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I concur with Tommy. After looking thorough quite a number of Vought documents I have not seen the designation A3U used. The last A_U I have seen was a presentation for a family of A2U Cutlass designs starting with A2U-1 and ending with A2U-3. That presentation was Report No. 8690 "Presentation on "A2U" (F7U) Attack Airplane" dated August 27, 1952 and no doubt the one referenced in the Spangenberg notes provided previously in this topic.The Crusader designs leading up to the A-7 were called "Attack Crusader" and did not put a designation old or new system in the documents.For your viewing pleasure I am attaching a photo of the V-381 exploded view drawing from NARA II Spangenberg-Proposals files.bill
I concur with Tommy. After looking thorough quite a number of Vought documents I have not seen the designation A3U used. The last A_U I have seen was a presentation for a family of A2U Cutlass designs starting with A2U-1 and ending with A2U-3. That presentation was Report No. 8690 "Presentation on "A2U" (F7U) Attack Airplane" dated August 27, 1952 and no doubt the one referenced in the Spangenberg notes provided previously in this topic.
The Crusader designs leading up to the A-7 were called "Attack Crusader" and did not put a designation old or new system in the documents.
For your viewing pleasure I am attaching a photo of the V-381 exploded view drawing from NARA II Spangenberg-Proposals files.
bill
