Fairchild Hiller DL-4A

[Dynoman]

The study of the DL-4A was an attempt to design a relatively low-cost recovery system using a sailwing that would enable horizontal landings without the weight penalties of a rigid variable geometry system.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19700016796_1970016796.pdf

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19710016878_1971016878.pdf