Gorgeous Grumman LM brochure. The company was deservedly proud of their ugly duckling spacecraft. Grumman’s LM accomplished all their mission tasks with flying colors.
The lunar ascent phase was just another program critical scenarios; The LM Bell Ascent Propulsion System (APS) either worked o not….,no back-ups. The key: employ a “uncomplicated” pressure-fed hypergolic propellants rocket engine.