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viewing / pointingPointing of a sensor to view a distant target.
VikingRocket engine used in the first and second stages of the Ariane series of launchers from Ariane 1 to Ariane 4, and in the liquid strap-on boosters on Ariane 4.
Ariane 1 to 4
VulcainCryogenic rocket engine designed to propel the main stage of the Ariane 5 launch vehicle.