The Shahed 171 Simorgh (sometimes S-171 and called IRN-170 by the US government^[1]) is an Iranian jet-powered flying wing unmanned combat aerial vehicle (UCAV) produced by Shahed Aviation Industries.^[3]

Its design is based on a reverse engineered American RQ-170 UAV captured by Iran in 2011 and modified to carry guided missiles.^[3] It is one of two Iranian flying wing UAVs based on the RQ-170, along with the Saegheh, a smaller version, with which it is often confused.

Simorgh is a Persian word deriving from Middle Persian 𐭮𐭩𐭭𐭬𐭥𐭫𐭥 sēnmurw,^[4][5] which was a benevolent bird in Persian mythology.

The Simorgh is a reverse engineered RQ-170. There are multiple unknown variants, one of which is modified to play the role of a UCAV armed with 4 missiles. An author stated it was a crude mock-up mostly made out of fiberglass.^[6][7] It was used with munitions during the 2020 Joint Exercise Zolfaghar 99.^[8]

According to the United States Government, a company associated with Imam Hossein University, Paravar Pars Company, was involved in the reverse engineering and research, development, and production of the Shahed 171.^[9]

Two were under construction as of 2014.^[10] In 2014 Iran said that they would have four in service by March 2015.^[11]

The UAV was first seen in May 2015 and was shown flying on Iranian TV in October 2016.^[12] Jane's analysis placed the UAV at Kashan Air Base.^[12][13]

Some sources report that a Shahed 171 may have been shot down in the February 2018 Israel–Syria incident, but the UAV was probably the very similar Saegheh.^[3]

 Iran

• Islamic Revolutionary Guard Corps - Aerospace Force