sentences:  According to Gerald Pawle, an engineer working on the project, the Lagonda flamethrower universally inspired both awe and horror in all staff officers invited to watch the demonstrations.Further refinements were made to the design which increased its effective range to , though a much larger quantity of fuel was needed to maintain the flame for any significant period of time.A trial at sea was arranged to test the effectiveness of the weapon as a deterrent to German aircraft.