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Патент USA US3058432

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Oct. 16, 1962
3,058,422
0. B. OLSSON
WING ASSEMBLY FOR MISSILES
Filed April 11, 1960
2 Sheets-Sheet 1
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INVENTOR.
OLOF 552771.. OLSSON
BY
Arnmrnr
Oct. 16, 1962
o. B. OLSSON
3,058,422
WING ASSEMBLY FOR MISSILES
Filed April 11, 1960
2 Sheets-Sheet 2
INVENTOR.
OLOF BER TIL OLSSON
BY
Md/
'
A [men/F11?
United States Patent 0 i pIce
1
3,58,422
Patented Oct. 16, 1962
2
in an initial position out of an extended position relative
3,058,422
WING ASSEMBLY FOR MISSILES
Olof Berti! Olsson, Bofors, Sweden, assignor to Aktie
bolaget Bofors, Bofors, Sweden, a corporation of
Sweden
>
Filed Apr. 11, 1960, Ser. No. 21,285
Claims priority, application Sweden Apr. 13, 1959
4 Claims. (Cl. 102-50)
to the ?xed wing part; and
FIGURE 4 is a view similar to FIGURE 3, showing
the pants in response to movement of the flap to the ex
tended position relative to the wing.
Referring now to the drawing, a wing assembly made
in ‘accordance with the present invention is shown to in
clude a plastic ?xed wing part 1 and a plastic wing ?ap
part 2, A torsion spring 3 is mounted in the folding
This invention relates to projectiles and rockets and, 10 ?ap part and is secured at one end to the flap part (not
more particularly, to a wing therefor having a ?xed wing
shown) and at the opposite end to a support 5 of a light
part and a folding ?ap which is spring actuated into the
alloy part 4 cast into wing part 2. Flap 2 is rotatably
position in which it forms an extension of the ?xed wing
supported on wing 1 by means of a support stud 5 extend
part.
ing from casting 4 into a corresponding bore in wing 1.
Ordinarily, it is desirable to ?re projectiles or rockets 15 The turning force for the flap is supplied by torsion
spring 3 which is twisted when the ?ap is in the position
quiring a wing for the projectile having such a folding
of ‘FIG. 3. Casting 4 is further provided with a lower lug
having an oblique cam surface 6 and an upper locking lug
?ap. In order to provide stability in the trajectory of the
from a tube of the smallest possible dimensions, thus re
7. An oblique surface 7a of the upper lug 7 faces a cor
projectile or rocket, it is necessary that the ?ap assumes
the position in which it forms an extension of the ?xed 20 responding oblique surface 8a of a locking bolt 8 that is
slidably carried by the ?xed wing part 1.
wing part and is secured in such position as rapidly as
A helical coil spring 9 mounted in a cavity of wing 1
possible after the ?ring of the projectile or rocket. Ac
cordingly, it is usually desirable to make the spring which
actuates the ?ap as strong as possible and to provide an
efficient and effective locking device to secure the flap in
the extended position. However, because of space and
weight requirements, the size of the spring must be mini
mized, making it important that the locking device for
and encircling a portion of a movable bolt 8 exerts an
outward pressure upon the bolt 8 tending to move it up
wardly toward an extended position.
However, a catch
pin 10 slidably supported within a transversely extending
opening in the bolt 8, is urged by a leaf spring 11, mount
ed within an axial bore 11a in the bolt 8, toward an out
securing the folding ?ap in the spring actuated position
wardly extended locking position in engagement with a
be extremely reliable so as to secure positively .the flap 30 shoulder 1a of the ?xed wing part 1, thus preventing an
upward movement of the locking bolt 8 by the spring 9.
immediately after it has ‘assumed its extended position.
The outermost end of the catch pin 10 is in the path
Wherever the locking device does not secure the ?ap in
of movement of the cam surface 6 of the lower lug on
its extended position, air and side pressures acting upon
the casting 4, so that upon movement of the ?ap with the
the ?ap will prevent the main spring from returning the
?ap into the desired position at any time after the initial 35 casting 4 toward the extended position, the cam surface
6 will urge the catch pin 10 inwardly against the action
?ring of the projectile or rocket. It is therefore an ob
of the leaf spring 11, to release the locking bolt 8 for
ject of :the present invention to provide a wing for pro
movement upwardly toward locking engagement with the
jectiles or rockets in which the flap is securely locked in
upper lock lug 7 of the casting 4. During such move
proper position immediately after assuming such position
ment, the oblique surface 8a of the locking bolt 8 will
as an extension of the ?xed wing part, in'an e?icient,
slidably engage with the corresponding surface 7a of the
effective, and reliable manner.
lock lug 7, to draw the ?ap into alignment with the
Another object of the present invention is to provide
?xed part 1.
'
an operating assembly for moving the folding flap of a
The ?ap 2 is prevented from passing its centered posi
projectile or rocket wing into an extended position relative
to the ?rst wing part and which includes self-actuating 45 tion in alignment with the ?xed part 1 by a stop member
12 integral with the ?xed wing part 1 and a facing lug 13
locking means for retaining such ?ap in an extended posi
of the casting 4, thus assuring the proper alignment of
tion, in a reliable and fool-proof manner.
the flap with the ?xed part of the wing and the positive
In accordance with the present invention, a spring ac
locking together of the parts by the lock bolt 8 and the
tuated bolt is arranged upon the ?xed wing part for move
ment between an initial position in which it permits the
?ap to be rotated from an initial to an extended position,
following which it engages with a cooperating part of the
50 lock lug 7.
-
It will now be appreciated that the spring 9 can be
made comparatively strong as it does not obstruct the
movement of the ?ap toward the centered position shown
in FIGURES l and 3, such spring 9 acting upon the lock
flap to secure such flap in the extended position. The
locking device normally retains the locking bolt in a re 55
ing bolt 8 only after the flap has been put into proper
tracted position and is responsive to the movement of the
alignment with the ?xed wing part ‘1.
flap to the completely extended position to release such
While this invention has been described with particular
locking bolt for movement immediately before or upon
reference to the construction shown in the drawing, it
the movement of the flap to the extended position so as
is to be understood that such is not to be construed
to lock the flap in such extended position.
60 as imparting limitations upon the invention which is best
All of the foregoing and still further objects and ad
de?ned by the claims appended hereto.
vantages of this invention will become ‘apparent from a
Having thus described my invention, I claim as new
study of the following speci?cation, taken in conjunction
and desire to secure by Letters Patent:
with the accompanying drawing, wherein:
1. A wing assembly for projectiles and rockets com
FIGURE 1 is a fragmentary perspective view, with 65 prising, in combination, a ?xed wing part, a folding ?ap
parts broken away, of a wing assembly made in accord
ance with the present invention showing the ?ap in a posi
tion in which it forms an extension of the wing;
part, a stud extending from one part and journalled in
the other for rotatably supporting the ?ap on the wing
part, torsion spring means yieldably acting between said
FIGURE 2 is a view similar to FIGURE 1 but show
?xed part and said folding ?ap for effecting rotation of
70 said folding ?ap from an initial toward an adjusted posi
ing the wing assembly with the flap in a tilted position;
FIGURE 3 is an enlarged fragmentary cross sectional
tion relative to said ?xed part, said flap in said adjusted
position forming an aligned extension of said ?xed wing
view of certain parts of the present invention with the ?ap
3,058,422
part, a bolt slidably carried in said ?xed wing part for
longitudinal movement transversely to the axis of rotation
‘of the ?ap from a retracted position into an extended
position engaging said ?ap to secure the same in said
4
other to permit rotation of the flap in reference to the
wing part, torsion spring means yieldably acting between
said ?xed wing part and said folding ?ap for effecting ro
tation of said folding ?ap from an initial position toward
an adjusted position relative to said ?xed wing part, said
?ap in said adjusted position forming an aligned extension
gagement with said ?ap, a releasable locking device secur
of said ?xed wing part, a bolt slidably carried by said
ing said bolt in said retracted position, and a lug carried
?xed wing part for movement from a retracted position
by said flap actuating said locking device toward a released
into an extended position engaging said flap to secure the
position in response to rotation of said ?ap into said ad 10 same in said adjusted position, a spring yieldably urging
justed position in which it forms an extension of said
said bolt toward said extended position for engagement
wing part.
with said ?ap, a releasable locking device for securing
2. A wing assembly as set forth in claim 1, wherein
said bolt in said retracted position, a lug carried by said
said folding ?ap includes a lock lug movable past said
?ap actuating said locking device toward a released posi
bolt in response to a rotation of the ?ap toward said ad 15 tion in response to rotation of said flap into said adjusted
justed position, and said bolt extending into locking en
position in which it forms an extension of said wing part,
gagement with said lock lug in response to release of said
said locking device comprising a catch pin, said bolt hav
locking device.
ing a transversely extending bore slidably supporting said
3. A wing assembly as set forth in claim 2, wherein
catch pin therewithin, and yieldable means acting upon
the outermost end of said lock bolt de?nes an oblique 20 said catch pin to urge the same into a securing position
surface, said lock lug of said folding ?ap de?ning an
with said bolt.
oblique surface facing said oblique surface of said bolt,
and outward longitudinal movement of said lock bolt
References Cited in the ?le of this patent
axially into engagement with said lock lug effects sliding
UNITED STATES PATENTS
movement between said oblique surfaces of said lock 25
bolt and said lock lug to draw said folding flap into
2,923,241
House ______________ _._'_. Feb. 2, 1960
aligned extension with said ?xed wing part.
2,924,175
Jasse ________________ __ Feb. 9, 1960
4. A wing assembly for projectiles and rockets com
FOREIGN PATENTS
prising, in combination, a ?xed wing part, a folding
adjusted position, a spring in said ?xed wing part yieldably
urging said bolt toward said extended position for en
?ap, a stud extending from one part and journalled in the 30
1,191,519
France ______________ __ Oct. 20, 1959
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