Model 090P Four-View
October 1985: The Lockheed proposal design configuration is frozen. The associated design, called Model 090P, had a streamlined nose, trapezoidal wing planform with positive sweep on both the leading and trailing edges, and four tail surfaces (two horizontal and two vertical). The large vertical tails were canted outwards. The leading and trailing edge sweep angles of all of the surfaces were aligned at common angles. The design had a wide strake that ran in a straight line from the wing leading edge outboard of the inlets to the point of the nose. (Click on image above to get complete view.)
General Dynamics And Boeing Designs
3 November 1986: Lockheed, Boeing, and General Dynamics representatives meet for the first time as partners at Lockheed Skunk Works facilities in Burbank, California. Each company briefs its design approach. The design by General Dynamics is shown at the top.
ATF Configuration 1095
July 1987: The original design of the YF-22, Configuration 1095, is determined to be technically and competitively unacceptable by the contractor team.
Boeing AFL Design
17 July 1987: Initial tests of the YF-22 avionics are carried out on the team’s Airborne Flying Laboratory, a Boeing 757.
Configuration 614
October 1987: A new configuration for the YF-22 with a diamond wing and four tails (Configuration 614) is selected.
Configuration 631
November 1987: The tail arrangement of Configuration 615 was rearranged to produced Configuration 631 of the Lockheed-General Dynamics-Boeing design for the Advanced Tactical Fighter.
YF-22 Wings Come Together At Boeing
1989: Construction of major sections for two prototypes takes place at Boeing in Seattle, Washington; General Dynamics in Fort Worth, Texas; and Lockheed in Palmdale, California.
YF-22 Mid Fuselages Come Together At General Dynamics
1989: Construction of major sections for two prototypes takes place at Boeing in Seattle, Washington; General Dynamics in Fort Worth, Texas; and Lockheed in Palmdale, California.
YF-22 Forward Fuselage Comes Together At Lockheed
1989: Construction of major sections for two prototypes takes place at Boeing in Seattle, Washington; General Dynamics in Fort Worth, Texas; and Lockheed in Burbank, California. The forward fuselage was shipped to Palmdale from Burbank for final assembly.
YF-22 Final Assembly
13 January 1990: Final assembly of the first YF-22 prototype begins in Palmdale.
Photo by Denny Lombard
YF-22 Debut In Palmdale
29 August 1990: YF-22A is unveiled in ceremonies at Lockheed Plant 10 in Palmdale. This first Prototype Air Vehicle, called PAV-1, is powered by two General Electric YF120-GE-100 turbofan engines.
YF-22 First Flight
29 September 1990: Lockheed test pilot Dave Ferguson makes the first flight of the YF-22 when he ferries the aircraft from Palmdale to the Air Force Flight Test Center at Edwards AFB, California.
