AKA: Iris-0. Status: Retired 1968. Thrust: 84.00 kN (18,883 lbf). Gross mass: 100 kg (220 lb). Unfuelled mass: 59 kg (130 lb). Burn time: 0.80 s. Height: 0.80 m (2.62 ft). Diameter: 0.30 m (0.98 ft).
ARC solid rocket engine. Cluster of Sparrow motors. Iris zero stage.