Lockheed Martin F-35 Lightning II

Lockheed Martin F-35 Lightning II
Name	F-35 Lightning II
Caption	An F-35A of the United States Air Force in flight
Type	Stealth multirole fighter
Manufacturer	Lockheed Martin
First flight	2006-12-15
Introduction	2015
Status	In service
Primary user	United States Air Force
Produced	2006–present
Number built	900+ (approx.)

Lockheed Martin F-35 Lightning II is a family of single-seat, single-engine, all-weather stealth multirole fighters developed and produced by Lockheed Martin. Conceived through the Joint Strike Fighter program, the F-35 was designed to replace a range of legacy types including the McDonnell Douglas F-15 Eagle, General Dynamics F-16 Fighting Falcon, Panavia Tornado, and Grumman F-14 Tomcat in allied inventories. The program involves multinational partners such as United Kingdom, Italy, Netherlands, and Australia, and it serves as a focal point in modern United States Department of Defense aviation modernization.

Development

The F-35 emerged from the Joint Strike Fighter program initiated by the United States Department of Defense to procure a low-observable multirole aircraft for the United States Air Force, United States Navy, and United States Marine Corps. Competing designs from Lockheed Martin, Boeing, and Northrop Grumman culminated in a selection process that favored Lockheed Martin's X-35 demonstrator over Boeing's X-32; development proceeded under the auspices of the Defense Acquisition Board and the Program Executive Officer for Joint Strike Fighter. International collaboration included Production Sharing Agreements with partners such as Turkey (later suspended), Canada (initially deferred), and Norway, integrated through Foreign Military Sales managed by the Defense Security Cooperation Agency. Flight testing spanned facilities at Edwards Air Force Base, NAS Patuxent River, and Eglin Air Force Base, with the first flight of the prototype in 2006 and initial operational capability declared by services in the mid-2010s.

Design and features

The F-35's design centers on low observable technologies derived from previous programs like the Lockheed F-22 Raptor and lessons from the Have Blue demonstrator. The aircraft integrates an internal weapons bay to reduce radar cross-section while retaining precision-guided munitions capacity compatible with stores such as the GBU-31 JDAM and AIM-120 AMRAAM. Its sensor suite combines the AN/APG-81 active electronically scanned array radar, the AN/AAQ-37 Distributed Aperture System, and the Electro-Optical Targeting System influenced by developments in the Advanced Targeting Pod lineage. The F-35 employs a Pratt & Whitney F135 turbofan derived from heritage engines like the Pratt & Whitney F119, with a shaft-driven lift fan in the short takeoff and vertical landing variant reflecting technology demonstrators such as the Yak-38 and concepts from the Harrier II program. The pilot interface features the AN/ASQ-239 electronic warfare system, a panoramic helmet-mounted display system developed in partnership with Rockwell Collins and Kongsberg, and mission systems rooted in networked architectures similar to the Link 16 family.

Variants

Three primary variants address differing service requirements: - F-35A conventional takeoff and landing used by the United States Air Force and export customers, designed to replace types including the General Dynamics F-16 Fighting Falcon and Fairchild Republic A-10 Thunderbolt II roles. - F-35B short takeoff/vertical landing adopted by the United States Marine Corps, Royal Navy, and Italian Navy, incorporating a lift fan system developed with Rolls-Royce and elements similar in intent to the Hawker Siddeley P.1127 lineage. - F-35C carrier variant operated by the United States Navy, featuring larger wings, reinforced landing gear, and an arrestor hook akin to design solutions used on the Grumman F-14 Tomcat and McDonnell Douglas F/A-18 Hornet. Each variant shares common avionics and mission systems while differing structurally and in propulsion integration to meet fleet-specific requirements set by procurement offices such as the Office of the Secretary of Defense.

Operational history

The F-35 reached initial operational capability with the United States Marine Corps (F-35B) and subsequently with the United States Air Force (F-35A) and United States Navy (F-35C). It has been deployed to theaters where it has flown missions alongside platforms like the Lockheed C-130 and Boeing KC-135 for sustainment, and interoperated with allied forces from Japan, Israel, and South Korea during joint exercises. Operational evaluations have emphasized stealth-enabled suppression of integrated air defenses, multirole strike, and advanced intelligence, surveillance, and reconnaissance roles complementing systems such as the E-3 Sentry and MQ-9 Reaper. Training and basing have involved facilities including Luke Air Force Base and RAF Marham.

Operators and procurement

Primary operators include the United States Air Force, United States Marine Corps, and United States Navy. International operators and partners encompass United Kingdom, Italy, Australia, Netherlands, Norway, Denmark, Japan, South Korea, Israel, Belgium, Poland, and Singapore among others via Foreign Military Sales and industrial participation agreements. Procurement decisions have been influenced by strategic planning from entities such as the NATO defense planning bodies and national ministries like the Ministry of Defence (United Kingdom). Production lines at facilities in Fort Worth, Texas and subcontractor sites in countries like Turkey (prior to suspension), Japan, and Italy support global supply chains managed under program offices such as the F-35 Joint Program Office.

Accidents and incidents

The F-35 fleet has experienced flight test mishaps, maintenance-related incidents, and a small number of Class A mishaps investigated by organizations like the National Transportation Safety Board and service accident investigation boards. High-profile events include grounding actions following engine anomalies and ejection seat investigations influenced by earlier programs such as the F-16 and F-22 investigations. Losses and incidents have prompted safety directives from the Office of the Under Secretary of Defense for Acquisition and Sustainment and corrective engineering changes issued by manufacturers including Lockheed Martin and Pratt & Whitney.

Future upgrades and successors

Planned modernization efforts include the Block upgrade roadmap, follow-on hardware and software increments developed under the stewardship of the F-35 Joint Program Office and contractors such as Northrop Grumman and BAE Systems. Future capabilities emphasize enhanced sensor fusion, expanded electronic warfare suites, integration with directed-energy concepts explored at DARPA and the Office of Naval Research, and potential cooperative engagement with platforms like the Boeing F/A-XX conceptual successor. Long-term force planning by the United States Air Force and allied defense ministries considers lifecycle sustainment, attrition replacement, and complementary systems such as sixth-generation fighter initiatives pursued by United Kingdom, Japan, and France.

Category:Lockheed Martin aircraft Category:Stealth aircraft Category:United States military aircraft