- Jun 6, 2016
What type of spacecraft design are you expecting ?? I am taking the design of RLV - TD as the main structure of spacecraft . In which , rocket engine will accelerate the vehicle and then cut off . Then scramjet engine is vehicles main engine .http://www.isro.gov.in/launchers/rlv-td
its will be two stage.. the scaled fuselage with wings will be first stage having semi-cryo engine at its end like rockets.. this thing will be mosterous in size.. this semicryo engine will be used for take off pushing the RLV to mach 5 as quickly as possible.. the launch will be vertical. on reaching near mach 5 the scramjet will be fired (semicryo engine will remain opertaional) this scramjet will add extra trust to the RLV upto 80 km i think(mesoshere) beyond mesosphere there is no oxygen.mesosphere consist of 99% of atmoshphere..
and space begins as 100 km (karamlin line)..
on reaching 80 km scramjet will be cut off ,, the semicryo engine(which already is running) will take the rest of the responsibility in pushing the rocket beyond 100 km (since atmosphere is now very thin 1%.. this will generate enormous thrust with no drag)-due to no drag the extra velocity generated by scramjet
will be sustained.
after 100 km the RLV will realease its nose (the 2nd part) and the first winged part will glide down to runway.. the 2nd(nose part) has its own semi-cryo engine which it will use to attain a desired orbit,release the sat and deorbit and land using parachute..
the scramjet is just used to proved extra thrust using atmospheric oxygen .saving a large amount of fuel..
my only concern is in midflight.. whether the semicryo engine and scramjet will work in union or scramjet will operate alone in midflight..
THIS RLV BASICALLY IS A SMART ROCKET.. THAT LOOKS LIKE A SPACE-CRAFT.
there is no oxygen collection as far as i know but if it does then we can reduce the weight further by generating LOX for the second stage in midflight...
@rishivashista13 @Indx TechStyle @Anupu
How is it possible that scramjet engine cut offs and rocket engine is operational till end (what you mentioned) ??
As I know , rocket engine will be recovered after it cut off .
Then Vehicle will use its main engine for all other process .
Vehicle is not having payload on its nose but payload will be kept inside it (in stomach) . Doors will open and it will place the payload wherever required .
Then vehicle will come back and land on the runway successfully .
All things which I right here is mixture of information I got from different places (internet , tv news , newspapers) .
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