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The proposed production F-23 configuration (DP231 for the F119 engine and DP232 for the F120 engine) for full-scale development, or Engineering & Manufacturing Development (EMD), represented the final refinement of the HSF concept and would have differed from the YF-23 prototypes in several ways.
YF-23 with YF119 engines taking off in afterburners, showing the exhaust trough in the aft deck. The YF119 on the YF-23 had a single-expansion ramp nozzle (SERN) consisting of a variable wedge flap on the top and a fixed ramp on the bottom, which then transitions to a trench on top of the aft fuselage.
The definition of the term fifth-generation fighter from Lockheed Martin has been criticized by companies whose products do not conform to these particular specifications, such as Boeing and Eurofighter, and by other commentators such as Bill Sweetman: [45] "it is misleading to portray the F-22 and F-35 as a linear evolution in fighter design.
The YF-22 team won the contest against the YF-23 team for full-scale development and the design was developed into the Lockheed Martin F-22. [ N 1 ] The YF-22 has a similar aerodynamic layout and configuration as the F-22, but with notable differences in the overall shaping such as the position and design of the cockpit, tail fins and wings ...
Print/export Download as PDF; Printable version; From Wikipedia, the free encyclopedia. Redirect page. Redirect to: Northrop YF-23; This page is a ...
As of December 2020, the only combat-ready stealth aircraft in service are the Northrop Grumman B-2 Spirit (1997), the Lockheed Martin F-22 Raptor (2005), the Lockheed Martin F-35 Lightning II (2015), [15] [16] the Chengdu J-20 (2017), [17] and the Sukhoi Su-57 (2020), [18] with a number of other countries developing their own designs. There ...
This page is an incomplete list of orbital rocket engine data and specifications. Current, upcoming, and in-development rocket engines ... 23.08: Archimedes New ...
However, the cited books in this article are written by people with direct connections to the YF-23, namely Alfred "Paul" Metz, YF-23 PAV-1 test pilot, and Air Force Materiel Command researchers and archiver, Tony Landis and reputed aviation author Dennis Jenkins. If that is the case, I can upload a non-free thumbnail version under fair use.