IMHO It will really sad if ISRO goes forward with this design. I would rather have prefered the HLV to be part of ULV (which will be replacement for PSLV standard and -XL and GSLV, LVM3 in long term) making use of the common core booster. This would have resulted in an HLV similar in architecture to Angara - A5. Alas, ISRO is hell bent on using solids on each and every launch vehicle. Using an Anagar A5 like architecture would enabled mass production of the CLC stages thereby reducing costs and complexity.
Quote from: johnxx9 on 08/14/2015 05:05 pmIMHO It will really sad if ISRO goes forward with this design. I would rather have prefered the HLV to be part of ULV (which will be replacement for PSLV standard and -XL and GSLV, LVM3 in long term) making use of the common core booster. This would have resulted in an HLV similar in architecture to Angara - A5. Alas, ISRO is hell bent on using solids on each and every launch vehicle. Using an Anagar A5 like architecture would enabled mass production of the CLC stages thereby reducing costs and complexity.The sad part is the multiplication of solid tooling lines. S12->1m, S139->2.8m, S200->3.2m, and who knows what's going to be the S250. A single solid with something like 25 to 30 tonnes of propellant would have reduced the total number of stage pipelines to just three. I believe that they will eventually go that way, though.
HLV may be part of the ULV afterall !!
8.8Cryogenic Propulsion Systems Development in ISROV. NARAYANANFUTURE PLANSISRO is designing heavy-lift launch vehicles with capabilities in the range of 6-10 tonnes in GTO. For this purpose, the following propulsion systems are being pursued:A 200 tonne propellant loading LOX and kerosene booster stage powered by a 2,000 kN thrust semi-cryogenic engine operating on stage combustion cycle.A 50 tonne LOX-LH2 propellant loading cryogenic stage powered by twin CE 20 cryogenic engines.A 10 tonne LOX-LH2 propellant loading cryogenic stage powered by a CE 20 cryogenic engine.
I wonder the upper stage of HLV have structural similarity with that of TSTO. the clustered CE20 will also be used in the TSTO. the C10 stage is new to me. seems for manned or planetary exploration?
What are the small "pipes" on the boosters? Are they additional very small and fast-burning boosters burning practicall only for takeoff? or something else?
A research and technological program called VOLGA was initiated recently between European and Russian industries. Its main objective is the conception of a LOX/CH4 engine for RLV or large liquid reusable booster application.
Indian Space Research Organisation (Isro) has plans to build its heaviest rocket that can carry satellites weighing 10 communication tonnes into space.The space agency's Geosynchronous Satellite Launch Vehicle (GSLV-MkII) currently has the capability to carry satellites weighing in at just two tonnes. India's heaviest rocket would be powered by a semi-cryogenic engine - that runs on kerosene and liquid oxygen, which the space agency is currently developing. Semi-cryogenic engines are environment friendly and bring down the cost of launches significantly. The design process for the semi-cryogenic engine is completed and is being built by Godrej Aerospace, which also makes the Vikas engines for Isro's rockets. "Once we have this engine, we will have different levels of launch vehicles possible. Currently the GSLV MK 3 uses the CE20 engine and once we put the semi cryogenic engine in such a combination, we will have a much bigger rating, which will have a payload capability of 10 ton," said S. Somanath, project director of the GSLV Mk III at Isro. He did not set a time frame for the rocket development. Last year, Isro tested a demonstrator of its heavier class of rocket, the GSLV Mk III, designed to hurl 4 tonne class communication satellites into space. The CE20 engine which the rocket uses is an indigenously developed cryogenic engine. A full fledged rocket with a communication satellite will be launched in 2017. "One of the launch vehicle...will look like the GSLV Mk 3 but it will be much taller, almost 65 metres, weighing almost 732.6 tons at liftoff and it is capable of putting a 10 ton space plant in communication orbit," said Somanath.Isro currently sends its 4 tonne communication satellites used for satellite broadcasting on Arianespace rockets of the European Space Agency.Somanath said that Isro would work on a modular vehicle approach, using the same platform to extend the power of its rockets than build separate rockets."..we thought that we will go in a modular way. It will be possible for nearly 6 ton payload capability and if required we will be able to change to our full 10 tonne launch vehicle with little bit of addition," he said.Meanwhile, Isro will launch its fifth of the seventh regional navigation satellite on January 20. The satellite will be part of India's constellation of geo-positioning satellites that would help in disaster management, mapping and navigation, said Isro director M Annadurai.
ISRO chief on prospective HLV designs after the advent of Falcon HeavyBottom line: They have designs based on clustered Kerolox engines (SCE-200) in the drawing board. But its a long way off. Current emphasis is on realizing SCE-200 engine and the subsequent development of single engine SC200 stage to enhance the capability of GSLV MkIII.
