CA2495495A1 - Propellant extrusion using shaped perforation pins - Google Patents

Propellant extrusion using shaped perforation pins Download PDF

Info

Publication number
CA2495495A1
CA2495495A1 CA002495495A CA2495495A CA2495495A1 CA 2495495 A1 CA2495495 A1 CA 2495495A1 CA 002495495 A CA002495495 A CA 002495495A CA 2495495 A CA2495495 A CA 2495495A CA 2495495 A1 CA2495495 A1 CA 2495495A1
Authority
CA
Canada
Prior art keywords
propellant
length
extruded
unburned
separated
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.)
Granted
Application number
CA002495495A
Other languages
French (fr)
Other versions
CA2495495C (en
Inventor
William J. Worrell, Jr.
Marlon D. Harris
Leslie P. Gabrysch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northrop Grumman Systems Corp
Original Assignee
Alliant Techsystems Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alliant Techsystems Inc filed Critical Alliant Techsystems Inc
Publication of CA2495495A1 publication Critical patent/CA2495495A1/en
Application granted granted Critical
Publication of CA2495495C publication Critical patent/CA2495495C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/10—Shape or structure of solid propellant charges
    • F02K9/18—Shape or structure of solid propellant charges of the internal-burning type having a star or like shaped internal cavity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

An extruded stick-type propellant grain is disclosed that includes a length separated from a strand of extruded propellant material having a predetermined cross-sectional shape provided with a predetermined number of spaced, radially distributed, hollow non-round longitudinal perforations formed in said length of propellant material parallel to and extending along the length thereof and separated and surrounded by a web of the propellant material. The perforations have a geometric cross section selected from the group consisting of non-round shapes that enhance uniformity in unburned web thickness during a normal burn of said length of extruded propellant thereby reducing the amount of unburned slivers. A central perforation is also provided.
CA002495495A 2004-03-03 2005-01-31 Propellant extrusion using shaped perforation pins Active CA2495495C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/792,431 2004-03-03
US10/792,431 US20050193915A1 (en) 2004-03-03 2004-03-03 Propellant extrusion using shaped perforation pins

Publications (2)

Publication Number Publication Date
CA2495495A1 true CA2495495A1 (en) 2005-05-08
CA2495495C CA2495495C (en) 2006-09-12

Family

ID=34574864

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002495495A Active CA2495495C (en) 2004-03-03 2005-01-31 Propellant extrusion using shaped perforation pins

Country Status (2)

Country Link
US (1) US20050193915A1 (en)
CA (1) CA2495495C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3014185B1 (en) * 2013-12-04 2016-10-28 Herakles PYROTECHNIC LOADING AND GAS GENERATOR COMPRISING SUCH LOADING
US10066911B1 (en) 2014-08-29 2018-09-04 Orbital Atk, Inc. Methods of preparing nitrocelluse based propellants and propellants made therefrom
US9395164B1 (en) 2014-08-29 2016-07-19 Orbital Atk, Inc. Methods of preparing nitrocelluse based propellants and propellants made therefrom

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US751385A (en) * 1904-02-02 Cleland davis
US622777A (en) * 1899-04-11 Powder-grain
US353681A (en) * 1886-12-07 Die for forming conduits or pipes
US694295A (en) * 1899-08-24 1902-02-25 Hudson Maxim Cartridge.
US677528A (en) * 1899-08-24 1901-07-02 Hudson Maxim Cartridge.
US1077320A (en) * 1913-02-20 1913-11-04 James L Walsh Powder-grain.
US3022735A (en) * 1957-10-10 1962-02-27 Phillips Petroleum Co Solid rocket propellants
US3054353A (en) * 1958-09-23 1962-09-18 Norman L Rumpp Segment grain
US3066481A (en) * 1958-11-03 1962-12-04 Phillips Petroleum Co Propellant expansion joint
US3494286A (en) * 1968-04-17 1970-02-10 Us Air Force Hybrid fuel grain sliver reduction
NO113574C (en) * 1975-05-10 1985-08-14 Dynamit Nobel Ag SINGLE OR MULTIPLE BASIC POWDER FOR DRIVE CHARGES AND PROCEDURES FOR THEIR PREPARATION
US5119627A (en) * 1989-11-03 1992-06-09 American Rocket Company Embedded pressurization system for hybrid rocket motor
FR2679992B1 (en) * 1991-08-01 1993-09-24 Poudres & Explosifs Ste Nale MULTIPERFORESTED AND DIVIDED PROPULSIVE POWDER STRANDS, MANUFACTURING APPARATUS AND USE THEREOF.
US5620205A (en) * 1994-03-14 1997-04-15 Morton International, Inc. Gas generation and ignition system for airbag inflation
US5623115A (en) * 1995-05-30 1997-04-22 Morton International, Inc. Inflator for a vehicle airbag system and a pyrogen igniter used therein
FR2761982B1 (en) * 1997-04-11 1999-05-07 Livbag Snc PROCESS FOR ENSURING A PROGRESSIVE DEPLOYMENT OF A PYROTECHNIC PROTECTION AND LOADING CUSHION FOR ITS IMPLEMENTATION
NO312264B1 (en) * 2000-11-14 2002-04-15 Nammo Raufoss As Pyrotechnic charge structure

Also Published As

Publication number Publication date
CA2495495C (en) 2006-09-12
US20050193915A1 (en) 2005-09-08

Similar Documents

Publication Publication Date Title
ATE494865T1 (en) SPIRAL-SHAPED STENT WITHOUT SHORTENING
EP2233264A3 (en) Die for forming honeycomb structure and manufacturing method of the same
CA2578236A1 (en) Apparatus and method for improving the dimensional quality of extruded food products having complex shapes
WO2006065568A3 (en) Sheet bending method and sheet
US20080066423A1 (en) Method And Apparatus For Providing Multiple Tile Shapes Or Appearances Of Same
JP2007503291A5 (en)
WO2008112417A3 (en) Co-extruded tissue grasping monofilament
ATE285886T1 (en) EXTRUSION NOZZLE FOR HONEYCOMB STRUCTURE
EP1813231A4 (en) Stent for vessel
WO2008103021A3 (en) Device and method for producing a food item of rolled dough
ES455125A1 (en) Process for manufacturing high strand count plastic net
CA2495495A1 (en) Propellant extrusion using shaped perforation pins
BE1015661A3 (en) Method for producing a mattress core and composite spring applied thereby.
RU2005100753A (en) CERAMIC NOZZLE ELEMENT AND METHOD FOR FORMING A LAYER OF NOZZLE ELEMENTS
EP1591525A3 (en) Oligoribonucleotides for the treatment of irritative and/or inflammatory skin symptoms by RNA interference
KR950030825A (en) Pretzel and its manufacturing method
EP1615536B8 (en) Improvements in convenience rolls
WO2006026301A3 (en) Open cavity extrusion dies
DE60009582D1 (en) Highly effective and selective catalysts for the production of unsaturated nitriles, process for their use
EP2138290A3 (en) Method for manufacturing a honeycomb structure
WO2004000185A8 (en) Method of producing a corrugated tampon applicator
WO2001011992B1 (en) Method and apparatus for producing stranded, ground, meat products and the products so produced
WO2006002065A3 (en) Die and method for extruding end-plugged honeycomb filters
JP6382582B2 (en) Extrusion mold and method for producing molded body
JP2007537810A5 (en)

Legal Events

Date Code Title Description
EEER Examination request