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Lockheed XF-90 Penetration Fighter By William Simone. 68-pages, including 21-pages of color. 212 B&W photos, 68 color photos, and 90 illustrations.
Created by the famous Lockheed "Skunks Works" and highly publicized at the start of the 1950s, the futuristic XF-90 seemed to epitomize what a supersonic fighter ought to look like. I was one of the first Air Force jets to be equipped with afterburners and the first Lockheed aircraft to exceed the speed of sound. Its handsome good looks captured the public's imagination. Even the creators of the popular Blackhawk comic book series adopted the XF-90 as its hero's jet fighter of choice.
The text covers the design criteria of the 1945 penetration fighter request-for-proposal and the 8 companies that submitted proposals. Lockheed made over 60 design studies for the XF-90 which included delta wings, V-tails, forward swept wings, variable sweep wings, and Navy proposals, many of which are discussed in the book. The text goes on to describe its development and testing and flight testing at Muroc/Edwards AFB by Tony LeVeir, Lockeed's chief test pilot. Also included is an extensive history (14-pages) of the second XF-90's involvement in the nuclear testing at the Nevada Test Site and its subsequent retrieval. Additionally, 2-pages are devoted to Blackhawks and 9-pages to XF-90 models.
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North-American YF-93A Penetration Fighter Air Force Legends 227 By William Simone 52-pages, 4-color and 87-b&w photos, with 39 draqwings.
North-American's oft-forgotten YF-93A (NA-157) was an advanced version of the F-86A Sabre day fighter designed for the penetration fighter reqirement. It was originally designated the F-86C and was designed around NACA flush inlets and a 8,000 lb thrust J48 afterburning engine with three times the fuel of the F-86A, which gave it extremely long range. The two other penetration fighter candidates (the XF-88 and XF-90) had flown much earlier than the YF-93. All three types were not developed beyond the prototypes as the penetration fighter requirement was dropped by the Air Force. The aircraft sported F-86-style wings and tail mated to a new beffy fuselage with added electronics and 6-20mm cannon. The increased weight of the design led to a redesigned and strengthened dual-wheel main undercarrige. Only two-aircraft were built and the NACA flush intakes were replaced on ship one with conventional ram intakes resulting in increased overall performance. After retirement the two YF-93As were utilized at Moffett Field, CA, for further NACA testing before being scrapped.