I think the 'super Mosquito' and 4 engine projects are being confused. The twin Sabre-engined project was supposed to carry a 4000lbs bomb load and basically ran out of steam and as the evolution of the Merlin allowed the developed MkXVI to meet pretty much all of the requirements.

Carrying 16 000 lbs in a 46 000 lbs, fast, unarmed bomber looks a bit much; the Lancaster's 'routine' load was up to 14 0000 lbs in a 63 000 lbs aeroplane while the Canberra, with jet engines, fitted 6000 lbs internally on a 46 000 lbs airframe. On the basis that a twin-engined Mosquito could carry 4000 lbs of bombs perhaps a four-engined should carry about 8000lbs - mathematically simple but consistent with the other payload and weight figures.

I would also tend towards a 3-man crew like the Canberra - the tasks and technology the crew would have had to manage would have been reasonably similar. Weight management would be critical to this aircraft to maintain the height/speed capabilities which would allow it to avoid most night fighter attacks.

Regards

GeorgeC

No confusion on my part between the two projects.

Anyhow George my original figures were based on a scale up using the maximum load to airframe tare figures of the B.MK IV and I never said the load was 16,000 lbs of BOMBS rather I was making a guesstimate of an airframe tare weight of around 29,000 - 30,000 lbs with an MTOW of 46,0000lbs...which was Buttler's figure. Anyhow my "dimensional" scaling factor was not a direct 1.5X (that came from the 1/72 to 1/48th comparo) but rather 1.6X.

B. Mk. IV tare weight was13,400 lbs, MTOW was 21,462 lbs. Load factor of 1.6.

Lancaster tare weight was 37,000 lbs, MTOW was 65,000 lbs in the I, II, IX, 68,000lbs for the VII. Load factors of 1.75 and 1.83 respectively.

Halifax III tare was 38,900 lb, MTOW 65,000 lb with 13,000 lb of bombs. Load factor of 1.67.

So using the known figure of 46,000 lbs and multiplying by .62 (factor generated by dividing the B.Mk.IV tare of 13,400 by the MTOW of 21,462) we arrive at an airframe weight of 28,520...more than double the tare of the Mosquito. I then added a fudge factor for weight increase caused by airframe growth and pushed it up to between 29,000 lbs (ideal) and 30,000 lbs (more likely). The resulting load factor is in the 1.5 range...less than both the Halifax and the Lancaster, and thus entirely within the range of possibility.

An 8,000lb bomb load would be at the top end, 10,000 lbs of fuel and 6,000 lbs of bombs would be more likely for a long-range mission.

Cheers, Jon