Re:SpaceX is now building a Raptor engine a day, NASA says
by orbital-decay on Thursday November 03, 2022 @12:09AM
(#33446869)
Or just a hybrid HTHL vehicle, think SpaceShipTwo with an additional airbreathing engine and some thermal protection instead of a fancy feathered system (not feasible at high velocities). Take off on a quiet engine, get away from cities, make a rocket-powered suborbital jump, vomit in between, re-enter, land quietly across the pond.
(still sounds handwavy and not very realistic, though)
Re:SpaceX is now building a Raptor engine a day, NASA says
by LargoLasskhyfv on Thursday November 03, 2022 @10:30AM
(#33451564)
That sounds like Reaction Engines Skylon / Lapcat A2.
https://en.wikipedia.org/wiki/SR.N4
https://en.wikipedia.org/wiki/HSC_Francisco
Maybe a future revival of https://en.wikipedia.org/wiki/Ground-effect_vehicle ?
Or some shiny airtaxi vtol running on renewables, electricity, handwavium?