Is the Volga a redo of the original R-7 top stage?
I have information according to which Volga upper stage has a propulsion module called 14Д520.14Д520 consists of : - Main engine 17Д64 (КТД - корректирующе-тормозной двигатель) - Correction engines С5.142 (ЖРДМТ - жидкостных рулевых двигателей малой тяги). There is 16 engines of this type, dispatched in two groups of eight engines.
Методика тарировки бака окислителя первой ступени 132КС РН "Союз-2" этапа 1ву
Salo пишет:Не думаю, что это ошибка. Видимо на этапе 1ву планируется использование РД0110Р с высотным соплом и дросселируемого РД0124ДР на второй ступени.
Заправка и испытание тепловых труб изд.14С46 3-6Л.Испытания шар-баллонов, 132КС 4-6Л.Заправка и испытание тепловых труб, 14С46 3-6Л.Сотопанели 14С46 3-6Л.
Quote from: Prober on 12/16/2013 11:04 pmIs the Volga a redo of the original R-7 top stage?No.Volga is a lighter version of the venerable Ikar stage, which was used on some earlier Soyuz flights as an orbital maneuver stage (for Globalstar launches), but which is normally used as the service module for certain Russian military spacecraft. Ikar is basically the Samara knockoff of the Soyuz PAO, with many analogous components, and with very similar mass properties. Volga's dry mass is about 1/2 that of Ikar, but it has a similar propellant load.I believe that some Russian military spacecraft will use the Volga bus instead of the Ikar bus.
First thing I found was from anatoly zak: http://www.russianspaceweb.com/volga.htmlvery bad dry to wet mass ratio.
This is to remind everyone that there is another launcher besides Antares that uses NK-33.
as well as a first stage test article during a firing in 2013 (year ?).
Quote from: russianhalo117 on 11/03/2014 04:40 pmas well as a first stage test article during a firing in 2013 (year ?).16th August 2012.
Анализ допущенных отступлений от КД и ТД и оценка эффективности мер по их устранению при производстве изделий 14С46 №3-138, №6-138, 47КС №3Л, 14Ф148 №2
5 years from the date of the first launch of the Soyuz-2 light class LV of stage 1cDecember 28, 2018December 28, 2018 marks 5 years since the day of the first successful launch of the launch vehicle of the light class "Soyuz-2" of stage 1c, developed and manufactured by Progressing RC.The two-stage Soyuz-2 launcher of stage 1c is designed for launching spacecraft weighing up to 3 tons to a low near-earth orbit, and using the upper stage Volga to 1.4 tons - to a sun-synchronous orbit. This is the first light-class booster using liquid rocket engines, developed in modern Russia.The launch vehicle Soyuz-2 of stage 1c was developed with maximum use of structural elements, on-board systems, production and technological base, and unified technical and launch complexes available for a Soyuz-2 type launch vehicle. This has significantly reduced the cost of developing, operating and launching the launch vehicle.The booster is designed in a tandem pattern. The NK-33A engine (produced by PJSC Kuznetsov) and the RD0110R steering engine (developed by KBKHA and manufactured by the Voronezh Mechanical Plant) are installed on the central unit. To ensure the stability, controllability and operation of the Soyuz-2 control systems of stage 1c, a control system with a Soyuz-2 LV of stage 1b is used with the development of software and mathematical software and a change in instrumentation.To provide an energetically optimal scheme for launching payloads to medium circular orbits, as well as to sun-synchronous orbits in conjunction with the Soyuz-2 stage of stage 1c, the Volga launch unit developed and manufactured by RCC Progress is used.According to the results of the first launches as part of the flight design tests, a number of modifications were made to the Soyuz-2 launch vehicle of stage 1c. In particular, the volume of experimental measurements (pressure, temperature, vibration) on the blocks I, II of the LV and BV Volga was increased.The flight test program provides for 5 launch campaigns. At the end of 2018, there were 4 launches of this media.
In 2019, the final test flight is planned.What happens next? Are further launches planned?
Quote from: GWR64 on 01/06/2019 01:00 pmIn 2019, the final test flight is planned.What happens next? Are further launches planned?If they are able to return the money to Areojet for the engines earmarked originally Antares. There is couple more engines. The plan is to exhaust the engine supply and switch to RD-191/RD-181 that's used for Angara & Antares now. Now the trade off between Angara 1.2 and Soyuez 2-1v. One has more pads then the other and is flying now.