NASA Tells Space Cowboy Concept To Mount Up
by Michael Keller
Earlier this month, NASA awarded $100,000 to a Washington-based company to develop their concept for a cowboy spacecraft. The firm, Tethers Unlimited, has up to a year to develop a proposal for a craft that can deploy a net and tether attached to a winch to capture an asteroid and stop it from spinning.
The nanosatellite-scale system, envisioned in the artist’s concept above, is called the Weightless Rendezvous And Net Grapple to Limit Excess Rotation (WRANGLER, of course). The proposed system will use two technologies to stop a much larger and more massive asteroid from spinning: the Grapple, Retrieve, And Secure Payload (GRASP) Technology for Capture of Non-Cooperative Space Objects that uses inflatable tubes to deploy a net; and a winch-mounted tether that can exchange angular momentum with the object.
If it works, it could be an important element to decrease the complexity and risk of NASA’s long-term plan to collect and redirect an asteroid. Once caught and despun, the celestial object would then be moved to a stable orbit beyond the moon so that astronauts can explore it.