Some fellow in the US (Midwest, maybe Chicago area?)
built a 10 or 12 meter glider back in the late 60s.
I believe it used the prone (not supine) head forward
position. There was a two or three page article (funny)
about it in SOARING.

At 23:06 28 December 2003, Steve Pawling wrote:
'F.L. Whiteley' wrote in message news:...
'Uri Saovray' wrote in message
om...
Doug Hoffman wrote in message
news:...

One might ask, why lay that way? I assume you mean
to imply that a
fuselage
with a smaller cross-section, hence less drag, could
then be employed.
This
has sort of been done in the HP-18 series of gliders.
In the HP-18 one
lays
almost flat on one's back, fet forward of course,
with the head tilted
upward somewhat using a head rest. The HP-18 fuse
is pretty short
compared
to most. Comfort can be an issue, or so I'm told.
But to be fair, many
say
they like it just fine.

-Doug

And don't forget the Siren Edelweiss C30S
\ /
\./
----------------(o)-----------------
u
Diamant anyone? Thought the BS-1 was also very prone.

Frank Whiteley

Those have supine cockpits but, of course, they could
also be prone to
do something! The original question was regarding prone
seating
(laying?) position. Horten used a prone cockpit on
several flying wing
designs and this can be seen very nicely on the Horten
IV at:
http://members.cox.net/akecs/HoIVrest.htm

Also, there is a guy here in Tehachapi that designed
a modern flying
wing with a prone cockpit but so far only a quarter
scale has been
built.

All the best,
Steve