CLW Curlew

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JimK

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SPF contributor Motocar posted to his website this cutaway of the CLW Curlew. The post referenced his source, an archival version of the German magazine Flugsport for 1937. I couldn't find a thread for CLW here at SPF, so I started this one as this airplane contains some structural details worthy of the cutaway that some members might find interesting. Wikipedia has a good history of the company and this airplane, and I included, on the cutaway, a couple of their opening sentences to explain the structural innovation. I also found a legend for the numbers in the Flugsport article which, I believe, came from The Aeroplane. CLW Curlew Flugsport 1937.jpg
 
JimK said:
SPF contributor Motocar posted to his website this cutaway of the CLW Curlew. The post referenced his source, an archival version of the German magazine Flugsport for 1937. I couldn't find a thread for CLW here at SPF, so I started this one as this airplane contains some structural details worthy of the cutaway that some members might find interesting. Wikipedia has a good history of the company and this airplane, and I included, on the cutaway, a couple of their opening sentences to explain the structural innovation. I also found a legend for the numbers in the Flugsport article which, I believe, came from The Aeroplane.View attachment 709803
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Greetings and thanks for the reference to my work. It was not until today 12-12-2024 that I saw the note
 
Apophenia said:
Since this seems to be our sole C.L.W.-related thread, we should also mention the C.L.W.'s unbuilt CA.1 feederliner (which Flight described as a "twin-engined transport monoplane"). A paraphrased description follows:

Construction of this twin was to be very similar to that of the Curlew trainer. That is, a monocoque Dural fuselage with integrally-built tail fin. The wings are built-up of duralumin tubing and channels with internal diagonally bracing. The Dural-covered centre section had a parallel-chord and was dihedral-less (as originally planned for the Curlew). The structure of the outer wings was similar but these panels were fabric-covered (as were all duralumin-framed control surfaces).

A rather short nose was surmounted by the canopy for a 2-seat cockpit. The cabin sat 7 passengers and was to be 12 feet (3.65 m) long, 5.08 feet (1.55 m) high, averaging 4.33 feet (1.32 m) wide. Aft is a 45 cu. ft. (1.27 m3) lavatory of, behind which is a 34 cu. ft. (0.96 m3) luggage compartment. Span was to be 52 feet (15.85 m); length 32.25 feet (9.83 m); height, 10 feet (3.04 m). Tare weight was to be 3,152 lb (1,430 kg); all-up weight 6,100 lb (2767 kg); or in overloaded condition 6,400 lb (2,903 kg). The wing loading is 21.3 lb./sq. ft. (102.5 kg/m2)

Initial C.A.1 performance was to be 209 mph (336 km/h) at sea level when powered by 2 x 270 hp Armstrong Siddeley Cheetah V radials. With moderately-supercharged engines - the 290-to-320 hp Cheetah IX - "maximum speed at altitude should be considerably increased."

No C.L.W. CA.1 feederliner was ever built - C.L.W. intended to commence construction of a prototype only once an order had been received. That now sounds a bit naïve but, obviously, C.L.W. lacked the wherewithal to build prototypes of both 1936 designs.
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