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The aircraft was purchased by USAAC in September 1931 and redesignated YP-24, serial number 32-320. Early testing was sufficiently impressive to generate an order for five Y1P-24 fighters and four Y1A-9 attack aircraft intended to replace the Berliner-Joyce P-16. The A-9 differed in having four forward-firing machine guns, underwing racks for ...
The two YF-23s flew 50 times for a total of 65.2 hours. [69] The tests demonstrated Northrop's predicted performance values for the YF-23. [57] Both designs met or exceeded all performance requirements; the YF-23 was stealthier and faster, but the YF-22 was more agile. [70] [64] A YF-22 in the foreground with a YF-23 in the background
Designations YF-110 and YF-112 through YF-116 were acquired (captured or purchased) foreign aircraft used for evaluation and aggressor training. Designations YF-117 and YF-118 were black projects , with the F-117 designation later becoming the official Tri-Service designation of the production variant of the former.
In many respects, the YF-22s were different from EMD/production F-22s as the design progressed from relatively immature Configuration 632/1132 to the final Configuration 645. Contrary to the F-117 Nighthawk, which was initially difficult to control because of small vertical stabilizers, the YF-22 had its fin area over-specified by Lockheed ...
The YF-23 is a liquid rocket vernier engine, burning N 2 O 4 and UDMH. [5] It is used in along the YF-22 to form the YF-24 and YF-25 propulsion modules. [ 3 ] [ 6 ] [ 7 ] [ 8 ]
Anxious airline flyers may well remember 2024 as the year their worst fears about the safety of air travel felt confirmed, as a series of unprecedented, and in some cases fatal, airplane incidents ...
The Tesla Cybertruck explosion and fire at the entrance of the Trump Hotel in Las Vegas Wednesday morning is being investigated as a possible terrorist act, according to a law enforcement official ...
This is a table of 1962 United States Tri-Service aircraft designation system with selected letter sequences and number. Two previous USAF/AAF/AAC number series are included due to their impact and partial incorporation into the tri-service system (A, B, C, F and O reset to one, but # carryover existed).