US3726215A - Explosive destruct device - Google Patents
Explosive destruct device Download PDFInfo
- Publication number
- US3726215A US3726215A US00163228A US3726215DA US3726215A US 3726215 A US3726215 A US 3726215A US 00163228 A US00163228 A US 00163228A US 3726215D A US3726215D A US 3726215DA US 3726215 A US3726215 A US 3726215A
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- US
- United States
- Prior art keywords
- anvil
- housing
- explosive
- explosive charge
- pieces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
Definitions
- ABSTRACT A compact destruct device which is designed to fit into the filler opening of a fuel cell in a critical air frame structure of an aircraft, for example.
- the device may be remotely controlled to terminate the flight of the aircraft if desired.
- the present invention relates to flight termination destruct means for use in remotely controlled aircraft, for example, which might otherwise endanger populated areas.
- flight termination systems used on F9 aircraft for example, consisted of an elongated box containing 43 pounds of explosives designed to cut the main structural member of the wings. The box was attached under the wing and besides being heavy and bulky it created additional air drag. According to the present invention flight is terminated by the function of an explosive charge installed in the filler opening, for example, of one or more inboard fuel cells.
- the device typically weights about 2.6 pounds and may be triggered by radio signal, which, through a series of coded electronic circuit configurations, operates safe and arm devices containing explosives components.
- FIG. 1 is a longitudinal cross sectional view of the first embodiment of the invention
- FIG. 2 is a longitudinal cross sectional view of a second embodiment
- FIG. 3 is a longitudinal cross sectional view of a third embodiment.
- FIG. 1 Indicated generally by numeral in FIG. 1 is a first embodiment of the invention designed to be placed in the fuel cell filler opening of an aircraft.
- the canister 11 is contoured to fit the filler opening and carries a top anvil member 12, a central anvil member 13 and a bottom anvil member 14. Between the anvils is a booster explosive plug 16 and surrounding the anvil members is an explosive 17 having a nylon inner liner 15.
- the detonating means is inserted so that a length of detonating cord 26 extends through the explosive members 16.
- the detonator means is connected to a safe and arm device in a manner disclosed in the above mentioned copending application, by a length of mild detonating cord 24.
- the canister is fitted with a cover plate 21 and a gasket 22. Obturating rings such as 18 and 19 may be placed where necessary in the assembly.
- the explosive device 50 shown in FIG. 2 is modified by having the ends of anvils 52, 53 and 54 tapered such that the explosive boosters 56, 57 act much on the order of a shaped charge device giving, in this case, a radial jet action.
- Explosives 51 may be the same as explosive 17 in FIG. 1.
- the canister, however, is greatly simplified in this embodiment.
- the embodiment 60 shown in FIG. 3, has a canister 11' substantially identical to the canister in FIG. I. In this embodiment, however, only one charge 63 is placed between a top anvil 62 and a bottom anvil 65.
- the explosive material 69 thus, extends the full length of canister 11. Illustrated also is the method of securing the skin 70 to the canister by means of screws 71,
- An explosive charge comprising: at least one piece of toroidal explosive material having an elongated body with top and bottom circular surfaces and a central bore;
- top and bottom anvil pieces each having a circular disk portion and a depending coaxial cylindrical portion; said disk portions abutting respectively the said top and bottom surfaces of said explosive charge with said depending portions extending into said bore;
- explosive booster means in said central bore between said depending portions
- detonating means passing through said top anvil and connecting with said booster means a cylindrical housing for said explosive charge
- top and bottom anvil pieces forming a top and bottom of said housing
- An explosive charge comprising two separate pieces of toroidal explosive material each having an elongated body with top and bottom circular surfaces 35 and a central bore:
- top and bottom anvil pieces each having a circular disk portion and a depending coaxial cylindrical portion
- detonating means passing through said top anvil and connecting with said booster means
- said explosive booster means including top and bottom booster pellets respectively filling spaces between the top anvil and the center anvil and between the center anvil and the bottom anvil;
- said detonating means further, passing through said center anvil.
- An explosive charge according to claim 2 further comprising:
- top and bottom anvil pieces forming a top and bottom of said housing
- An explosive charge according to claim 2 further comprising:
- a cylindrical housing for said explosive charge; said top and bottom anvil pieces forming a top and bottom of said housing; and means on said housing for securing the housing in an aircraft fuel cell filler opening and flush with sur- 5 rounding surfaces.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
A compact destruct device which is designed to fit into the filler opening of a fuel cell in a critical airframe structure of an aircraft, for example. The device may be remotely controlled to terminate the flight of the aircraft if desired.
Description
Bite Sttes Patent Colpitts et al.
[ 51 Apr. 10, 1973 EXPLOSIVE DESTRUCT DEVICE Inventors: David A. Colpitts; Ronald R.
Vigneault, both of Ridgecrest, Calif.
The United States of America as represented by the Secretary of the Navy Filed: July 16, 1971 Appl. No.: 163,228
Assignee:
U.S. Cl ..l02/24 R, 102/56 Int. Cl ..F42b 3/00 Field of Search ..102/24, 56, 67
References Cited UNITED STATES PATENTS l/l965 Urdapilleto -102/67 X Primary ExaminerVerlin R. Pendegrass Attorney-R. S. Sciascia et a1.
[57] ABSTRACT A compact destruct device which is designed to fit into the filler opening of a fuel cell in a critical air frame structure of an aircraft, for example. The device may be remotely controlled to terminate the flight of the aircraft if desired.
4 Claims, 3 Drawing Figures PATENTEDAPR] 01m sum 1 OF 3 Fig.1
PATENTEUAPR 1 01m 3,726,215
Fig. 2
PATENTEUAPR 1 3,726,215
sum 3 OF 3 EXPLOSIVE DESTRUCT DEVICE CROSS REFERENCE TO RELATED APPLICATION BACKGROUND OF THE INVENTION The present invention relates to flight termination destruct means for use in remotely controlled aircraft, for example, which might otherwise endanger populated areas.
The previous flight termination systems used on F9 aircraft, for example, consisted of an elongated box containing 43 pounds of explosives designed to cut the main structural member of the wings. The box was attached under the wing and besides being heavy and bulky it created additional air drag. According to the present invention flight is terminated by the function of an explosive charge installed in the filler opening, for example, of one or more inboard fuel cells. The device typically weights about 2.6 pounds and may be triggered by radio signal, which, through a series of coded electronic circuit configurations, operates safe and arm devices containing explosives components.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS FIG. 1 is a longitudinal cross sectional view of the first embodiment of the invention;
FIG. 2 is a longitudinal cross sectional view of a second embodiment; and
FIG. 3 is a longitudinal cross sectional view of a third embodiment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Indicated generally by numeral in FIG. 1 is a first embodiment of the invention designed to be placed in the fuel cell filler opening of an aircraft. The canister 11 is contoured to fit the filler opening and carries a top anvil member 12, a central anvil member 13 and a bottom anvil member 14. Between the anvils is a booster explosive plug 16 and surrounding the anvil members is an explosive 17 having a nylon inner liner 15. The detonating means is inserted so that a length of detonating cord 26 extends through the explosive members 16. The detonator means is connected to a safe and arm device in a manner disclosed in the above mentioned copending application, by a length of mild detonating cord 24. In this application, the canister is fitted with a cover plate 21 and a gasket 22. Obturating rings such as 18 and 19 may be placed where necessary in the assembly.
The explosive device 50 shown in FIG. 2 is modified by having the ends of anvils 52, 53 and 54 tapered such that the explosive boosters 56, 57 act much on the order of a shaped charge device giving, in this case, a radial jet action. Explosives 51 may be the same as explosive 17 in FIG. 1. The canister, however, is greatly simplified in this embodiment.
The embodiment 60, shown in FIG. 3, has a canister 11' substantially identical to the canister in FIG. I. In this embodiment, however, only one charge 63 is placed between a top anvil 62 and a bottom anvil 65. The explosive material 69, thus, extends the full length of canister 11. Illustrated also is the method of securing the skin 70 to the canister by means of screws 71,
5 72. One or more of these screws may be drilled as is the case with screw 72 to accept safety wire 73. In any of the embodiments, it may be desirable to add locking lugs 74 to fit the inner contour of certain fuel cell filler openings.
10 What is claimed is:
I. An explosive charge comprising: at least one piece of toroidal explosive material having an elongated body with top and bottom circular surfaces and a central bore;
top and bottom anvil pieces each having a circular disk portion and a depending coaxial cylindrical portion; said disk portions abutting respectively the said top and bottom surfaces of said explosive charge with said depending portions extending into said bore;
explosive booster means in said central bore between said depending portions;
detonating means passing through said top anvil and connecting with said booster means a cylindrical housing for said explosive charge;
said top and bottom anvil pieces forming a top and bottom of said housing; and
means on said housing for securing the housing in an aircraft fuel cell filler opening and flush with surrounding surfaces.
2. An explosive charge comprising two separate pieces of toroidal explosive material each having an elongated body with top and bottom circular surfaces 35 and a central bore:
top and bottom anvil pieces each having a circular disk portion and a depending coaxial cylindrical portion;
said disk portions abutting respectively the said top and bottom surfaces of said explosive charge with said depending portions extending into said central bore;
explosive booster means in said central bore between said depending portions; and
detonating means passing through said top anvil and connecting with said booster means;
a central circular anvil piece between said pieces of explosive material with first and second depending portions of said anvil piece extending on opposing sides thereof into respective ones of said pieces of explosive material;
said explosive booster means including top and bottom booster pellets respectively filling spaces between the top anvil and the center anvil and between the center anvil and the bottom anvil; and
said detonating means, further, passing through said center anvil.
3. An explosive charge according to claim 2 further comprising:
a cylindrical housing for said explosive charge;
said top and bottom anvil pieces forming a top and bottom of said housing; and
means on said housing for securing the housing in an aircraft fuel cell filler opening and flush with sur rounding surfaces. 4. An explosive charge according to claim 2 further comprising:
a cylindrical housing for said explosive charge; said top and bottom anvil pieces forming a top and bottom of said housing; and means on said housing for securing the housing in an aircraft fuel cell filler opening and flush with sur- 5 rounding surfaces.
Claims (4)
1. An explosive charge comprising: at least one piece of toroidal explosive material having an elongated body with top and bottom circular surfaces and a central bore; top and bottom anvil pieces each having a circular disk portion and a depending coaxial cylindrical portion; said disk portions abutting respectively the said top and bottom surfaces of said explosive charge with said depending portions extending into said bore; explosive booster means in said central bore between said depending portions; detonating means passing through said top anvil and connecting with said booster means a cylindrical housing for said explosive charge; said top and bottom anvil pieces forming a top and bottom of said housing; and means on said housing for securing the housing in an aircraft fuel cell filler opening and flush with surrounding surfaces.
2. An explosive charge comprising two separate pieces of toroidal explosive material each having an elongated body with top and bottom circular surfaces and a central bore: top and bottom anvil pieces each having a circular disk portion and a depending coaxial cylindrical portion; said disk portions abutting respectively the said top and bottom surfaces of said explosive charge with said depending portions extending into said central bore; explosive booster means in said central bore between said depending portions; and detonating means passing through said top anvil and connecting with said booster means; a central circular anvil piece between said pieces of explosive material with first and second depending portions of said anvil piece extending on opposing sides thereof into respective ones of said pieces of explosive material; said explosive booster means including top and bottom booster pellets respectively filling spaces between the top anvil and the center anvil and between the center anvil and the bottom anvil; and said detonating means, further, passing through said center anvil.
3. An explosive charge according to claim 2 further comprising: a cylindrical housing for said explosive charge; said top and bottom anvil pieces forming a top and bottom of said housing; and means on said housing for securing the housing in an aircraft fuel cell filler opening and flush with surrounding surfaces.
4. An explosive charge according to claim 2 further comprising: a cylindrical housing for said explosive charge; said top and bottom anvil pieces forming a top and bottom of said housing; and means on said housing for securing the housing in an aircraft fuel cell filler opening and flush with surrounding surfaces.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16322871A | 1971-07-16 | 1971-07-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3726215A true US3726215A (en) | 1973-04-10 |
Family
ID=22589032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00163228A Expired - Lifetime US3726215A (en) | 1971-07-16 | 1971-07-16 | Explosive destruct device |
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US (1) | US3726215A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2217818A (en) * | 1988-04-29 | 1989-11-01 | Aeci Ltd | Detonators. |
EP0561499A1 (en) * | 1992-03-18 | 1993-09-22 | Eev Limited | Explosive arrangements |
US5507231A (en) * | 1994-10-13 | 1996-04-16 | Thiokol Corporation | Solid fuel launch vehicle destruction system and method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3164091A (en) * | 1952-09-29 | 1965-01-05 | Urdapilleta Jose Luis Amilibia | Construction of projectiles |
-
1971
- 1971-07-16 US US00163228A patent/US3726215A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3164091A (en) * | 1952-09-29 | 1965-01-05 | Urdapilleta Jose Luis Amilibia | Construction of projectiles |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2217818A (en) * | 1988-04-29 | 1989-11-01 | Aeci Ltd | Detonators. |
EP0561499A1 (en) * | 1992-03-18 | 1993-09-22 | Eev Limited | Explosive arrangements |
US5507231A (en) * | 1994-10-13 | 1996-04-16 | Thiokol Corporation | Solid fuel launch vehicle destruction system and method |
WO1996012155A1 (en) * | 1994-10-13 | 1996-04-25 | Thiokol Corporation | Solid fuel launch vehicle destruction system and method |
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