Vincent Black Prince The frame was also modified, re-siting the oil tank previously contained within the "Upper Frame Member" under the fuel tank, to underside of the new-design seat. A replacement single tubular strut bolted to the steering head and a single spring-damper unit replaced the twin rear shocks. The Black Prince was launched at the 1954 Earls Court motorcycle show, together with the 998 cc Vincent Black Knight and the 500 cc Vincent Victor (which never went into production as only the prototype was ever built). There was a lot of interest but much of it was critical, and the Black Prince
Black Prince (rocket) further development of the platform. The Black Prince itself has its origins in a proposed design was put forward by Desmond King-Hele and Doreen Gilmour of the Royal Aircraft Establishment (RAE) during 1957. As envisioned by this proposal, a expendable launch system could be developed using a mix of preexisting and in-development assets; the multi-stage launcher was to be formed of a Blue Streak first stage, a Black Knight (or Black Arrow) second stage, and a military solid rocket as a third stage. The proposal, which subsequently became widely known as the "Black Prince", quickly attracted the attention of a