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Otkrytoe Aktsionernoe Obschestvo Nauchno-proizvodstvennoe Obiedinenie

Gennady Grigorievich Derkach

Viktor Nikonorovich Semenov

Jury Vasilievich Movchan

Vladimir Konstantinovich Chvanov

Boris Ivanovich Katorgin

Alexandr Nikolaevich Vycherov

Anatoly Lukich Loginov

Valentin Georgievich Polushin

Anatoly Ivanovich Grigoriev

Vladimir Jurievich Bogushev

Alexandr Alexandrovich Vasin

Jury Alexandrovich Pestov

Nikolai Mikhailovich Grigorkin

Boris B Makhonov

Mikhail Ivanovich Zykov

Leonid Alexeevich Tumanov

Oleg Andreevich Masljukov

Vladimir A Kovtonjuk

Lev A Kuzmichev

Nikolai Kondratievich Dudkin

Nikolai Fedorovich Molev

Felix Jurievich Chelkis

Galina Andreevna Babaeva

Stanislav Dmitrievich Kamensky

Vladimir Vladimirovich Fedorov

Raisa Vasilievna Chernikova

Galina Vasilievna Shashelova

Ljudmila Alexandrovna Anosova

Evgeny Ivanovich Baranov

Jury Alexandrovich Bedov

Oleg Ivanovich Studenikin

Stanislav P Bogdanovsky

Vadim Iliich Semenov

Valentin A Kuryabin

Valery Petrovich Mordashov

Leonid Alexeevich Tolstikov

Vladimir Ilich Bobkov

Jury Aleksandrovich Pestov

Pavel Ivanovich Ogibalin

Larisa Mikhailovna Panaskina

Tatiana Mikhailovna Avsenjuk

Alexandr Konstantinovich Tretiakov

Margarita Borisovna Pestova

Vladimir Veniaminovich Sagalovich

A gas generator is produced of separate units, including a mixing head, a casing and an outlet branch pipe, which are interjoined by welding. The mixing head is welded to the outlet branch pipe through a spacer and a structural spherical casing. The spacer and the outlet branch pipe are made of two inter-brazed envelopes, the inner envelopes of the spacer and the branch pipe are welded at their end faces by electron-beam welding, and the outer structural envelopes are welded by electron-arc welding using a split ring. The spacer is joined to the mixing head by automatic gas-shielded welding. The spherical casing of the gas generator is welded to the outlet branch pipe and the mixing head after the spacer is welded to the mixing head and the outlet branch pipe.

Method for producing a gas generator of welded-brazed construction

The engine comprises a chamber, fuel and oxidizer booster pumps, a turbopump unit, a gas generator, an electrically driven thrust regulator, and a fuel throttle. A programmable starting and ignition system is introduced, which includes a fuel tank, connected to the thrust regulator, and a first ampoule with starting fuel, an output of which through a starting/cut-off valve is connected to fuel injectors of the gas generator. The aforesaid tank is also connected through a second ampoule to the starting fuel and by a jet to autonomous ignition injectors located in the space of the combustion chamber of the engine. An inclined Archimedian screw pump with a gas turbine as an actuator and an oxidizing gas as a working medium is used as an oxidizer booster pump. The gas is discharged after its use in a turbine into an outlet manifold of the booster pump. A heat exchanger, in which the gas used for rocket tank pressurization is heated, is mounted on a pipeline feeding the gas to the aforesaid gas turbine of the booster pump actuator.

Liquid-propellant rocket engine with turbine gas afterburning

The method for prodicing a multilayer thin-walled bellows of stainless steel consists of manufacturing round billets by welding the sheets, packing the round billets into a multilayer bank, corrugating the bank for forming the multilayer bellows and the bellows tightness testing. The round billets are manufactured of the preliminary cut sheets of given dimensions by their electric arc pulsed gas-shielded welding. The packed multilayer bank is welded from two sides over the end faces and subjected to heat treatment by its heating up to the temperature of 1000-1130&deg; C. in the shielding medium and holding at this temperature during 20-45 minutes with subsequent cooling.

Method for producing a multilayer thin-walled bellows of stainless steel

A method includes the round billet skelping, several runs of each round billet drawing up to a given size, packing the drawn billets into a multilayer bank, corrugating the bank with the bellows formation as a result and its heat treatment. Each round billet is skelped of the age-hardenable nickel alloy containing components of the following group: niobium, aluminum, titanium, tungsten and molybdenum. Each round billet is drawn, heated up to the temperature of 1000-1130&deg; C., held in the shielding medium at the above temperature, and cooled down, after that the above operations of drawing, heating, holding and cooling are repeated until the given size of each round billet is reached. The drawn round billets are packed into the multilayer bank and the bank is corrugated for forming the multilayer bellows. The heat treatment of the bellows is made by its heating up to the temperature of 1000-1130&deg; C., holding in the shielding medium at this temperature until the strengthening phase is completely dissolved in the alloy and subsequent cooling down to the temperature of the phase transition termination in the alloy. A rarefied air medium or argon are used as the shielding medium.

Method for producing multilayer thin-walled bellows

A method of making a welded joint for constructions of maraging steels consists of making a Y-shaped grooving of edges with a shrink groove in a weld seam root. The junction is assembled by tack weld using a chromium-plated filling wire at a direct polarity current. The welding is carried out by multiple runs of argon-carbon dioxide gas-shielded welding.

Method for making a welded joint

A combustion chamber for a liquid-propellant rocket engine includes an injector head jointed to a combustion chamber casing having an exhaust head on a nozzle output. The casing is made of a steel jacket and a bronze-steel internal fire wall, which are joined with each other and contain shells connected in series. The exhaust head with shells of the casing, jointed to the exhaust head, are brazed using a solder on the basis of nickel, chromium and manganese. Parts of the injector head and other members of the combustion chamber casing are brazed using a copper-silver solder. Shells of the fire wall are connected by an electron-beam welding, directing an electron beam into axial gaps left while brazing between shells of the jacket. The shells of the jacket are then sequentially connected by an automatic gas-shielded arc welding through corresponding ring spacers.

Method for producing a welded-brazed combustion chamber

Snow sled

Snow scooter

Growing community of inventors

Moscow, Russia

Gennady Grigorievich Derkach