AKA: Safir-2. Status: Active. First Launch: 2019-01-15. Last Launch: 2019-01-15. Number: 1 . Payload: 350 kg (770 lb). Thrust: 1,333.00 kN (299,670 lbf). Gross mass: 85,000 kg (187,000 lb). Unfuelled mass: 14,000 kg (30,000 lb). Height: 27.00 m (88.00 ft). Diameter: 2.40 m (7.80 ft). Span: 2.40 m (7.80 ft).
Despite sharing a common diameter, Simorgh's first stage was significantly different to that of the North Korean Unha-2/3. The first stage was about 1.5 m longer and the tank volume ratio O/F was about 1.4 (Unha-2/3 was 1.6). Primary propulsion was a cluster of four Nodong engines, arranged like the unrealized Unha-1. First stage steering was by four vernier motors, each with their own turbopump, again different from those on the Unha-2/3. The second stage was a longer, larger diameter version of the Safir-1 upper stage, using four four engines of the LRE-4 (4D10V) fed by two turbopumps. A third stage was needed to kick the payload to orbital velocity, perhaps using the Saman-1 solid rocket motor.
See Payam-e Amirkabir (AUTSAT 1, Amir-Kabir 1). The third stage failed to operate correctly and the 100-kg-class satellite payload, "Payam", failed to reach orbit. Planned orbit was 500 x 500 km x 55 deg. If the third stage did not fire at all, the payload probably fell in the Indian Ocean, possibly about 1000 km west of the Cocos Islands.