Falconry training and technique two parts that twist freely, each with a metal hoop on the end. The swivel may be traditional, or modified. The modified swivel has much larger metal hoops than the traditional. While swivels have been made of cloth or other materials in the past, most modern falconers use metal swivels. See Falconer's knot for more information about tying off the bird to the glove. When using Aylmeri jesses, there are usually two sets of straps: the mews straps, for manning and tethering the bird, and flying straps. The flying straps are lighter and smaller for hunting; the mews straps are
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,