Northrop Grumman MQ-8 Fire Scout
Unmanned autonomous helicopter for reconnaissance, fire support, and targeting.
The Northrop Grumman MQ-8 Fire Scout is an unmanned helicopter that operates autonomously, built for the United States Armed Forces. It handles reconnaissance, situational awareness, aerial fire support, and precision targeting for ground, air, and naval units. The first version, the RQ-8A, came from the Schweizer 330, while the upgraded MQ-8B was based on the Schweizer 333. A larger variant, the MQ-8C, uses the Bell 407 as its foundation. As of February 2018, the U.S. Navy had 23 MQ-8Bs in service, but the MQ-8B was retired in October 2022.
The Navy started looking for a second-generation UAV after retiring its RQ-2 Pioneers. The requirements called for a vertical takeoff and landing aircraft with a 200-pound payload, a 125-mile range, three hours of endurance at 20,000 feet, and the ability to land on a ship in 29 mph winds. The UAV also needed to fly 190 hours before scheduled maintenance. Three finalists competed in the VTOL-UAV program: Bell, Sikorsky, and a team of Teledyne Ryan and Schweizer Aircraft. The Ryan-Schweizer design won in spring 2000. Named the RQ-8A Fire Scout, it was derived from the Schweizer 330SP, a three-passenger turbine helicopter, but with a new fuselage, fuel system, and UAV electronics and sensors.
The first prototype was initially flown with a pilot and made its first autonomous flight in January 2000. It used a Rolls-Royce 250-C20 turbine engine running on JP-8 or JP-5 jet fuel, the latter having a higher flashpoint for safer shipboard use. The Fire Scout was planned to carry a sensor ball turret with electro-optic and infrared cameras plus a laser range finder. Control came via a data link based on the Northrop Grumman RQ-4 Global Hawk, with line-of-sight range up to 172 miles. The control system could be installed on a ship or in a Humvee for Marine Corps use.
In December 2001, the Navy decided the Fire Scout didn’t meet its needs and cut production funding, but development continued. Northrop Grumman offered improved versions to other customers. The U.S. Army became interested and awarded a contract for seven improved RQ-8B evaluation machines in late 2003. In 2006, the designation changed to MQ-8B. This version has a four-blade main rotor instead of the RQ-8A’s three-blade rotor, reducing noise and improving lift and performance. The four-blade design had already been tested on prototypes.
Quick Facts
- Manufacturer
- Northrop Grumman
- First Flight
- 2000
- Introduction
- 2009 (MQ-8B)
- Retired
- 2022
- Primary User
- United States Navy
- Number Built
- 30 (MQ-8B)
- Developed From
- Schweizer 330 and 333
- Variants
- Sikorsky S-434
- Developed Into
- Northrop Grumman MQ-8C Fire Scout
Facts from the source article.
Lore & Background
The Fire Scout originated from a US Navy requirement for a vertical takeoff and landing UAV to replace the RQ-2 Pioneer. The Navy specified a payload capacity of 90 kg, a range of 125 miles, an endurance of three hours at 20,000 ft, and the ability to land on a ship in a 29 mph wind. The Ryan-Schweizer design won the competition in spring 2000. The RQ-8A prototype first flew autonomously in January 2000, powered by a Rolls-Royce 250-C20 turbine engine running on JP-8 or JP-5 jet fuel. Although the Navy cut production funding in December 2001, development continued, and the US Army awarded a contract for seven improved RQ-8B evaluation machines in late 2003, later redesignated MQ-8B in 2006.
The MQ-8B features a four-blade main rotor for reduced noise and improved lift, stub wings for armament carriage, and a payload capacity of up to 700 lb for short-range missions. It can carry Hellfire missiles, Viper Strike glide weapons, and APKWS laser-guided rockets. The Navy ordered eight Sea Scout MQ-8B derivatives for evaluation, and in 2009 approved low-rate initial production. The MQ-8B complements manned aviation detachments on Air Capable ships and is deployed with MH-60R or MH-60S detachments. It received the RDR-1700 maritime surveillance radar in 2012 and the AN/ZPY-4(V)1 radar in 2013, and was to receive the COBRA mine-detection sensor in 2017.
Reader's Guide
The MQ-8 Fire Scout represents a significant step in ship-based unmanned aviation, being the first unmanned helicopter to autonomously land aboard a moving US Navy ship, achieved in January 2006 aboard USS Nashville. Its development saw shifting service interest: the Navy initially canceled production in 2001, but Army involvement revived the program, only for the Army to terminate its participation in 2010, citing the RQ-7 Shadow as sufficient. The Navy continued, deploying MQ-8Bs on littoral combat ships from 2014 onward, where the Fire Scout contributed to anti-submarine warfare, surface warfare, and mine warfare roles. Its modular payload system allowed rapid reconfiguration for sensors, radar, or weapons, including the APKWS rocket system fielded by February 2016. The MQ-8B was retired from US Navy service in October 2022, with 23 units in service as of February 2018. The Fire Scout's legacy includes demonstrating the viability of autonomous VTOL UAVs for naval operations and influencing later unmanned rotorcraft designs.
Did You Know?
- The MQ-8B was derived from the Schweizer 333 helicopter.
- The MQ-8B can carry up to 700 lb of payload for short-range missions.
- The Fire Scout was the first unmanned helicopter to autonomously land on a moving US Navy ship.
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