Editing Lockheed YF-22 (section)

===NATF-22===
[[File:NATF-22 305x170.jpg|thumb|A model of the Lockheed team's NATF design]]
The Lockheed team's design for the Navy Advanced Tactical Fighter (NATF), sometimes referred to as "NATF-22" or "F-22N" (the design was never formally designated), would have differed from the Air Force version in many ways. Because the NATF needed lower landing speeds than the F-22 for [[CATOBAR|aircraft carrier operations]] while still attaining Mach 2-class speeds, the design would have incorporated [[variable-sweep wing]]s; furthermore, the Navy placed greater emphasis on [[Loiter (aeronautics)|loiter]] time for [[fleet air defense]] rather than supercruise, so the variable-sweep wings also improved endurance.<ref name="Mullin2012P38-39"/><ref name="Miller2005p74"/> The fuselage shaping was similar to the Air Force version, while the landing gears and arresting hook were strengthened for aircraft carrier landings; all of these changes would have resulted in a heavier, more complex, and more expensive aircraft. It retained four empennage surfaces and thrust vectoring nozzles, and the avionics would initially have been largely common with the F-22, although additional sensors and mission avionics had also been planned for maritime missions. The design would have had a similar weapons bay arrangement but with expanded weapons carriage, including the [[AIM-152 AAAM]], [[AGM-88 HARM]], and [[Harpoon (missile)|AGM-84 Harpoon]].<ref>{{cite news |title=Naval YF-22 Would Have Swing Wings, But No Prototype Needed |work=Aerospace Daily |page=359 |publisher=McGraw-Hill, Inc |date=31 August 1990}}</ref><ref>Aronstein and Hirschberg 1998, p. 237.</ref>

[[File:Lockheed-Boeing_F-22_NATF-22_A-X_AF-X.jpg|thumb|left|From left to right, PSC F-22, NATF-22, and subsequent Lockheed/Boeing A-X and A/F-X designs; the latter two drew heavily from the NATF-22.]]
While the Lockheed team would submit the NATF-22 design with its F-22 full-scale development proposal in December 1990, the Navy began backing out of the NATF program in late 1990 to early 1991 and fully abandoned NATF by FY 1992 due to escalating cost and thus the design never progressed beyond Dem/Val to full-scale development, or engineering and manufacturing development (EMD). Lockheed and Boeing would leverage aspects of the design, such as the variable-sweep wings and the shaping of the fuselage, for several concepts for the Navy's Advanced-Attack (A-X) program, which later became the Advanced Attack/Fighter (A/F-X) program with added fighter capability, the successor to the canceled [[A-12 Avenger II]]; however, A/F-X would also be canceled as a result of the 1993 Bottom-Up Review due to post-Cold War budget pressure.<ref>Aronstein and Hirschberg, p. 239.</ref><ref>{{cite journal |title=A/F-X Unveiled |journal=[[Flight International]] |publisher=Reed Business Information |pages=12–13 |date=26 January – 1 February 1994}}</ref>