Personnel distress signal

申请号 US6895370 申请日 1970-09-02 公开(公告)号 US3855930A 公开(公告)日 1974-12-24
申请人 MB ASS; 发明人 MULICH S; DUFFY D; SALTER S;
摘要 The disclosure relates to an improved miniature rocketry system used for propelling a signal flare and includes a pair of generally tubular shaped housings in telescoped engagement, wherein is disposed a propulsion charge, a propulsion charge ignitor, a delay train or timing fuse, a signal display flare and means for insuring complete combustion of all the pyrotechnics. A nozzle structure is provided at one end of the housing to impart a gyroscopically spin stabilized guidance to the rocket trajectory, and an improved propellant spacer is interposed between the nozzle structure and the propulsion charge for the purpose of separation of the members and retention of the propulsion charge during combustion thereof.
权利要求
1. In a rocket device, an elongated generally tubular shaped housing, a cylindrically shaped propulsion charge in one end of said housing, first means for directing the products of combustion of said charge rearwardly of said housing in a manner so as to impart rotary motion to said device as it is propelled forwardly by said charge, signal means in said housing, second means including a combustible material for igniting said signal means at a predetermined time after said propulsion charge has been ignited, and spacing means located between said first means and said charge for operatively supporting said propulsion charge, said spacing means including an annular shaped transversely extending web section and an axially extending flange located about the outer periphery of said web section and defining symetrical portions on opposite axial ends of said web section, said symetrical portions defining identically formed first and second recess means located on opposite axially spaced ends of said spacing means, one of said recess means cooperatively receiving and radially securing one end of said charge while the opposite symetrical portion selectively locates said charge in preselected axially spaced relationship relative to said first means.
2. In a personnel distress signal for use in a miniature rocketry system having gyroscopic guiding means, a propulsion charge, a time delay fuse, and signaling means, the improvement comprising means including the blended combination of a pressure insensitive chemical composition and a low gas output chemical composition for igniting said propulsion charge in any natural environment, said pressure insensitive chemical composition comprising granules of boron potassium nitrate and said low gas output chemical composition including finely ground boron barium chromate, whereby at low environmental temperatures, the combustion heat requirement is satisfied by said pressure insensitive composition while at high temperatures, the combustion pressures are not increased by the rate of burn of said pressure insensitive composition.
3. A personnel distress signal for use in any natural environment comprising: motor housing means defining first and second axially spaced tubular shaped sections, nozzle means located in one end of one of said first and second sections for imparting a gyroscopic motion to said signal; motor means located in said one section for providing a source of combustible energy to said signal; ignition means for igniting said motor means comprising a pressure insensitive chemical composition and a low gas output chemical composition; signal means connected to said motor housing means for providing a protechnic display, said signal means including a flare cup and a flare pellet located in said cup, said flare pellet including an inward concavely shaped recess, said second section of said housing means extends inwardly in said recess; and time delay fuse means located in the other of said sections for energizing said signal means after a predetermined time interval commencing after ignition of said motor means.
4. The distress signal as recited in claim 3 wherein one end of said flare cup is formed from a material having a high resistance to oxidation and which is capable of burning with said pellet whereby to contribute to the display.
5. The distress signal as recited in claim 3 wherein one end of said flare cup includes an arcuately shaped wall whereby to promote foliage penetration and to increase the overall flight characteristics.
6. The distress signal as recited in claim 5 wherein said wall approaches the form of an ogive.
7. The distress signal as recited In claim 3 which includes means for inhibiting the rate of combustion of said pellet.
8. The distress signal as recited in claim 7 wherein said inhibiting means includes a paper tube located between an inner peripheral surface of said cup and an outer peripheral surface of said pellet.
9. The distress signal as recited in claim 8 which includes a resin like material coating said tube whereby to prevent an accordian effect when said pellet is disposed in said cup.
10. The distress signal as recited in claim 3 which includes flare ignition means centrally located in said recess for igniting said pellet.
11. The distress signal as recited in claim 3 which includes primer means centrally located in said nozzle means for initiating combustion of said ignitor means.
12. The distress signal as recited in claim 3 which includes rupturable diaphragm means located in an inward side of said nozzle means for hermetically sealing the interior of said housing means and to facilitate a pressure build up therein.
13. The distress signal as recited in claim 12 wherein said motor means is subject to vaporization at high ambient temperatures and which includes sealing means located between said primer means and said nozzle means and between said nozzle means and said housing means for retaining said vapor.
14. The distress signal as recited in claim 3 which includes spacer means located between said nozzle means and said motor means to retain said last mentioned means during combustion thereof.
15. The distress signal as recited in claim 14 wherein said spacer means is comprised of an annular shaped disc having an axially extending flange carried by an outer peripheral surface thereof, said flange extending equally in opposite axial directions relative to the plane of said disc whereby to define first and second recesses on opposite sides of said disc.
16. The distress signal as recited in claim 15 wherein one end of said motor means engages one of said recesses.
17. The distress signal as recited in claim 15 which includes shoulder defining means formed on an inner surface of one of said sections of said housing means locatably receiving one end and an outer peripheral surface of said flange.
18. The distress signal as recited in claim 3 wherein said motor means includes a centrally located, axially extending passage and wherein said ignition means is disposed in said passage.
19. The personnel distress signal of claim 3 wherein the pressure insensitive chemical composition is Boron Potassium Nitrate.
20. The personnel distress signal of claim 3 wherein the low gas output chemical composition is Boron Barium Chromate.
21. The distress signal as recited in claim 3 wherein said housing means includes orifice means located between said first and second sections and on one side of said fuse means for containment of the reaction products thereof.
22. The distress signal as recited in claim 3 wherein said fuse means includes a concavely shaped recess located in each opposite, axially disposed surface.
23. The distress signal as recited in claim 3 which includes shoulder means formed in an outer surface of one of said first and second sections of said housing means for telescopically receiving the other of said sections.
24. The distress signal as recited in claim 3 which includes char and bubble forming means responsive to heat generated by said signal means for retarding the rotary motor of said distress signal.
25. The distress signal as recited in claim 24 wherein said last mentioned means includes a paint coating located on the exterior surface of said signal means.
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