Henry Spencer wrote:


Restartable and reusable.

Subject to the need for yet another fluid system, with the added
complexity that entails.

The catalyst is mixed into the peroxide just before injection into the
chamber. This cannot be done safely with a fuel but catalytic
decomposition is slow enought to give some time for mixing.

I have real doubts about that part of the idea. Catalystic decomposition
will not be slow with high-concentration peroxide and an effective liquid
catalyst mixed well together. Mixing *in* the chamber sounds both better
and safer.

Once the rocket is firing, is it possible to use non catalysed HTP?