The A series rockets used simple pressure feed, gyroscopic control by means of vanes, and parachute. The rockets in this series averaged in length from 4.11 m to 4.65 m.; their weight empty varied from 26 kg to 39 kg.
Total Mass: 39 kg. Total Length: 4.7 m.
This funding would continue through 1941. The first test series was designated the A Series (A1-A14). The A series rockets used simple pressure feed, gyroscopic control by means of vanes, and parachute. The rockets in this series averaged in length from 13 ft 6 in. to 15 ft 3 1/4 in.; their weight empty varied from 58 lb to 85 lb.
Rocket had no automatic guiding device; short and rapid flight, during which the parachute was released and checked the fall.
Rocket was equipped with equaliser to prevent liquid-oxygen tank pressure from exceeding gasoline tank pressure, pendulum stabiliser, and 10-ft parachute; flame small and white; duration 12 sec; altitude about 1000 ft; then tilted to a horizontal powered flight at speed of over 700 mph; landed 11,000 ft from tower. Pendulum stabiliser as was expected gave an indication of operating the vanes for the first few hundred feet, but not thereafter.
Rocket had improved gyro stabilisation; length 14 ft 9 3/4 in.; empty weight 78 1/2 lb; altitude 4800 ft; average speed 550 mph; corrected its flight perfectly several times, for several hundred feet; horizontal distance, 13,000 ft; total time of flight, 20 sec.
Rocket had new lift indicator; length 15 ft 1 1/2 in.; weight 84 lb; altitude 7500 ft; excellent stabilisation; landed 5500 ft from tower, digging hole 10 in. deep; loud whistle on descent.
Rocket had new timing device for parachute, and cushioned gyro. Day was windy; duration 10 sec; height 120 ft; tipped into wind as it left the tower.
Rocket had strainers and thicker air vanes; duration of propulsion, 14 sec; altitude 6600 ft with excellent correction up to 3000 ft; parachute torn off.
Rocket had new gasoline orifices; duration of lift 12 sec; altitude about 4000 ft; speed high -- shot a wave of dirt, resembling a water wave, before it on landing. This completed Goddard's test of the A series of rockets. They had included 10 proving-stand tests and 14 flight test attempts, of which 7 resulted in flights. Average interval between tests was 28 days