| The unpiloted vehicle's supersonic combustion ramjet, or scramjet, ignited as planned and operated for the duration of its hydrogen fuel supply. |
| Like the comparatively slower ramjet counterpart, the scramjet has a simple mechanical design with no moving parts. |
| As you mention, a ramjet needs to fly supersonically, which a V1 flying bomb did not. |
| Plans called for a Marquardt ramjet to power Rigel, whose all-up weight was 19,000 pounds with booster. |
| The ramjet went through a number of experimental stages during the 20th century, but never reached production. |
| The engine, which will be provided by the Air Force, will be a dual-mode scramjet capable of running as a ramjet or scramjet. |
