first I want to talk about orbex , a planned rocket company which will operate a single launch vehicle.
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This is quite an interesting rocket for multiple reasons. First of all it's propellant is propane and liquid oxygen which is quite rare in the aerospace industry. Also quite interesting is their plan to use coaxial fuel tanks with the different tanks being located inside eachother so the liquid oxygen surrounds the propane. Orbex claims this design decreases the propellant tanks' mass because the liquid supports the weight of the tank , allowing for reduced mass being used for supports.
Because the liquid oxygen surrounds the propane , the fuel gets some better density and specific impulse through some sort of science I don't understand.
The rocket itself would weigh 18 tonnes and would stand 19 meters on the launch pad ( planned to be at Sutherland )
The structural components will be mainly aluminium and carbon fibre composites. The first stage will be propelled by six engines each with a turbopump , the second stage will use a pressure fed engine. This however may change.
The payload of this rocket will be 225kg to sun synchronous orbit ( because of its launch site only having access to northbound launches ) which is a bit better than rocket lab's electron rocket.
The first test launches are expected for 2021.
I'll post something on skyrora later once I've done some research