Long March CZ-7

Another day we were speaking about the future Chinese rocket Long March CZ-5 and as how his modular structure would serve to create several pitchers' families. It was rumored that one of these families, the Series 300, would be named a Long March CZ-7, but now it seems that we have official assertion on the name.
The design of the new Chinese rockets will allow to throw different versions using three types of modules, 5, 3,35 and 2,25 meters in diameter, respectively. The 5 meters module, H5, will use cryogenic fuels (liquid hydrogen and oxygen) with two engines YF-77 of 50 tons of propulsion at the level of the sea (67,3 t in the gap). The 3,35 m module, K3, will make use of kerosine and LOX (kerolox) together with two engines YF-100 of 120 t and 300-336 s of Isp. These engines will have aptitude to change his propulsion between 65-100 %. Finally, the 2,25 m module, K2, will use only one engine kerolox YF-100. Except the 5 m module, which can only be used like central stage, the others can be used like accelerating (boosters) or central modules. Long March CZ-5 - series 500 - will use combinations of all the modules and will have a maximum capacity in 25 tons LEO, while Long March CZ-6 and CZ-7 they will use the modules K3 and K2.
Long March CZ-7 (Series 300) would have a capacity maximum in LEO of 10 t and 6 t in GTO. The CZ-7 will include the second stage of kerolox K0 (8 x 3,35 m) with four engines of 15 t of propulsion. For throwings to GTO it will be possible to use a third cryogenic stage H0 3,35 m. The Series 200, or It Gives March CZ-6, the second stage incorporates kerolox of 8 x 2,25 m into an engine of 15 t. The smallest version of the Series 200 will be able to put in LEO 1,5 t.
The family CZ-7 - with capacity for 5-10 t in LEO - would be located this way between the children CZ-6 and the big one CZ-5. Since it is a question of a status of capacities at present offered by the rockets Long March hipergólicos already existing, the CZ-7 will be the family last to be introduced. The CZ-7 also will substitute the CZ-2F at the time of throwing the crewed ships Shenzhou and the laboratories Tiangong.



Use of the different modules to form several families (CZ-5, CZ-7 and CZ-6) with different versions (CALT).