Dear Boys and Girls, here is an article in French about the SNCAC Centre NC-150 high altitude medium bomber prototype. The NC-150 prototype actually had three engines; a third Hispano-Suiza 12Xirs engine mounted in the upper fuselage above the bomb-bay drove a NC-CI supercharger for the two Hispano-Suiza 12Y 32/33 engines. The NC-150 had replaced the NC-140 "project" as the Armée de l'Air 's new high altitude bomber programme in 1938.....
In the Autumn of 1939, development of the composite wood/metal NC-150 was redirected to be a non-pressurised and non-strategic back-up insurance against any further disruption to the production of the Amiot 350 series and the Lioré & Olivier LeO 45 series......
The article comes from the 1st October 1965 issue of Aviation Magazine International......
Terry (Caravellarella)
Attachments
SNCAC Centre NC-150-01 bombardier stratosphérique - Aviation Magazine International - No.jpg
In a similar installation, the Tupolev TB-7 prototypes had a Klimov M-100 housed on top of the centre-section to drive a supercharger for their Mikulin AM-34FRNs. Two production aircraft had the same arrangement.
It's probably the best and strongest part of the fuselage to hold a third engine Grey Havoc. On the NC-150, the third engine is mounted above the rear-spar carry-through structure. The dorsal air intake is behind the offset cockpit canopy, the exhaust ports are flush with the fuselage upper decking and the ventral radiator is under the cockpit......
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