Patent clip shows Francis M. Rogallo also envisioned hung-payload gliders using stiffened Rogallo wings in a BIPLANE format.
<a href="//commons.wikimedia.org/wiki/User:Joefaust" title="User:Joefaust">Joefaust</a> 00:49, 15 February 2008 (UTC)
2008-02-14
U.S. Patent 3194514 detail (only a small part of the large patent.)