XLR13-AJ-7 Aerojet Nitric acid/Amine rocket engine. Modification of -AJ-1. Regeneratively cooled by fuel, droppable. |
XLR13-AJ-5 Aerojet Nitric acid/Amine rocket engine. Development begun June 1948. Ceramic chamber and nozzle, nitrogen pressure-fed, droppable but no recoverable. |