RQ-170 Sentinel

RQ-170 Sentinel
FOX 52 · CC BY-SA 4.0 · source
Name	RQ-170 Sentinel
Caption	An RQ-170 Sentinel at Kandahar International Airport in 2009.
Type	Unmanned aerial vehicle (UAV)
National origin	United States
Manufacturer	Lockheed Martin
First flight	2007
Introduction	2007
Status	In service
Primary user	United States Air Force
Number built	Classified
Developed from	Lockheed Martin classified programs

RQ-170 Sentinel. The RQ-170 Sentinel is a stealth unmanned aerial vehicle operated by the United States Air Force under the purview of the Air Combat Command. Developed by Lockheed Martin's famed Skunk Works division, it is designed for high-altitude reconnaissance missions in denied airspace. Its existence was publicly acknowledged by the U.S. Department of Defense in 2009 after years of speculation, and it has since been involved in several high-profile intelligence operations.

Development and Design

The aircraft's development was a highly classified effort led by Lockheed Martin at its Palmdale facility, leveraging advanced technologies from prior programs like the F-117 Nighthawk and F-22 Raptor. Its distinctive flying-wing design, reminiscent of the B-2 Spirit bomber, prioritizes a low radar cross-section to evade sophisticated air defense systems such as those fielded by the Russian Armed Forces and the Islamic Republic of Iran Air Force. The propulsion system, believed to be a single turbofan engine, is housed within the airframe to reduce infrared and acoustic signatures. Key sensor systems, likely including signals intelligence and electro-optical payloads, are carried in a semi-recessed belly fairing to maintain its stealth profile.

Operational History

The RQ-170 entered operational service with the 432d Wing at Creech Air Force Base in Nevada, and its deployments have been closely tied to Central Command theaters. It provided critical surveillance during the War in Afghanistan from bases like Kandahar International Airport. The platform gained significant notoriety for its role in monitoring the compound of Osama bin Laden in Abbottabad prior to the Operation Neptune Spear raid conducted by United States Naval Special Warfare Development Group. Subsequent reporting indicates its use in missions over North Korea, Syria, and during tensions with the Islamic Revolutionary Guard Corps.

Technical Specifications

While official specifications are classified, observable characteristics and analysis suggest a wingspan of approximately 26 meters. The airframe is constructed from advanced composite materials, and its landing gear consists of a retractable tricycle configuration. It is believed to operate at altitudes exceeding 50,000 feet, with an endurance likely measured in multiple hours. The drone is controlled via satellite data links, potentially utilizing the Milstar or Advanced Extremely High Frequency satellite constellations, from ground control stations operated by personnel such as those from the 732d Operations Group.

Notable Incidents and Losses

The most significant known loss occurred in December 2011 when an RQ-170 crashed near Kashmar in northeastern Iran. The government of Mahmoud Ahmadinejad claimed its forces used electronic warfare to capture the aircraft intact, a claim disputed by officials from the Central Intelligence Agency and the Pentagon. The incident sparked intense analysis within the Defense Intelligence Agency and led to concerns about compromised technology at facilities like Area 51. In 2019, the Islamic Revolutionary Guard Corps claimed to have shot down another Sentinel near the Strait of Hormuz, though the United States Central Command denied any aircraft loss.

In Popular Culture

The enigmatic drone has been featured in several works of fiction, notably appearing in the Marvel Cinematic Universe film Captain America: The Winter Soldier. It is a central plot device in the video game Call of Duty: Modern Warfare 3, where it is used for surveillance over Europe. The 2012 film Zero Dark Thirty includes depictions of its role in the hunt for Osama bin Laden. Its distinctive silhouette has also been referenced in television series such as Homeland and in novels by authors like Tom Clancy.

Category:United States military reconnaissance aircraft Category:Stealth aircraft Category:Unmanned aerial vehicles of the United States