high-test peroxide is very unpleasant stuff, and so is nitric acid. better to just run on ordinary jet fuel and get oxidizer from the atmosphere - again, an lpre suitable for this application *needs turbomachinery anyway.* also, although combustion is self-sustaining once you've started it, arranging for ignition at startup isn't a trivial business; it's additional complexity and a potential failure point.   the lancet runs on batteries; it's electrically-powered. just replacing the electric motor with a small reciprocating engine would be an improvement, i suspect, at least in terms of payload-range capability - but it'd be a lot louder.   i hope you're not offering up the likes of cairo or alexandria as a positive example.
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