Question about possible in-house designations for late 1970s and early 1980s Lockheed hypersonic spyplane studies

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Message posted by Vahe Demirjian (Member since 04/28/2022) on March 22, 2024 at 20:43:37 PST:

The book "Lockheed Aircraft Since 1913" by the late René Francillon mentions that the Lockheed-California's Temporary Design Designation number sequence (starting with the CL- abbreviation) reached CL-2105 by mid-1981.

Since CL-1990 was used by Lockheed for a late 1970s STOL derivative of the S-3 Viking, in which case the CL-2016 fighter project and CL-2102 stealth bomber project were conceived in 1980, is there information in Lockheed technical documents as to which CL-series designations were allocated by Lockheed to the Mach 4 and Mach 7 reconnaissance aircraft designs mentioned on page 141 of the January 29, 1979 issue of Aviation Week and Space Technology?

Also, I'm curious if Lockheed ever allocated a CL-series designation to the Mach 5 Penetrator design studies initiated in 1980 because Lockheed was busy with advanced combat and non-combat aircraft designs in 1980, including the Senior Peg, supercruise fighters, reconnaissance aircraft, et cetera.


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