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DRAFT INCLOSURE NO. 1
l. Ueeearch "1ld Devuloomunt
a. \Jh.at German ecientiate bad• better-tban-clvera&ge knowledge ot the Hort.en
brot.hura' work and penpective thialdng; vhere are thaae acientist. nov
located, and what ia their present activi.t17 Tbdoe ahow.d be coot.acted
and interrog&ted.
b. VhtLt is the pr~aent activity ot the P..orteo crothera, Walter and Riem.ar1
c. lJlut.t ia know of the whereabout.a ot the entire llorten twly, particw.arl7
the ai11t.er7 ill ahoul.d .be cont.acted and interrogt1t.ed N~&rdinte any con-
t.emplated plana or perapective tb1nkinc ot the Hort.en brothers, and any
i.ntereat shown by the RwleiADt" to _develop their aircra.tt.
d. .I.re wiy effort• being made to develop the Horten •Parabola&" or aodity
this cc.ntigu:ation to approx:1.llate a:,. oval o:- diac7
•• What i:1 the Hort.en perspective tMnking on internal. controla or cont.role
thut an: effective mainly by 11treame or air or g•• originut.ing fro■ wit.b-
in th~ aircra!'t to supplant. convent.ionul. -xternal au.r!t1ce controla7
2. Control
For 11.ny nircraft vhoae shape approximates that ot ll1l ov.u, disc, or 111.1.ucer,
i.n!'ormation reagrcing the tollovi.ng itec.s ia requoat.-d:
a. Boundary layer control method b7 auction, bloving, or a combinution of
both.
b. Specit1l control• tor e!tectiv• uneuverability at ~•ry alow epeuda or ex-
tremely higb altitwies.
c. Openings in either the leading edge top and botto■ sw-t'acea thut artt em-
ployed chiefly t.o accompliah boundary lqer control or !'or the, purpoH
ot reducing t.he induced drag. kD.7 openin~• in the le-.cling ed.:e aho'4ld be
reported and deacribed u to ahape, aize, etc. 'nus inveeti~ation ia
significant t.o justify a disc ah&oe configuration for long-range t1p0lic- ,
at.ion.
d. Approxi11Lt.te &i.rl'oil abape iD the c•nter and near the tipa.
e. Front view and rear view shape.
3. It.ems or Conetl"'Uction
a.
b.
c.
'Iype or mat.urial, vh.-tber metal, terrous, non-ferrous, or non-a:etullic.
Compoeit• or sandwich cono~ruction .utilizing ••rious coabinat~ona or .
mutala1, utallic toile, plutica, -.nd perh&p:, b.laa "'-od or oudlar ~t.urial.
Unuaual fabrication
et.ability.
method• to achieve extreme light weight und •tructurul
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