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Патент USA US2404190

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July 16, 1946.
2,404,190 _
w. B. PoPE
Filed Feb.: 22, 1944
2 sheets-shea 1>
"Wmslowß, Pope
-July 1s, y1946.
w._v B. POPE
2,404,190 ~
Filed Feb. 22, -1944
2 Sheets-Sheet?
Patented July 16, 1946
Winslmv B. Pope, Detroit, Mich., assigner, by,
' " mesne assignments, to United States of Amer- , j
Appiicationr‘ebruary 22, 1944, seria1No.523,41s._ ,
4 Claims. (o1. 1024+491.;A
This invention> relates to reaction propulsion
jectile'which embodies a main projectile body I0
having a chamber I| thereinY for the reception of
an explosive charge, not shown, and having an
devices of the so-called “rocket type,” more par
ticularly to an improved arrangement for sup
porting the propelling charge.
axially andrearwardly extending burster tube |2.
It has been proposed heretofore to provide a
~ ' Threadably secured to the base end of the body
.propelling charge of slow-burning powder, or
other suitable combustible material, in the form
of annular sticks and to Vsupport such sticks by
lar casing I3 having lits trailing end contoured to
I0 and extending rearwardly therefrom is a tubu
form an axially opening Venturi passage I4. .Suit
able stabilizing ñns I5 are> pivoted at I6 to a ring
means of ar cage comprised of a plurality of rod
like elements and end plates, such as shown in
I'lÉwhich Vis externally threaded tothe trailing
the copending application, Serial No. 487,689, of 10 end ofthe casingrl3.¿‘ .
4 -.
Warren H. Farr, filed May 20, 1943.
Referring _to Figure l, it will be noted that Vthe .
The present invention has for its object the
casing I3 is provided at its forward end with an '
provision of relatively simple means for rigidify
internal shoulder '|8. This shoulder, as will be
ing the above-mentioned cage structure to the
later "described, forms a support for the cage I9
end that such rigidification will aid’in maintain
which >carries the propelling charge.
ing the cage structure coaxial with the projectile
-The cage I9 includes, as shown in Figures l to
whereby to aid in insuring true flight of the pro
¿ôuapl'urality of longitudinally extending rods 26,
an annular rearward end plate 2| and an annular
Another object is to provide,such a cage struc
20 forward end plate 22, the plates 2| and 22 having
ture with improved means of economical manu
inner annular ñanges 23 and 24 respectively.
facture for locking the rod-like members against
Each of the rods 20 is provided with integral upset
vibration and substantial deflection.
or bulbous portions 25 and 26 intermediate its
With the above and other objects in View which
ends and with upset heads 2l at its opposite ends. .
will be apparent from the following description
The rods 20 extend through the reaward end
to those skilled in the art to which the invention 25 plate 2| in uniformly circumferentially spaced
appertains, the present invention consists in cer
relation, the heads 27 at the rearward ends seat- «
tain features of construction and combinations `
ing 'against the plate 2|. Such upset heads 2'I
of parts to »be hereinafter described with reference
to the accompanying drawings, andthen claimed.
In the drawings which illustrate suitable em
bodiments of the present invention:
Figure 1 is a longitudinal section through a
rocket projectile having the arrangement of the
are formed after the rods 20 are extended through
the plate 2|. `A
The propelling charge is in the form of annular
sticks 28 of slow burning powder or other suitable
material, the openings 29 therein being slightly
larger than the heads 2l and upset portions 25
present invention incorporated therein;
` 35
and 26 to permit the sticks to be slipped over the
Figures 2 and 3 are enlarged transverse sec
tions taken substantially on the lines 2_2 and
The forward end plate 22 is provided with
uniformly circumferentially spaced keyhole slots
Figure 4 is an enlarged` side elevation of the
cage for the propelling charge in partially assem 40 30, the enlarged portions ofthe slots 30 being of
suñîcient diameter to permit the head portions
3_3, respectively;
Figures 5 and 6 are transverse sections taken
- substantially on lines 5_5 and 6_6, respectively,
of Figure 4;
Figure 7 is a fragmentary longitudinal section gV
of a rocket projectile similar to that of Figure l
but in which the burster tubey is. not used> and
showing the arrangement employed to compen
for the
8 isnon-use
an enlarged
of the
burster tube,
substantially'on the line 8_8 of Figure 7.
Referring to the accompanying drawings in
vwhich like numerals refer to like parts through
out the several views, there is shown in Figure 1
for the purpose of illustration, one form of pro-'
21 of the rods 20 to be slipped therethrough.
In .
the `assembled condition, it will be notedthat the-`
rods 20„ as shown in Figure 2', are disposed in the
narrower vportions of the slots' 30. K
Adjacent the upset portions 25> are a pair of ~
annular rigidifying plates 3| and`32, which may
be in the form Vof metal stampings, the plate 3|
,having radial slots 33 extending outwardly from
the inner periphery thereof and the plate 32
having radial slots 34 extending inwardly from
the outer> periphery thereof. Th'e slots 33 and
34 have the‘same circumferential' spacing as the
rods 20 and the rods extend through these slots.
The plates 3| and 32 abut each >other and `irrthelr
dially inward and outward movement. Ã
Similar plates 35 and 36 are associated with the
rods 20 adjacent the upset portions 26.'
rangement for supporting the propelling charge,
the'plates Ble-32 and Z55-36 rigidly holding the
assembled relation lock the rods 20 againstra
rods against lateral deiiection> or vibration and 'Y
the ears 38 in the one case and the extending
The sticks 28 comprising the propelling charge Ul portions 38-a in the other case holdingthe
rearward end against lateral movement. `The
are supported on the rods 2U in_series, there be
» construction described isV particularly advan
tageous in that there is no likelihood of the cage Y
ing one series between the plate V’32 _and th'e end
plate 2l, a second series between` the plates 13| Y
assemblybecoming distortedor shiftedV to an off
and 36 andra third series between theV plate 36
center position during flight of the projectile. ~ As ,
and the forward end plate 22. It is obvious that
a result the projectile will have a truer flight than
any desired number of such series maybe em
ployed, depending on the length of the easingl3.` . ï has/been the case heretofore.
, Y Another important advantage of the construc
k The » complete >cage Y assemblyV including the..
tion described resides in the fact that by rigidify-v
st'icks 28k is supported within the casing 13,1 the
` forward end plate 2E seating against the shoulder' 15 ingV Ythe charge supporting cage, the charge sticks
are prevented from breaking down through con
tact with the walls of the casing or the burster
Vend of the bodyV it forthe reception of the heads’
Y I8. An annular groove 37 is provided inthe b_aseVV
Y tube incidentV to vibration or deflection of the'
21 at the Vforward endsfof the rods 20. The cage
cage'rods. Such breaking down of the charge
`sticks is extremely disadvantageous in that small.
pieces 'of 'the charge may exhaust through the
assembly, of course,V is disposed V.within the cais- Y
ing I3 before th'e casingV and main bodilyV portion
are assembled.
" n'
Venturi passage and»V cause the projectile to de
Figure 1; the burster' tube
' As will be seen from
viate from its 'intended flight or oausejserious
personal or property damage when the rprojectile
is fired from its projector. p
. l2 extends axially within'and through ’the cage
assembly just described.V In order to stabilize the
rearward end of thev'cage assembly and maintain
it Vagainst lateral movement, a number of earsr'38
rl‘he arrangment fdescribe'd alsoV permits free
fiowrof the products of combustion between and
around the s_erieslof charge sticks.
arestruok fromy the ñange 2:3 of the rearward
end plate 2| into` the plane# ofthe plate 2l so
Itewill be obvious, to those skilled in thefart
,that various changes may beY made in the de
that such' vears will -seat against-the burster tube
V12, as shown in Figures 1 and 3,“andrthus' support
Ythe cage assembly against lateral 4deflection.V .
tailed construction andnarrangement of the parts
. ÍIn some Casesjthe burster tubejlZ 'may jbe
‘ ` described, Without departing from the spirit and
omitted-andl inzthisY oase,V as Yshown in Figures '7
substance of ' the'> invention', the scope ’of which
is deñned bythe appended claims, o
and 8, the’rearward end plate 2_Il _is formed with
radially outwardly extending projections 38-a
What is claimed is:k
'_ ner, supportV the cage assembly against lateral
»deflection Apart ¿from this the~construction is
generally the same as that of Figureï'l.
I_[nV lthe assemblyï of th'e- cage,rprior' to the as
1. -A'devioe for supporting annular charges of'V
which are arranged to- engage l,with th'e inner wall
surface of thecasing -I3 Vand. thus, in this man
combustible material for use in rocket projectiles, Y
comprising a pair of spaced coaxial annular end
plates, Va plurality of parallel rod-like elementsY
extendingbetween'Vandjsupported by said end,
>plates in circumferentially spaced relation with
respectto each othenmeans intermediate said
’end plates’for locking >said rod-like elements
of charge sticks 28 .are slipped over the rods 2Q
against lateral movement, said mea'nsincluding/V
. to` a position between the'rearward end plate 2l
and theupset or bulbousv portions 25. Y Then the .
a pair of annular abutting plates, the onesur
rods _2B areV` distorted to an Outward position, as
roundingsaid @elements _and having _radial re
~. shown in broken ‘outline in Figure 5,.whereby the
cesses in its inner periphery and _the other being
plate 32 is inserted within thecircumferentially
surrounded by said _rod-_like elements and having
A’radial recesses in: its outerperiphery, said- rod
spaced «rods 26; vThe rods 2û arethenV moved
>radially back to a normal position. within the 50 like elementsnbeing seated“ in said recesses of
slots 34.' Next,V the'rods 20<are distorted radially
inwardly, as shownin brokenoutline in Figure'ô,
Y'and the plateV 3l is slipped into surrounding rela
tion'V with `respect to the rods 20 with :the slots 33
aligned with the rods. After kthe plate 3i clears
the 'bulbous portions 25, the rods areallowedï to
both said plates and> said recesses .beingof suchY
Width as to closely engage and lthereby’corïiin'e
said rod-like elements. against _lateral movement,
said rod-like elements being arranged‘toísupport
the annular’` charges` of combustible' material `be-'
tween said end plates' and saidv intermediate
spring back outwardly into the slots 33.*HThe
ment with the plate 32,»thus closely Vconfining
I the rods in the opposed slots 33’ and 34 and hold
and ~ a coaxial central- ' member >cireim'ifere'ntìally
60 spacedefro'mV the inner- Wall surface vof. saideas‘
ing, an annular cage-like member'within said
V ingfthe‘m against relative" radially inward orl out- .
2.V In a rocket device'having a tubular?casing
plate 3| is'th‘en' slid along `the» rods into engage
leasing and surrounding saidV central member,>
` ÍThe Vsecond series of >'charge sticks 2i!v is then j 'said cage-likeî'member comprising 'apairof end]
elements and a plurality of longitudinallyl extend
assembled to the rods 2l! and the> plates 35 and
36 are assembled in the same manner' as the
ing parallel rods carried by said end elements in> A
" ¿I
After the third orfforward ’series of vcharge
.circumferentially spaced relation about ra com»` ~ '
' >mon axis, one of said‘end> elements'being'` sup- z
ported'by said casing and `theol-,her of said end
elements having (a plurality of radially inwardly
sticks 28 is> assembled to the ends ofthe rod’sÈZe,
the rods are againvsprung radially outwardly Yto
permit the forward end plate 2‘2jt0V be slipped
over the` end heads 21, .the headsextending
throughïthe enlarged» portions of the 'slots4 3d.
extendingl portions seat-ing against >said ' central
Y member, said-endelements'holding said Y
r‘ne'mlrlerl again’st'rlateral movementërelativefto ‘said
VThe rods Aare >then, allowed tospring back into the
'casingïan’dï ann?ularf elements of combustible ma
narrower portion‘sofïthe slots`30¿. ` ’
terialïsurrbunding and supportedby said-rods». ~
3. In a rocket device having a tubularcasing, a
ï ’ "
1 1Tnerelßisßthus;provideda re1auve1‘y vsimple ar 751
cage-like member for supporting annular lele
ments of combustible material within said casing
comprising a pair of annular end rings in spaced
apart relation and a plurality of generally paral
lel rods carried by said end ringsin circumfer
by said end members in circumferentially spaced
relation about a common axis, and at least one
pair of closely adjacent annular members inter
mediate the ends of said rods, one vof said annular
members being disposed Within the circle of rods
and having radial recesses at its outer periphery
partially closely surrounding said rods from one
side thereof, and the other of said annular mem
bers surrounding the circle of rods and having
casing and the other of said end rings having 10 radial’recesses at its inner periphery partially
circumferentially spaced radially outwardly ex
closely surrounding said rods from the other side
tending portions engaged with the inner wall l thereof, said‘end members having radial portions
holding the opposite ends of said cage against
surface of said casing for holding said cage-like
member coaxially Within said casing.
movement laterally of said casing, and annular
4. In a reaction propulsion device having a 15 elements of combustible material at opposite
tubular casing, a cage for holding a propelling
sides of said pair of annular members and sur
charge within said casing, comprising spaced end
rounding saìd rods.
members, longitudinally extending rods carried
entially spaced relation about a common axis,
and a plurality of annular cylinders of combusti
ble material surrounding said rods, one of said
end rings being supported at one end of said
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