FR2235284A1 - Propellant block for rockets - with lateral combustion notch and associated flats - Google Patents

Propellant block for rockets - with lateral combustion notch and associated flats

Info

Publication number
FR2235284A1
FR2235284A1 FR7323916A FR7323916A FR2235284A1 FR 2235284 A1 FR2235284 A1 FR 2235284A1 FR 7323916 A FR7323916 A FR 7323916A FR 7323916 A FR7323916 A FR 7323916A FR 2235284 A1 FR2235284 A1 FR 2235284A1
Authority
FR
France
Prior art keywords
block
combustion
notch
flats
lateral
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
FR7323916A
Other languages
French (fr)
Other versions
FR2235284B1 (en
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.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
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 Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Priority to FR7323916A priority Critical patent/FR2235284A1/en
Publication of FR2235284A1 publication Critical patent/FR2235284A1/en
Application granted granted Critical
Publication of FR2235284B1 publication Critical patent/FR2235284B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

Propellant blocks, for lateral combustion are partic. intended for rocket propulsion. The block is cylindrical and has a lateral notch parallel to the axis of the block and symmetrical to a diametrical plane of the block; the notch is connected to the external surface by two symmetrical flats. The block has a relative combustion thickness of e/R (in which R is the radius of the block and e the combustion thickness) which can vary between 0.5 and 1.55. The flats lead to a practically constant rate of combustion with a low residual figure, e.g. the amt. of the unburnt portion when the press. is no longer sufficient for normal operation. The blocks can easily be obtd. by moulding a base mixt. of polyurethane resin, potassium perchlorate and ballistic additives. The combustion surface remains constant so that a constant thrust is obtd. throughout the trajectory.
FR7323916A 1973-06-29 1973-06-29 Propellant block for rockets - with lateral combustion notch and associated flats Granted FR2235284A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7323916A FR2235284A1 (en) 1973-06-29 1973-06-29 Propellant block for rockets - with lateral combustion notch and associated flats

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7323916A FR2235284A1 (en) 1973-06-29 1973-06-29 Propellant block for rockets - with lateral combustion notch and associated flats

Publications (2)

Publication Number Publication Date
FR2235284A1 true FR2235284A1 (en) 1975-01-24
FR2235284B1 FR2235284B1 (en) 1976-04-30

Family

ID=9121795

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7323916A Granted FR2235284A1 (en) 1973-06-29 1973-06-29 Propellant block for rockets - with lateral combustion notch and associated flats

Country Status (1)

Country Link
FR (1) FR2235284A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1341801A (en) * 1962-11-29 1963-11-02 Thiokol Chemical Corp Solid rocket propellant powder
US3503334A (en) * 1966-09-30 1970-03-31 Dynamit Nobel Ag Solid propellant charge for rockets

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1341801A (en) * 1962-11-29 1963-11-02 Thiokol Chemical Corp Solid rocket propellant powder
US3503334A (en) * 1966-09-30 1970-03-31 Dynamit Nobel Ag Solid propellant charge for rockets

Also Published As

Publication number Publication date
FR2235284B1 (en) 1976-04-30

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Legal Events

Date Code Title Description
ST Notification of lapse