US4686884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas management deflector
Assignee: Raytheon Co
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Filing: 1985-12-27
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Granted: 1987-08-18
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Expires: 2005-12-27
Abstract
Abstract Pivotable deflector panels are installed in the transition sections between a plurality of rocket storage and launch chambers and a lower plenum or manifold chamber which is provided to dispose of the exhaust gases from missile firings. The deflector panels are in addition to the sets of doors which are provided to close off the missile storage chambers upon the firing of a missile in another chamber in order to prevent recirculation of exhaust gases into the closed off chambers. The deflector panels act with the doors to control exhaust gas flow, thereby improving the effectiveness of the gas plug which is formed by exhaust gases within a transition section.
Inventors
- 👤 Edward T. Piesik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:28
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04; F41F3/0413
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
227 words
Apparatus for controlling the flow of exhaust gases of missiles in a plurality of missile storage chambers during firing of a missile comprising: a plurality of missile storage chambers oriented generally adjacent one another; a plenum chamber extending generally along the bottom of said storage chambers and coupled thereto for disposing of exhaust gases generated in said chambers by the firing of a missile therein; and a plurality of transition sections, one for each chamber, extending between respective chambers and the plenum chamber, each transition section including: (a) a pair of doors pivotably mounted on a first pair of opposite sides of the transition section adjacent the juncture of the transition section with its associated chamber, said doors being pivotable between open and closed positions in response to gas pressure forces generated during the firing of a missile, said doors when in the closed position serving to close off the transverse bottom opening of the chamber; and (b) a pair of deflector panels pivotably mounted on the other pair of opposed sides of the transition section in a position below the doors, said deflector panels being effective in cooperation with said doors to direct the exhaust gases of a missile being fired to form a gas plug effectively preventing the recirculation of gases back into said chamber as the missile moves upward in said chamber during launch.
Claim 2
Dependent Claim
227 words
Apparatus for controlling the flow of exhaust gases of missiles in a plurality of missile storage chambers during firing of a missile comprising: a plurality of missile storage chambers oriented generally adjacent one another; a plenum chamber extending generally along the bottom of said storage chambers and coupled thereto for disposing of exhaust gases generated in said chambers by the firing of a missile therein; and a plurality of transition sections, one for each chamber, extending between respective chambers and the plenum chamber, each transition section including: (a) a pair of doors pivotably mounted on a first pair of opposite sides of the transition section adjacent the juncture of the transition section with its associated chamber, said doors being pivotable between open and closed positions in response to gas pressure forces generated during the firing of a missile, said doors when in the closed position serving to close off the transverse bottom opening of the chamber; and (b) a pair of deflector panels pivotably mounted on the other pair of opposed sides of the transition section in a position below the doors, said deflector panels being effective in cooperation with said doors to direct the exhaust gases of a missile being fired to form a gas plug effectively preventing the recirculation of gases back into said chamber as the missile moves upward in said chamber during launch.
Claim 3
Dependent Claim
102 words
The apparatus of claim 1 wherein said doors have a width which is approximately one-half the transverse dimension of the transition section where the doors are mounted in order that the doors, when closed, substantially completely close off the opening in the transition section, and wherein the width of the deflector panels is substantially less than one-half the transverse dimension of the transition section where the deflector panels are mounted in order that the deflector panels, when in the closed position, leave a substantial gap between adjacent edges of the deflector panels to permit gases from the plenum to reach the doors.
Claim 4
Dependent Claim
44 words
The apparatus of claim 2 further including two sets of stop elements, one set associated with the doors and the other set associated with the deflector panels, said elements being positioned to limit the travel of the doors and panels past a midpoint position.
Claim 5
Dependent Claim
29 words
The apparatus of claim 3 wherein the stop elements associated with the doors are positioned to prevent the doors from moving past a closed position in the upward direction.
Claim 6
Dependent Claim
46 words
The apparatus of claim 3 further including means for developing back pressure forces from exhaust gas pressure in the plenum chamber behind the doors and panels when they are pivoted to the open position in order to urge said doors and panels toward the closed position.
Claim 7
Dependent Claim
55 words
The apparatus of claim 5 wherein said means comprise a first plurality of spacing members mounted along opposed sides of the transition section in line with the doors and positioned to contact the ends of the doors when in the open position to define spaces between the doors and the sides of the transition section.
Claim 8
Dependent Claim
52 words
The apparatus of claim 6 wherein said members are spaced apart to define gaps between members on the same side of the transition section to allow gases from the plenum chamber due to the firing of a missile to apply pressure forces behind the doors and elevate them toward the closed position.
Claim 9
Dependent Claim
21 words
The apparatus of claim 6 wherein said spacing members are integrally formed with the stop elements associated with the deflector panels.
Claim 10
Dependent Claim
19 words
The apparatus of claim 6 wherein said spacing members are integrally formed with the mounts for the deflector panels.
Claim 11
Dependent Claim
56 words
The apparatus of claim 6 further including a second plurality of spacing members mounted along opposed sides of the transition section in line with the deflector panels and positioned to contact the ends of the deflector panels when in the open position to define spaces between the deflector panels and the sides of the transition section.
Claim 12
Dependent Claim
62 words
The apparatus of claim 10 wherein the spacing members of said second plurality are separated to define gaps between members on the same side of a transition section to allow gases from the plenum chamber due to the firing of a missile to apply pressure forces behind the deflector panels and elevate them toward a position extending transversely of the transition section.
Claim 13
Dependent Claim
46 words
The apparatus of claim 6 wherein said means comprise contoured surfaces on the back sides of the doors and panels which are shaped to define vertically oriented spaces for receiving back pressure from the plenum chamber when a missile is being fired in another storage chamber.
Claim 14
Dependent Claim
16 words
The apparatus of claim 12 wherein said contoured surfaces define a plurality of vertically aligned slots.
Claim 15
Dependent Claim
11 words
The apparatus of claim 12 wherein said contoured surfaces are corrugated.
Claim 16
Dependent Claim
11 words
The apparatus of claim 12 wherein said contoured surfaces are concave.
Claim 17
Dependent Claim
46 words
The apparatus of claim 6 wherein said means comprise wall portions of the transition sections, said wall portions having inwardly facing surfaces which are shaped to define spaces for receiving back pressure from the plenum chamber when a missile is being fired in another storage chamber.
Claim 18
Dependent Claim
16 words
The apparatus of claim 16 wherein said contoured surfaces define a plurality of vertically aligned slots.
Claim 19
Dependent Claim
11 words
The apparatus of claim 16 wherein said contoured surfaces are corrugated.
Claim 20
Dependent Claim
11 words
The apparatus of claim 16 wherein said contoured surfaces are concave.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |