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DE1100525B - Shaped solid propellant, especially for driving impact tools - Google Patents

Shaped solid propellant, especially for driving impact tools

Info

Publication number
DE1100525B
DE1100525B DEG28547A DEG0028547A DE1100525B DE 1100525 B DE1100525 B DE 1100525B DE G28547 A DEG28547 A DE G28547A DE G0028547 A DEG0028547 A DE G0028547A DE 1100525 B DE1100525 B DE 1100525B
Authority
DE
Germany
Prior art keywords
powder body
solid propellant
shaped solid
combustion chamber
impact tools
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.)
Pending
Application number
DEG28547A
Other languages
German (de)
Inventor
Dr Georg Groetsch
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEG28547A priority Critical patent/DE1100525B/en
Priority to CH1322260A priority patent/CH398414A/en
Priority to SE1184360A priority patent/SE308685B/xx
Priority to GB4244160A priority patent/GB959023A/en
Publication of DE1100525B publication Critical patent/DE1100525B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K9/00Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/32Constructional parts; Details not otherwise provided for
    • F02K9/34Casings; Combustion chambers; Liners thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K9/00Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/10Shape or structure of solid propellant charges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00Explosive charges characterised by form or shape but not dependent on shape of container
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02Cartridges, i.e. cases with charge and missile
    • F42B5/16Cartridges, i.e. cases with charge and missile characterised by composition or physical dimensions or form of propellant charge, with or without projectile, or powder

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Geformter Feststofftreibsatz, besonders für den Antrieb von Schlagwerkzeugen Es sind Pulverkörper zum Antrieb von Geschossen in verschiedenen Formen bekanntgeworden. Die Abbrennung dieser Pulverkörper erfolgt entweder von außen oder gleichzeitig von außen und innen, wenn derselbe beispielsweise eine Bohrung aufweist, in welcher die Zündflamme die Verbrennung auslöst. Bei der Verbrennung dieser Pulverkörper nimmt bekanntlich deren Oberfläche ständig ab, so daß die entstehende Gasmenge zum Antrieb auch kleiner wird. Für Aufgaben des Werkzeugbaues, wo z. B. zum Antrieb eines Stoßmeißels nur ein sehr kleiner Antriebsweg vorgesehen werden kann, sind daher Pulverkörper in herkömmlicher Bauweise nachteilig. Dieser Nachteil ist erfindungsgemäß dadurch zu beheben, daß man einen beispielsweise röhrenförmigen Pulverkörper außenseitig mit Rippen versieht, welche an der Brennkammer anliegen, so daß der Zünddruck die zwischen den Rippen liegenden Furchen des Pulverkörpers von innen an die Brennkammerwandung preßt, wobei der Pulverpreßling zerbricht und eine große Verbrennungsoberfläche bildet.Shaped solid propellant, especially for driving impact tools Powder bodies for propelling projectiles in various forms have become known. The burning off of these powder bodies takes place either from the outside or at the same time from outside and inside, if it has, for example, a bore in which the pilot flame triggers the combustion. When burning this body of powder is known to decrease their surface constantly, so that the amount of gas produced for Drive is also getting smaller. For tasks in tool making, where e.g. B. to drive of a push chisel only a very small drive path can be provided therefore powder bodies in conventional construction are disadvantageous. This disadvantage is in accordance with the invention to remedy that, for example, a tubular powder body on the outside provided with ribs which rest against the combustion chamber, so that the ignition pressure the Grooves of the powder body lying between the ribs from the inside to the combustion chamber wall presses, with the powder compact breaking and a large combustion surface forms.

In Fig. 1 bis 5 sind Ausführungsbeispiele des Erfindungsgegenstandes dargestellt. Fig. 1 und 2 zeigen die Anordnung einer Brennkammer mit Pulverkörper zum Antrieb eines Meißels .im Längs- und Querschnitt. Die Brennkammer 1 enthält den Brennraum 2 mit dem Pulverkörper 3 und der Zündkartusche 4. Der Pulverkörper zeigt die Rippen 5. Durch die Zündung der Zündkartusche 4 mit bekannten Mitteln, z. B. Schlagbolzen, strömen die Gase aus der Zündkartusche in die Bohrung 6 des Pulverkörpers. Der in der Bohrung 6 entstehende Differenzgasdruck gegenüber dem auf der Außenseite 7 des Pulverkörpers wirksamen Gasdruck zerlegt den Pulverkörper in kleine, vorwiegend streifenförmige Teile. Es vergrößert sich die Verbrennungsoberfläche gegenüber der ursprünglichen Oberfläche des Pulverkörpers um ein Vielfaches. Da die Verbrennungsgeschwindigkeit proportional zur Oberfläche des Pulvers steht, so vergrößert sich der Gasdruck zum Antrieb des Meißels 8, welcher an der Schulter 8 a anliegt und in der Führung 9 längsaxial gleitbar ist, um ein Vielfaches. Der höhere Gasdruck aber bedingt eine Verkürzung des Antriebsweges 10, der vorgesehen werden muß, damit der Meißel beim Auftreffen auf dem Zerkleinerungsgut il die erforderliche Wucht besitzt.1 to 5 are exemplary embodiments of the subject matter of the invention shown. Fig. 1 and 2 show the arrangement of a combustion chamber with powder body for driving a chisel. in longitudinal and cross-section. The combustion chamber 1 contains the combustion chamber 2 with the powder body 3 and the ignition cartridge 4. The powder body shows the ribs 5. By igniting the ignition cartridge 4 by known means, z. B. firing pin, the gases flow from the ignition cartridge into the bore 6 of the Powder body. The differential gas pressure arising in the bore 6 compared to the The gas pressure acting on the outside 7 of the powder body breaks down the powder body into small, predominantly strip-shaped parts. The combustion surface increases compared to the original surface of the powder body many times over. There the burning rate is proportional to the surface area of the powder, so increases the gas pressure to drive the chisel 8, which is on the shoulder 8 a is applied and can be slid axially longitudinally in the guide 9, many times over. Of the but higher gas pressure causes a shortening of the drive path 10, which is provided must be so that the chisel when hitting the material to be crushed il the required Possesses momentum.

Eine in bezug auf die Vergrößerung der Verbrennungsoberfläche zusätzlich wirksame Maßnahme besteht darin, den Pulverkörper nach Fig. 3 mit mehreren Innenbohrungen 12 und mit Rippen 13 zu versehen. Zur Unterstützung der Bruchbildung des Pulverkörpers kann man ferner die Kerben 14 vorsehen, Fig. 4.One more in relation to the enlargement of the combustion surface An effective measure is to provide the powder body according to FIG. 3 with a plurality of inner bores 12 and to be provided with ribs 13. To support the breakage of the powder body the notches 14 can also be provided, FIG. 4.

Anstatt den Pulverkörper mit Rippen zu versehen, kann man umgekehrt auch in die Brennkammer 1 nach Fig. 5 entsprechende Nuten 15 anordnen und im übrigen einen außen glatten Pulverkörper vorsehen, welcher von der inneren Bohrung 6 aus vom Differenzgasdruck in die Nuten 15 gepreßt wird, zerbricht und auf diese Weise in eine entsprechend große Oberfläche zerlegt wird.Instead of providing the powder body with ribs, you can do the opposite also arrange corresponding grooves 15 in the combustion chamber 1 according to FIG. 5 and otherwise provide an externally smooth powder body which extends from the inner bore 6 is pressed by the differential gas pressure in the grooves 15, breaks and in this way is broken down into a correspondingly large surface.

Claims (2)

PATENTANSPRÜCHE: 1. Geformter Feststofftreibsatz, besonders für den Antrieb von Schlagwerkzeugen, nach Art eines Innenbrenners, dadurch gekennzeichnet, daß der in an sich bekannter Weise mit einer oder mehreren axialen, dem primären Abbrand dienennenden Bohrungen versehene Pulverkörper mit Soll-Bruchstellen versehen ist, in dem er mit seiner Außenseite nur strich- bzw. zonenartig, und zwar achsparallel, an der Innenwandung der Brennkammer anliegt. PATENT CLAIMS: 1. Shaped solid propellant, especially for driving impact tools, in the manner of an internal burner, characterized in that the powder body, which is provided in a manner known per se with one or more axial bores serving for primary combustion, is provided with predetermined breaking points, in which it rests with its outside only in a line or zone-like manner, namely axially parallel, on the inner wall of the combustion chamber. 2. Geformter Feststofftreibsatz nach Anspruch 1, dadurch gekennzeichnet, daß das strich-bzw. zonenartige Anliegen des Pulverkörpers an die Brennkammerwandung durch eine rippen- oder kerbenartige Oberflächengestaltung der Außenseite des Pulverkörpers oder der Innenseite der Brennkammer bewirkt ist. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 1016 171.2. Shaped solid propellant charge according to claim 1, characterized in that the line or. zone-like contact of the powder body on the combustion chamber wall is brought about by a rib-like or notch-like surface design of the outside of the powder body or the inside of the combustion chamber. Publications considered: German Patent No. 1016 171.
DEG28547A 1959-12-10 1959-12-10 Shaped solid propellant, especially for driving impact tools Pending DE1100525B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEG28547A DE1100525B (en) 1959-12-10 1959-12-10 Shaped solid propellant, especially for driving impact tools
CH1322260A CH398414A (en) 1959-12-10 1960-11-25 Shaped solid propellant with associated combustion chamber and use of the same
SE1184360A SE308685B (en) 1959-12-10 1960-12-07
GB4244160A GB959023A (en) 1959-12-10 1960-12-09 Shaped solid propellant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG28547A DE1100525B (en) 1959-12-10 1959-12-10 Shaped solid propellant, especially for driving impact tools

Publications (1)

Publication Number Publication Date
DE1100525B true DE1100525B (en) 1961-02-23

Family

ID=7123514

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG28547A Pending DE1100525B (en) 1959-12-10 1959-12-10 Shaped solid propellant, especially for driving impact tools

Country Status (2)

Country Link
CH (1) CH398414A (en)
DE (1) DE1100525B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380529A1 (en) * 1977-02-14 1978-09-08 Serat Propulsive charge for projectiles, missiles or rockets - incorporating longitudinal inclined elements giving rotation, minimising weight, complexity and cost

Also Published As

Publication number Publication date
CH398414A (en) 1966-03-15

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