User:TheLongTone/Mammoth

74, crahed on first flight due to inadequately braced tail surfaces

The Blériot 75 or Blériot Aérobus was a four engined passenger aircraft produced by Blériot-SPAD immediately after the first world war. Only the single prototype was built.

Developed from the Blériot 74 bomber, the Type 75 used the same backward staggered five-bay equal-span wing assembly, the struts forming the innermost bay havingan X arrangement that was connected to the engine nacelles. The upper wing was straight, while the lower had pronounced dihedral (aeronautics}.  It was powered by four 300 hp Hispano-Suiza 8Fb engines, one pair mounted on the upper wing and the other pair on the lower wing.

It had a crew of two and could carry 28 passengers, seated on two levels.

eight wheeled undercarriage, the Biplane tail with aerodynamically balanced elevators on both surfaces and twin rudders. Novel aileron balance mechanism, with the balancing surface mounted on a pivoted arm in front of the wing leading edge and linked to the aileron by cables.

First flown in late 1919 by Joseph Sadi-Lecointe. On 19 January 1920 it crashed during a trial flight at Buc, fatally injuring Bartholot.

It was repaired ...http://www.flightglobal.com/pdfarchive/view/1919/1919%20-%201054.html?search=bleriot...or rebuilt: this ref has slightly greater span & wrea,,,and made some trial flights at the end of the year Piloted by Jean Casale Demonstration flights at the aviation meeting at Buc in October 1921 In November 1921 a trial flight with a full load managed to reach an altitude of 2700 m and remain aloft for nearly two hours.