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DEPARTMENT OF THE AIR FORCE

WASHINGTON, DC

OFFICE OF THE SECRETARY

SAF/AAII (FOIA) 1 000 Air Force Pentagon Washington DC 20330-1 000

Mr. John Greenewald

Dear Mr. Greenewald

14 January 2015

This is our final response to your 31 December 2014, Freedom of Information Act request for copy of OTIC Document AD0222630, Antigravity, Jan 1958. We received it from NASA FOIA under their Ref: 15-HQ-R-0003.

The document was previously reviewed and released in its entirety by Air Force Space Command Los Angeles FOIA. Copy of document is attached.

Please direct your questions to the undersigned at (703) 693-2736 and refer to case 2015-01899-F. Department of Defense Regulation 5400.7/Air Force Manual 33-302 indicated fees be assessed for processing this request; however, there are no applicable fees in this instance.

1 Attachment

Sincerely

ESPINAL.JOHN. M .11 8481 03 7 5 JOHN M. ESPINAL

Digitally signed by ESPINAL.JOHN.M.118481 0375 ON: c;:US. o=U.S. Government. ou=DoD, <>4oPKI, ouoUSAF, cnoES.PINALJOHN.M.118481 03 7 S Date: 2015.01.14 10:05:38 ·05'00'

Government Information Specialist

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UNCLASSIFIED

AD 222 6~0l R~ 1~ tk.

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ARMED SERVICES TECHNICAL INFOIWTION AGENCY ARLINGroN HALL SfATIOO ARLING'Im 12, VIRGINIA

UNCLA§§IFilED

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lfOl'ICB: Wflen govel'!llllent or other dravi~a, spee1• f'1cat1ons or other elate. are used tor aJ11 purpoae other tlwl 1n eormection v1 th a detini tely related govel'llllent proc:ul'elleJlt operation, the u. s. Oovemment thereby incurs no .reapooa1bW t7, nor arrt obllption vbe.tsoever; aDd the tact that the Govem­Mnt 11a1 be.ve f'omll.ated, turnilbed, or 1n ~ vay supplied the said dravtnss, speciticationa, or other data is not to be regarded b7impl1cation or other­vise as 1n any anner licensin8 the bolder or aJrJ other penon or corporation, or convey1z:18 aJ11 ri(bts or perw.1ae1on to lllmlltactul:'e., uee or aell a:tJ.1 patented invention that 1111,y 1n UliY lf'l1 be related thereto.

age 3 of 8

Best . Available

Copy

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OC•C. N0./ :2 ?£51 COPY NO. _ __ ._:i __ _

TECHNICAL LIBRARY AIR F'ORCE BALLISTIC MISSILE o••IISION

HQ. ARDC U.S. A .F.

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NAs-Al~ ~1&1 study Bo:: l~! wc.:xt' Holt, Masa .

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ANilGJW/ITX

by w. K. &gen

! NO.c;:~Pf \'. ')T ••. - --

According to Dirac tt.e.u; ! ·. for each eletnentary particle of ordinary matter, a conjugat e particle of opp::~~.~ properties. Thh "ant1matte:" hu bHn produced only ncently, and only in quantities too &~~~all for the performance of gravitational tleptri­.ents. Since no experiment exists which tlthtr proves or dis­proves the repulsion of utter and antimatter, it is legitimate to explore the possib111t1n of such a concept. However1 it ap­peau thtt the use of antimatter for engineering purposes would be most 1mpraet1c:al, unec:onOtDical and disastrous.

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National Ac:ad.-y of SCiences National Restereh COUncil

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.);;; :tr.t t ; ,= speculadon hn ariwn as to the ponibillty that utter and

;.:\t : .. ,attw: rtli i gnviuUonally re~l each other.1 •2•3 The l"OJ'd 11aAt1utter11

reftrs to a concept introduced bV Dirac, according to which there is, for each

elemtntary pntlcle of ordinary utter, a conjugate puUclla ··' opposite pro­

perties. Thus, for ttltt ordinary proton, which carries a posith-e charge,

there 1a an antiproton which is negat!.tt.l : ..• ._arged. Similarly, there are par-

tides conjugate to ntutrons, namaly 1 the "••ltinet.al. .. 't)rt!' 11 ~t!protons and

antineutrons interact in txacUy the same manner u protons and neutrons,

and hence atomic nuclei can bt built of antiprotons and antineutrons. Each

such nucleus would correspond exactly to a nucleus built of ordinary matter.

Tht nuc:lti made of antiprotons ar.d antineutrons combine with positruns to

form ~t~s and molecules, just as ordinary nuclei combine with electrons.

The tum, 111nt1matter11 , comprises 1nt1protons, antineutrons, and the atoms

and mol~e~les made of these particles and positrons.

If matter and anti•atter get into contact they annihilate each other,

that is, the ruttu and ant1matter disappear, and a relatiwly very hrge

amount of radiation entrgy appears. ConverMly, energy can bt converted into

matter and antimatter, and single antiprotons and antineut~~~s hlv~ been

"c:rtated" in this way, although it takes tht highest energy accelentors av.-11·

able today to do this and the process is extremely inefficient on the basis of

the C:OIIIpuison r:f the eleetric.ll energy eons~.~a~ed to the energy contained in

created puticlu.

If utter and anU•tttr would g.ravit•tiondly repel tach other, Ein.teln't

principle of equivalence between a local g:avitational field and a uniform ac·

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': -f!-J'l'9 r:!ler:·: ion wo-Jld bll! viohted. This principle has betn vtr1f1~-:i '"f'UialentaHy

with great acGuracy and ln a vtritty of ways. However, none ¢f t~st exper1·

111tnts !nvc:l•te-:i a:~U ·l\atter, which was produced only rtctni. ~ :1 and only in fl\.1,.1'!_

t! ~1•~ too M'a I i f•Jr the Pf'rformance of gravitational txpuill'•"'ts. It is there-

fort ltqit!~te !., enga1411 in sdentif!e speeulat : . '\ u to the consequences of

tne u~uilption that matter and antlmatter r.tpel each other gra'I1Utionally.

It sho•ad be mentioned that these speculations le .. ~.: to J. c'·ru:- unsatisfac-

to1 )' theories, but thu h beyond the sc:ope of the present stw~

If matter ¥nd antimatter repelled e: ch othor gravitationally, the -.arth,

consisting of matter, would repel * h:xjy of antimatter. As to the \dea of con­

necting such a body to a body of matter to o~t.in a weightle l s combination, the

following remarks may suffice!

1) Nobody claims the gravitational repulsion of matter and antimatter to

be a fact. It is only pointed out that no experiment exists which tither proves

or disproves the assumption of such a repulsion. (The ''proposed" experillltnts in

this direct ion 2•3 are aeutally ~tite unfeasible because of the ~llness of

the effeett.) The mere fact that the repulsion has not been cheeked even on

the smallest experimental scale proves that it would not be practical to use

such repulsion for engineering purposes, even if the repulsion existed,

2) Even assuming 10% of the theoretical madnun efficiency in the "crea­

tion" of antimatter from energy (an assumption which is far too opt1m1stic) the

production of an amount of antiutter required to uke a man wtighf:less wou.&.a

requin the total electrical output of the TVA system for eight centuries, and

this electrical energy would cost twenty times the value of all the gold at

Fort Knox.

3) If i.h; antimatter wne coMected to the 1111n to 111ake hill we!ghtlua, an­

nihilation radiation would result and the man would uke hh entrance into

heaven ln 1 flash equivalent to two hundred thousand 20-ktlotOtl bombs.

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1. Philip ik'1·dliCn and thomu Gold' "Or. tJ:e Gravit&t ~.lflal Interaction 'lt Mat~~• ·t· • ,,,,-;ialettet • '1

~ . ~tu~an Sh .a .: "An Experimental Search for ( ...... vitational Jltlnul !:!~n. 1'

3. Robltrta U. Cordova: 11Tht Use of AntilTidtter u a M?-ane of Overcoming Grav1 tational Attraction."

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