Iris
A small, two-stage, solid-propellant sounding rocket for exploring the upper atmosphere. The development of the Iris sounding rocket had begun at NRL prior to the transfer of its Rocket-Sonde group to NASA. Iris was built by the Atlantic Research Corp. for the Naval Bureau of Ordnance, with NRL monitoring the design, the production, and the payload.58 The development of the rocket was completed by NASA, with the first NASA firing taking place at Wallops Island on Jul. 22, 1960. Iris was capable of lifting 45 kg (100 lb) to about 320 km (200 miles). NASA has not used the Iris rocket since 1962.
Related category
• ROCKETS, MISSILES, AND LAUNCH VEHICLES
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