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The X-4 was developed for the study of flight characteristics of swept wing semi-tailless aircraft at transonic speeds (about Mach . Northrop built two X-4s. One aircraft was first flown by Northrop on December 16, 1948, and the second X-4 made its initial flight on June 7, 1949.
The first F-89 made its initial flight in August 1948 and deliveries to the Air Force began in July 1950. Northrop produced 1,050 F-89s.
The T-38A was the U.S. Air Force's first supersonic trainer.
Northrop F-5 Freedom Fighter.
Northrop F-89 Scorpion with Northrop SM-62 Snark
The M2-F2 lifting body, built by Northrop, aircraft crashes when landing on May 10, 1967.
The M2-F3 lifting body, built by Northrop, being launched from NASA's B-52 mothership.
The HL-10 lifting body is seen here in powered flight shortly after launch from the B-52 mothership.
The Northrop YF-17 was tested against the General Dynamics YF-16 in the Light-Weight Fighter fly-off competition. The F-16 won and entered production starting in 1975.
McDonnell Douglas/Northrop F/A-18 Hornet.
Jack Northrop with the B-2 team.
First official artist's rendering of the stealth bomber.
Northrop Grumman B-2A "Spirit" Bomber
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Northrop and Northrop GrummanNorthrop Aircraft, Inc., founded in 1939 by Jack Northrop, a skilled and innovative designer, focused during its first few years on designing flying wing aircraft and producing planes that were used during World War II. It received its first post-war work in 1946 for what would become the SM-62 Snark, the first operational intercontinental guided missile. The missile had a range of more than 5,000 miles and carried a 7,000-pound warhead. The first operational Snark arrived in January 1959, and 51 were delivered over the next two years. Northrop also built the SX-4 research airplane (later the X-4) for the U.S. military and the National Advisory Committee for Aeronautics (NACA). The plane flew from December 15, 1948 until 1953, testing tailless and semi-tailless configurations at transonic speeds. Project results demonstrated that tailless aircraft were unsuited for transonic flight. The first major Northrop aircraft of the 1950s was the F-89 Scorpion, a heavily armed, all-weather fighter-interceptor and one of the world's first jet fighters. The F-89 program began in March 1945, and the first plane flew in August 1948. Deliveries to the Air Force began in July 1950. Its "J" model of 1957 was the first aircraft to fire an air-to-air nuclear missile. Three hundred fifty "J" models became the Air Defense Command's first fighter-interceptors to carry nuclear weapons. Northrop produced a total of 1,052 F-89s in all versions, securing Northrop a position as a major combat aircraft supplier for the Cold War era, even though for a time, they were Northrop's only production aircraft. The F-89 was Jack Northrop's last aircraft, and he left the company at the end of 1952. In the mid-1950s, the U.S. Air Force required a trainer to better prepare student pilots for the latest aircraft that then were coming into service. It chose Northrop's T-38A Talon, which became the Air Force's first supersonic trainer. The prototype first flew on April 10, 1959, and the Air Force ordered more than 1,100 between 1961 and 1972, when production ended. Upgrades will allow it to be used until 2020. A similar plane, the F-5 Freedom Fighter, evolved from the T-38. This lightweight fighter entered service in 1964. Northrop developed several versions of the plane, which have been used by militaries in 31 countries as well as by the United States. More than 1,000 were built. In 1959 Northrop Aircraft changed its name to Northrop Corporation, reflecting its broader focus. During the 1960s, Northrop built the M2-F2, M2-F3, and HL-10 lifting bodies for the National Aeronautics and Space Administration (NASA). The idea behind these wingless aircraft was that they could be returned from space and guided to a specific landing spot. Used purely for research, they demonstrated the limitations of wingless aircraft and were important for the development of the future Space Shuttle orbiter. As a result of this research, NASA chose to develop an orbiter with wings. In the 1970s, Northrop was implicated in bribery scandals much like those that had rocked the aircraft giant Lockheed. Investigations indicated that Northrop had aggressively offered payments in the amount of $30 million to foreign countries in exchange for aircraft orders and had not merely responded to solicitations or extortion. The company was also convicted in May 1974 of making illegal contributions totaling $476,000 to the Nixon presidential campaign. Although the company's chief executive, Thomas V. Jones, was forced out after these and other improprieties, he returned to the company several times before he finally retired in September 1990. Northrop continued improving the design of the F-5 and rolled out the F-5E Tiger II in 1972. The first delivery to the Air Force took place in April 1973, and 112 Tiger IIs were purchased. The top training schools in the Navy and Air Force used the Tiger II as "enemy" aircraft in combat training. Export orders were also strong. While working on the F-5, Northrop began designing a higher-performance successor. By 1970, this design had evolved into the P-530 Cobra, recognizable by its two vertical tails that slanted outward. Northrop submitted an adaptation of this plane to the Air Force for its Lightweight Fighter competition. From the four competitors, the Air Force selected the aircraft company General Dynamics and Northrop each to build two prototypes under the designations YF-16A (General Dynamics) and YF-17A (Northrop). The General Dynamics design was selected for production as the F-16, with an initial order of 650 planes and another 348 for export. Meanwhile, the Navy had been directed by Congress to adapt an existing design to replace the McDonnell F-4 Phantom II fighter and the Vought A-7 Corsair II attack plane. The successor Naval Air Combat Fighter (NACF) led to adaptations of both General Dynamics' YF-16 and Northrop's YF-17. McDonnell Douglas teamed with Northrop and became the prime contractor on the NACF. Northrop agreed to the arrangement because the larger McDonnell Douglas had more experience with carrier-based aircraft. In 1976 McDonnell Douglas-Northrop won over the General Dynamics team. The new plane was produced as the F-18 fighter and the A-18 attack plane. The two were soon combined and went into production as the F/A-18 Hornet. So although Northrop had originally developed the design for the F/A-18 when it was still the YF-17, it became the major subcontractor on the project, producing the center and aft fuselage, twin vertical tails, and associated subsystems. In 1979 Northrop developed an advanced version of the F-5 and named it the F-20 Tigershark. This plane could be airborne within 60 seconds after an alert, the fastest scramble time of any fighter in the world. However, two of the first three planes crashed, and the program was terminated in 1986. Northrop lost $1.2 billion on the project. Jack Northrop's dream of a flying wing resurfaced in the late 1970s when Northrop began work on a proposal for a new plane with stealth technology. In 1980, when company designers had drawn the new plane, the Air Force brought the ailing Jack Northrop, confined to a wheelchair, to see the drawings of the secret "stealth" bomber, which strongly resembled his B-35 flying wing of the early 1940s, perhaps vindicating his vision. In October 1981, Northrop received the contract for the Advanced Technology Bomber, a long-range heavy bomber with low-observable technology, beating out a design submitted by Lockheed. For the next seven years, the project remained shrouded in secrecy while work continued amid cost overruns and delays. Not until April 20, 1988 did the U.S. Air Force release a painting of the B-2 bomber. A few months later, on November 22, 1988, the first B-2 was rolled out at Palmdale, California. Its first flight occurred in 1989. In 1994, Northrop Corporation acquired the aerospace firm Grumman Corporation, forming Northrop Grumman Corporation. The new company set out to transform itself from primarily a producer of military aircraft, of prime importance in the Cold War era, to a defense electronics and systems integration company better suited for the environment of the 1990s and 21st century, while still retaining its capabilities in military aircraft systems. A series of acquisitions followed the merger. In 1994, Northrop Grumman added the remaining 51 percent of Vought Aircraft Company, an aerostructure producer, to the 49 percent that Northrop had acquired in 1992, increasing its capabilities as a builder of aircraft structures. It held Vought until 2000 when it was sold back to Carlysle Group, the previous owners of Vought. In 1996, Northrop Grumman acquired the defense electronics and systems business of Westinghouse Electric Corporation. In August 1997, Northrop Grumman and Logicon Inc., an information technology company, merged. In 1999, the company acquired Ryan Aeronautical, focusing on uncrewed aerial vehicles. In April 2001, Northrop Grumman acquired Litton Industries, a major information technology supplier to the federal government. The acquisition also added shipbuilding to Northrop Grumman's array of capabilities. In October 2001, it purchased Aerojet, a major aerospace/defense contractor specializing in missile and space propulsion, and defense and armaments. In November 2001, it acquired Newport News Shipbuilding Inc., creating the world's largest naval shipbuilder. At the end of 2001, Northrop Grumman has become the Nation's third largest defense contractoran $18-billion global aerospace, shipbuilding, and defense company with almost 100,000 employees. Judy Rumerman References: Biddle, Wayne. Barons of the Sky. New York: Simon & Schuster, 1991. Donald, David. The Complete Encyclopedia of World Aircraft. New York: Barnes & Noble Books, 1999. Pattillo, Donald M. Pushing the Envelope: The American Aircraft Industry. Ann Arbor, Mich.: The University of Michigan Press, 1998. "Northrop Short History." http://www.abs.net/~maddock/LO/B2/shorthistory.htm. "Northrop Grumman History." Northrop Grumman Corporation. http://www.northrop-grumman.com/docs/company_history_sum.html. "Northrop Grumman History." Northrop Grumman Corporation (provided by Manager, Corporate Public Information) Northrop-Grumman News Release. "Northrop Grumman Completes Tender Offer for Newport News Shipbuilding; Acquisition Creates Nation's Third Largest Defense Contractor, World's Largest Naval Shipbuilder." November 30, 2001. http://www.irconnect.com/noc/pages/news_releases.mhtml?d=21842 "T-38 Talon." U.S. Air Force Fact Sheet. http://www.af.mil/news/factsheets/T_38_Talon.html.
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