Originally Posted by
dixi188
Another thought.
Why were the VC-10 variants 11xx numbers and not 10xx?
The Viscount was effectively the VC-6, -7 & -8, with 6xx, 7xx & 8xx variants, and the Vanguard the VC-9 with 9xx variants.
Not so. According to Andrews & Morgan's Putnam book on Vickers Aircraft (pp571-577), the VC1 was the Viking; the VC2 Viscount; VC3 a proposed civil Varsity; VC4 a variety of jet transport schemes; VC5 a long range civil derivative of the Valiant for BOAC; VC6 (Vanjet) a short range version of the VC5 for BEA; VC7 was used twice - once for the Vickers 1000 and also for another Valiant derivative which superseded the VC6; nothing known of the VC8 and VC9; VC11 was a smaller VC10; VC12 was the Hunting H107 which became the BAC 1-11.
There appears to be no consistent correlation between the VC numbers (used for projects) and the first digit of the Vickers Type numbers (used for actual aircraft designs).