CN103244309B - A kind of solid-rocket punching press combined engine housing - Google Patents
A kind of solid-rocket punching press combined engine housing Download PDFInfo
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- CN103244309B CN103244309B CN201310156772.XA CN201310156772A CN103244309B CN 103244309 B CN103244309 B CN 103244309B CN 201310156772 A CN201310156772 A CN 201310156772A CN 103244309 B CN103244309 B CN 103244309B
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Abstract
The invention provides a kind of solid-rocket punching press combined engine housing, comprise gas generator housing, afterburning chamber housing is connected at gas generator housing rear end, gas generator housing with the connection of afterburning chamber housing is: gas generator housing and afterburning chamber casing peripheral design the four pairs of generator journal stirrups and afterburning chamber journal stirrup that the central angle such as corresponding distributes, and generator journal stirrup and afterburning chamber journal stirrup are connected by bolt, nut; Four groups of generator boss and afterburning chamber boss is designed between four pairs of generator journal stirrups and afterburning chamber journal stirrup of gas generator housing and afterburning chamber casing peripheral, wedge shape connecting plate there is the locking hole mated with generator boss and afterburning chamber boss, gas generator housing and afterburning chamber housing, by this locking hole embedding press-in generator boss and afterburning chamber boss, are locked by wedge shape connecting plate.The two ends of the locking hole of wedge shape connecting plate are wedge surface, and the locking hole of wedge shape connecting plate and the peripheral side of generator boss and afterburning chamber boss adopt Spielpassung, and two ends wedge surface is interference drive fit.Afterburning chamber housing outer surface has four window seats for being connected with intake duct.<!--1-->
Description
Technical field
The invention belongs to solid-rocket punching press combined engine construction applications, be specifically related to a kind of solid-rocket punching press combined engine housing.
Background technique
The engine metal housing of existing solid propellant rocket is generally welded to form by spinning cylinder, front and back end socket and front and back skirt.Housing is docked by front and back skirt with each cabin section, the general less convex parts of housing outer surface.The placement of powder charge core and sticking adiabatic layer are often through front and back end socket opening.This structure is difficult to adapt to that outer diameter is little, the requirement of motor charge that slenderness ratio is large and sticking adiabatic layer.
The motor body slenderness ratio of solid rocket ramjet is comparatively large, and the axial load factor 30g born, transverse acceleration reach 25g, and housing requires high to strength and stiffness, and require that quality is light, the structure space of housing, because meeting aerodynamic configuration requirement, limits tighter simultaneously.Housing outer surface need design ignition mechanism fitting seat, journal stirrup, boss, intake duct fixed mounting, housing are connected with outer journal stirrup etc. with inter-stage section.Housing slenderness ratio reaches 11.5, motor body wall thickness little (1.5mm), and housing outer diameter little (260mm) is a difficult problem, requires shell construction will be convenient to powder charge, is convenient to the making of heat insulation layer concerning powder charge and sticking adiabatic layer.
Summary of the invention
The object of the present invention is to provide a kind of solid-rocket punching press combined engine housing.Architecture quality is light and structure &processes is simple, and fabricating cost is cheap, can bear greater impact load, is convenient to again powder charge and heat insulation layer making.
Technological scheme of the present invention: solid-rocket punching press combined engine housing of the present invention comprises gas generator housing, afterburning chamber housing is connected at gas generator housing rear end, gas generator housing with the connection of afterburning chamber housing is: gas generator housing and afterburning chamber casing peripheral design the four pairs of generator journal stirrups and afterburning chamber journal stirrup that the central angle such as corresponding distributes, and generator journal stirrup and afterburning chamber journal stirrup are connected by bolt, nut; Four groups of generator boss and afterburning chamber boss is designed between four pairs of generator journal stirrups and afterburning chamber journal stirrup of gas generator housing and afterburning chamber casing peripheral, wedge shape connecting plate there is the locking hole mated with generator boss and afterburning chamber boss, gas generator housing and afterburning chamber housing, by this locking hole embedding press-in generator boss and afterburning chamber boss, are locked by wedge shape connecting plate.
The two ends of the locking hole of described wedge shape connecting plate are wedge surface, namely with generator boss outside junction plane be interior corner cut, i.e. top rake β, β=8 ° ~ 13 °, the locking hole of wedge shape connecting plate with afterburning chamber boss outside junction plane be outer corner cut, i.e. back rake angle θ, θ=-2 ° ~-7 °; The locking hole of wedge shape connecting plate and the peripheral side of generator boss and afterburning chamber boss adopt Spielpassung, and two ends wedge surface is interference drive fit.
The central angles such as described afterburning chamber housing rear end distribute four outer chord ears, outer chord ear comprises ear body, ear body has blasting bolt mounting hole, the stiffening rib of ear body both sides, there is absorbing groove the root of chord ear, ear body and stiffening rib junction outside, and stiffening rib designs lightening hole.
The ear body thickness of slab 6mm of described outer chord ear, the stiffening rib thickness of slab 5mm of both sides; Described absorbing groove width 5mm, dark 10mm, bottom land is diameter 5mm circular arc.
The front end of described gas generator housing is closed by end socket, inside gas generator housing forward end, establish internal thread junction surface successively, guide ring that locating face that diameter is less than thread joint face, diameter are less than locating face, end socket outer flanged surface mates with the locating face of gas generator housing, and flange anchor ring mates with the guide ring of gas generator case inside; The end face of flange of end socket mates with the plane on gas generator housing, to be coordinated with the internal thread junction surface on gas generator housing by the outside thread junction surface on swivel nut and the plane of end face of flange and gas generator housing is compressed, the end face of flange of end socket is designed with seal groove, both ends of the surface surface of contact has the 2nd O RunddichtringO be placed in closure gasket groove and realize end face static seal.
Described afterburning chamber housing outer surface has four window seats for being connected with intake duct, the central angle distributions such as four window seats.
Described gas generator housing and afterburning chamber housing joint thicken and are to inserting structure, to insert surface of contact on have sealed groove place an O RunddichtringO.
Advantage of the present invention: gas generator and convenient and simple for operation with instrument room, afterburning chamber housing Butt Assembling, is beneficial to and ensures circumferential assembly precision; Gas generator housing design is ingenious, simplify the structure, be convenient to structural member manufacturing and the making of powder charge and insulating structure in convenient slender member, inspection.
Present invention achieves simultaneously good rigidly, the requirement that quality is light of impulsive load that thin-wall case bears higher stage separation.Consider technology capability, Reducing distortion ensure that heat insulation layer is press-fitted the smooth enforcement into afterburning chamber housing simultaneously.Present invention alleviates operation pressure, reduce cost.
After afterburning chamber housing, journal stirrup end ring connection support lug structure need bear stage separation load 70KN; bear larger impulsive load; while ensureing that connecting support lug structure has vibration damping absorbing effect; also there is enough intensity and rigidity; be designed with vibration damping vibration absorbing structure, lightening hole, fall stress absorbing groove etc.; and increase rigidity stiffening rib, protecting the heat insulation layer in afterburning chamber housing thin-wall spinning cylinder and afterburning chamber housing, preventing from damaging because being out of shape excessive.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is gas generator housing of the present invention and afterburning chamber casing connecting structure schematic diagram.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the B-B sectional view of Fig. 2.
Fig. 5 is afterburning chamber shell construction schematic diagram of the present invention.
Fig. 6 is outer chord ear structure schematic diagram.
Fig. 7 is that the A of Fig. 6 is to being outer chord ear partial enlarged drawing.
Fig. 8 is gas generator housing partial enlarged drawing of the present invention.
Fig. 9 is end socket partial enlarged drawing.
Figure 10 is swivel nut partial enlarged drawing.
Figure 11 is gas generator housing of the present invention and end socket joint structure partial enlarged view.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, Figure 2, Fig. 3, Fig. 4: the present invention connects afterburning chamber housing 2 in gas generator housing 1 rear end, gas generator housing 1 with the connection of afterburning chamber housing 2 is: gas generator housing 1 and afterburning chamber housing 2 periphery design corresponding etc. four couples of generator journal stirrup 1a distributing of central angle and afterburning chamber journal stirrup 2a, generator journal stirrup 1a and afterburning chamber journal stirrup 2a be connected by bolt, nut 3; Four groups of generator boss 1b and afterburning chamber boss 2b are established between the four couples of generator journal stirrup 1a sending out the raw device housing 1 of combustion gas and afterburning chamber housing 2 periphery and afterburning chamber journal stirrup 2a, wedge shape connecting plate 4 there is the locking hole mated with generator boss 1b and afterburning chamber boss 2b, gas generator housing 1 and afterburning chamber housing 2, by this locking hole embedding press-in generator boss 1b and afterburning chamber boss 2b, are locked by wedge shape connecting plate 4.It is uniform that wedge shape connection and journal stirrup bolt are connected circumferential transpostion interval.
The locking hole of described wedge shape connecting plate 4 with generator boss 1b outside junction plane be interior corner cut, i.e. top rake β, β=8 ° ~ 13 °, the locking hole of wedge shape connecting plate 4 is outer corner cut at the junction plane with afterburning chamber boss (2b) outside, back rake angle θ, θ=-2 ° ~-7 °.Wedge shape connecting plate 4 and generator boss 1b, the convex 2b of afterburning chamber are coordinated by wedge surface and generator 1 and afterburning chamber 2 are docked end face and compress and fit together, the peripheral side of the locking hole of wedge shape connecting plate 4 and generator boss 1b and afterburning chamber boss 2b adopts Spielpassung, monolateral gap 1mm, two ends wedge surface coordinates for interference drive fit, the locking hole of wedge shape connecting plate 4 is pre-processed, during assembling, join by the locking hole of wedge shape connecting plate 4 and make generator boss 1b and afterburning chamber boss 2b wedge surface, be then press-fitted and put in place.This structure radial space takies less, do not affect aerodynamic configuration condition under increase tie point, add the coupling stiffness of linkage structure, enhance the bending resistance of thin-wall case.
Described generator body 1 thickeies with afterburning chamber housing 2 joint and is to inserting structure, is having sealed groove to place the first O-ring seals 5 on the surface of contact inserted.
Present invention achieves thin wall physical efficiency and bear higher stage separation impulsive load, transverse acceleration, the requirement that quality is light simultaneously.Under the prerequisite that radial space is little, solve a connection sealing difficult problem for point piece housing.Reduce thin-wall case distortion, ensure that heat insulation layer is press-fitted the smooth enforcement into afterburning chamber housing, solve a difficult problem for technology capability, reduce cost.
As Fig. 5, Fig. 6, Fig. 7:
The central angles such as described afterburning chamber housing 2 rear end distribute four outer chord ear 2d, outer chord ear 2d comprises ear body 2d1, ear body 2d1 there is blasting bolt mounting hole 2d5, the stiffening rib 2d2 of ear body 2d1 both sides, there is absorbing groove 2d3 the root ear body 2d1 of chord ear 2d and stiffening rib 2d2 junction, lightening hole 2d4 on stiffening rib 2d2 outside.
The ear body 2d1 thickness of slab 6mm of described outer chord ear 2d, the stiffening rib 2d2 thickness of slab 5mm of both sides; The described wide 5mm of absorbing groove 2d3, dark 10mm, bottom land is diameter 5mm circular arc.
The outer chord ear end frame thick 10mm in portion of housing.Apart from end face 70mm scope housing wall thickness 4mm.The outer support lug structure parameter of housing for take turns Optimum Design Results more; both ensured that the outer journal stirrup of afterburning chamber housing can bear stage separation load; can not transfer loads on housing thin-walled again, avoid housing thin-walled to cause moderate finite deformation, protect the heat insulation layer in afterburning chamber housing.
Four outer chord ear 2d structures need bear about 70KN stage separation load, impulsive load is comparatively large, and journal stirrup Root Stress is maximum, structure is the weakest, requires that housing journal stirrup place structural strength is enough, housing distortion is little, weight also wants light, and structure will meet the requirement of body aerodynamic configuration simultaneously.Only consider to increase journal stirrup and frame portion intensity, housing journal stirrup stress can significantly reduce, but housing thin-wall face stress and distortion all larger.Analyze from casing rigidity handling characteristics, journal stirrup is ineffective after stage separation, but housing also needs to keep sufficient intensity and rigidity to meet follow-up usage requirement.The connection journal stirrup adopted after optimal design has vibration damping vibration absorbing structure, lightening hole, falls stress absorbing groove, rigidity stiffening rib etc., not only has vibration damping absorbing effect, also has enough intensity and rigidity simultaneously, and reduce the static stress and distortion of thin-wall case.
Afterburning chamber housing 2 outer surface has four window seat 2e for being connected with intake duct, the central angle distributions such as four window seats.Afterburning chamber circumference distribution 4 intake duct connecting bases, its structure and dimensional accuracy affect the performance of intake duct, heat insulating construction solidifies the structural type that rear employing fits into housing outside, require higher to the housing accuracy of form and position, bring larger difficulty, especially in welded design technology to design and processing.
Because the boss of afterburning chamber housing 2 outer surface welding is too many, and to connect journal stirrup can only be welded structure intake duct joint chair, front and back, and intake duct joint chair, front and back connection journal stirrup are discontinuous construction, and thickness differs greatly.The complexity of afterburning chamber shell construction brings larger difficulty to the processing technology of housing, and after heat treatment and machine add, afterburning chamber housing distortion is large, housing is long again, afterburning chamber heat insulation layer assembling difficulty, easily produces stuck phenomenon, the design proposal of motor afterburning chamber cannot be realized.If equally because of the excessive rigid assembling heat insulation layer of cylinder distortion, make heat insulation layer to exist larger additional stress, thus affect the performance of heat insulation layer performance.
As Fig. 8, Fig. 9, Figure 10, Figure 11:
The front end of gas generator housing 1 is closed by end socket 6, is less than the guide ring 1c of locating face at the locating face 1d that gas generator housing 1 leading inside establishes internal thread junction surface 1e successively, diameter is less than thread joint face, diameter; End socket 6 outer flanged surface 6a mates with the locating face 1d of gas generator housing 1, and flange anchor ring 6b mates with the guide ring 1c of gas generator case inside; The end face of flange 6c of end socket mates with the plane 1f on gas generator housing, to be coordinated with the internal thread junction surface 1e on gas generator housing 1 by the outside thread junction surface 7a on swivel nut 7 and the plane 1f of end face of flange 6c and gas generator housing is compressed, the end face of flange of end socket is designed with seal groove, both ends of the surface surface of contact has the 2nd O RunddichtringO 8 be placed in closure gasket groove and realize end face static seal.End socket 6 becomes wall thickness design, and outer mold surface ellipsoid is than 1.97, and interior profile ellipsoid is than 2.02.
Gas generator housing of the present invention and convenient and simple for operation with instrument room, afterburning chamber housing Butt Assembling, is beneficial to and ensures circumferential assembly precision; Gas generator housing design is ingenious, simplify the structure, be convenient to structural member manufacturing and the making of powder charge and insulating structure in convenient slender member, inspection.
Claims (5)
1. a solid-rocket punching press combined engine housing, comprise gas generator housing (1), it is characterized in that: connect afterburning chamber housing (2) in gas generator housing (1) rear end, gas generator housing (1) with the connection of afterburning chamber housing (2) is: gas generator housing (1) and afterburning chamber housing (2) periphery design corresponding etc. four pairs of generator journal stirrups (1a) distributing of central angle and afterburning chamber journal stirrup (2a), generator journal stirrup (1a) and afterburning chamber journal stirrup (2a) pass through bolt, nut (3) connects, four groups of generator boss (1b) and afterburning chamber boss (2b) is designed between four pairs of generator journal stirrups (1a) and afterburning chamber journal stirrup (2a) of gas generator housing (1) and afterburning chamber housing (2) periphery, wedge shape connecting plate (4) there is the locking hole mated with generator boss (1b) and afterburning chamber boss (2b), gas generator housing (1) and afterburning chamber housing (2), by this locking hole embedding press-in generator boss (1b) and afterburning chamber boss (2b), are locked by wedge shape connecting plate (4), the two ends of the locking hole of described wedge shape connecting plate (4) are wedge surface, namely with generator boss (1b) outside junction plane be interior corner cut, i.e. top rake β, β=8 ° ~ 13 °, the locking hole of wedge shape connecting plate (4) is outer corner cut at the junction plane with afterburning chamber boss (2b) outside, i.e. back rake angle θ, θ=-2 ° ~-7 °, the locking hole of wedge shape connecting plate (4) and the peripheral side of generator boss (1b) and afterburning chamber boss (2b) adopt Spielpassung, and two ends wedge surface is interference drive fit, the front end of described gas generator housing (1) is closed by end socket (6), the guide ring (1c) of locating face (1d) is less than at the locating face (1d) that gas generator housing (1) leading inside establishes internal thread junction surface (1e) successively, diameter is less than thread joint face, diameter, the flange anchor ring (6a) of end socket (6) outer mates with the locating face (1d) of gas generator housing (1), and flange anchor ring (6b) mates with the guide ring (1c) of gas generator housing (1) inner side, the end face of flange (6c) of end socket (6) mates with the plane (1f) of gas generator housing (1), to be coordinated with the internal thread junction surface (1e) on gas generator housing (1) by the outside thread junction surface (7a) on swivel nut (7) and the plane (1f) of end face of flange (6c) with gas generator housing (1) is compressed, the end face of flange (6c) of end socket is designed with seal groove, both ends of the surface surface of contact has the 2nd O RunddichtringO (8) be placed in closure gasket groove and realize end face static seal.
2. solid-rocket punching press combined engine housing according to claim 1, it is characterized in that: the central angles such as afterburning chamber housing (2) rear end distribute four outer chord ears (2d), outer chord ear (2d) comprises ear body (2d1), ear body (2d1) there is blasting bolt mounting hole (2d5), the stiffening rib (2d2) of ear body (2d1) both sides, the root of chord ear (2d), ear body (2d1) have absorbing groove (2d3) with stiffening rib (2d2) junction outside, stiffening rib (2d2) design lightening hole (2d4).
3. solid-rocket punching press combined engine housing according to claim 2, is characterized in that: ear body (2d1) the thickness of slab 6mm of described outer chord ear (2d), stiffening rib (2d2) the thickness of slab 5mm of both sides; Described absorbing groove (2d3) wide 5mm, dark 10mm, bottom land is diameter 5mm circular arc.
4. solid-rocket punching press combined engine housing according to claim 1 and 2, it is characterized in that: described gas generator housing (1) and afterburning chamber housing (2) joint thicken and be to inserting structure, to slotting surface of contact there being sealed groove placement the one O RunddichtringO (5).
5. solid-rocket punching press combined engine housing according to claim 1 and 2, it is characterized in that: afterburning chamber housing (2) outer surface has four window seats (2e) for being connected with intake duct, the central angle distributions such as four window seats.
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| CN201310156772.XA CN103244309B (en) | 2013-04-28 | 2013-04-28 | A kind of solid-rocket punching press combined engine housing |
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| CN201310156772.XA CN103244309B (en) | 2013-04-28 | 2013-04-28 | A kind of solid-rocket punching press combined engine housing |
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| CN103244309B true CN103244309B (en) | 2016-01-20 |
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| US4766726A (en) * | 1985-12-27 | 1988-08-30 | Morton Thiokol, Inc. | Segmented case rocket motor |
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