You can find more technical discussions and original design drawings on the Secret Projects Forum .
The Bristol Type 159 was a four-engined heavy bomber designed to meet the British Air Ministry's . It is often nicknamed the "Beaubomber" because it was essentially a significantly upscaled version of the successful Bristol Beaufort.
: Bristol engineers aimed to utilize their experience with the Blenheim and Beaufort. The Type 159 was intended to be longer than the Beaufort and featured a distinctive twin-fin tail design.
: The initial design called for Bristol Hercules engines, though the Rolls-Royce Griffon was considered a potential future substitute.
British B.1/39 Heavy Bomber Competition - Secret Projects Forum
While the filename "(159).jpg" is generic and used across many different digital libraries, it is most notably associated with historical design documents for the , a proposed British heavy bomber from the early 1940s. The Bristol Type 159 "Beaubomber"