Jess (falconry) Jess (falconry) A jess (plural "jesses") is a thin strap, traditionally made from leather, used to tether a hawk or falcon in falconry. Jesses allow a falconer to keep control of a bird while it is on the glove or in training, and allow a bird to be secured on a perch outside its aviary. Jesses come in various types: Jesses are generally made from strips of leather as thin as possible, for which purpose kangaroo leather has become increasingly popular over the years, as it is thin, light-weight and extremely durable with proper care. Jess size varies depending on
Space tether missions launch lock trouble of the tether reel mechanism." A follow-on Space Tethered Autonomous Robotic Satellite, STARS-II, Iaunched on 27 February 2014 as a secondary payload aboard an H-2A rocket. The 9-kg student satellite flew a 300-metre (980 ft) electrodynamic tether made from ultra-thin wires of stainless steel and aluminium. The mission completed after two months and deorbited on 26 April 2014. One objective of this program was to demonstrate possible technology for de-orbiting space debris. The experiment was only partially successful, and tether deployment could not be confirmed. The orbit decayed from 350 km to 280 km in 50 days,