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2 125 173

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IPC

(21) (22)

Application

98103166/06, 1998-02-20

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Actual filing date

1998-02-20

(45)

Published

1999-01-20

(72)

Inventor

Borisov O.G.Peturkin D.M.Filatov V.G.Gerasimov V.D.Denezhkin G.A.Semilet V.V.Kutsenko G.V.Nekrasov V.I.Shevrikuko I.D.Amarantov G.N.Smirnov V.D.Kuz'Mitskij G.Eh.Vronskij N.M.Lisovskij V.M.Grinberg S.I.Makarov L.B.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Im.S.M.KirovaPermskij Zavod Im.S.M.Kirova

SOLID-PROPELLANT ROCKET ENGINE Russian patent published in 1999 - IPC

Abstract RU 2125173 C1

FIELD: rocket engines. SUBSTANCE: this relates particularly to solid-propellant rocket engines with charges of high-pulse mixed solid propellants strongly connected with body, and they can be used in rockets (rocket projectiles) with hard-alloy engines and with fuels which are liable to vibration burning. Rocket engine has body, charge of solid propellant with igniting device, main chamber and additional chamber which are connected together through nozzle. End face of charge at side of body bottom part is made flat. Additional chamber is made in the form of hollow which is formed by body bottom part and front end face of charge. Nozzle is made as subsonic and it adjoins front end face of charge. Cross-section area of nozzle bore is determined according to following formula: F = KW/P*o

q(λ)^*τ_t, where K - calculating and experimental transient coefficient also taking into consideration outflow parameters of fuels used in charge and igniting device, w - initial volume of additional chamber, P*0

- retarding pressure created by igniting device, q(λ)^* - - reduced flow rate for λ<1, τ_t - operating period of igniting device. Aforesaid embodiment of engine enhances its operating stability. EFFECT: higher efficiency. 1 dwg

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RU 2 125 173 C1

Authors

Borisov O.G.

Peturkin D.M.

Filatov V.G.

Gerasimov V.D.

Denezhkin G.A.

Semilet V.V.

Kutsenko G.V.

Nekrasov V.I.

Shevrikuko I.D.

Amarantov G.N.

Smirnov V.D.

Kuz'Mitskij G.Eh.

Vronskij N.M.

Lisovskij V.M.

Grinberg S.I.

Makarov L.B.

Dates

1999-01-20—Published

1998-02-20—Filed