended, it experiences a sudden stretch, due to the velocity difference between the airplane and the towed vehicle. This stretch generates tension forces in the attachment point to the airplane that are much higher than in equilibrium flight. This phenomenon is similar to the snatch force generated in parachute deployment. The aim of the present Note is to develop an approximate solution to the deployment forces in towing systems.
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