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Yes, Russia used it in their long- and medium-ranged ballistic missiles. After a series of agreements between the US and Russia were reached both countries agre
by andrewl-hn 12y ago
Yes, Russia used it in their long- and medium-ranged ballistic missiles. After a series of agreements between the US and Russia were reached both countries agreed to reduce their arsenal ( https://en.wikipedia.org/wiki/START_I https://en.wikipedia.org/wiki/START_I ). As a result Russia has an excessive amount of Hydrazine in storage. It's expensive to store it because it's a very toxic and corrosive substance. At the same time it's pretty difficult to get rid of it.
At least in case of Angara they burn it at a high altitude.
- trhway 12y ago>Yes, Russia used it in their long- and medium-ranged ballistic missiles. oh, yea, donning these suits (during summer sunny day) before [imaginary] filling up your missile. Whatever militaristic enthusiasm, if any, we may have harbored (ROTC students, so not much to start with (ROTC in Russia is a way to avoid military, not to get into it:)), it'd definitely disappear half way through it and that even without having the real dangerously toxic and corrosive stuff present.
- Gravityloss 12y agoThe Briz upper stage is an existing design, it wasn't purpose built for Angara, it's been flying with various other rockets. Storable propellants are good for upper stages that need to do long coast periods and many stops and starts. Apollo used them. But there are multi-restart versions of lox-hydrogen stages. The RL-10 engine in Delta and Atlas can do it.