Pyros (bomb)

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Small Tactical Munition
Place of origin USA
Production history
Manufacturer Raytheon
Specifications
Weight 13 pounds (5.9 kg)
Length 55 centimetres (22 in)

Guidance
system
Dual-mode seeker: semi-active laser guidance plus GPS-INS
Launch
platform
UAV

The Pyros, previously referred to as the Small Tactical Munition (STM), is a weapon developed by Raytheon, designed to be used by UAVs.[1][2][3]

Raytheon successfully conducted flight tests in October 2010, and it may be used to arm the AAI RQ-7 Shadow.[4]

It weighs 13 pounds (5.9 kg), and originally had a 7 lb (3.2 kg) warhead.[5] On April 18, 2011, Raytheon successfully tested a new 5 lb (2.3 kg) warhead. Though lighter, the new warhead had a significantly improved blast-fragment capability.[6]

In July 2012, Raytheon claimed the STM could be "months" away from fielding.[7] In early August 2012, Raytheon renamed the munition Pyros and completed the first end-to-end test of the bomb.[8] The test validated the weapon's guidance modes, height-of-burst sensor, electronic safe and arm device, and multi-effects warhead.[9]

On 18 July 2014, Raytheon conducted the first live-fire test of the Pyros. The munition targeted a simulated group of insurgents planting a roadside bomb and used its height-of-burst sensor to detonate several feet above the ground.[10] Dropped from an altitude of 10,000 feet (3,000 m), the Pyros takes 35-40 seconds to reach the ground.[11]

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