Savoia-Marchetti SM.95 - Design and Development

Design and Development

The SM.95 was announced in 1937, when the future was seen in the 4-engined aircraft. Until that time Italy has mainly used 3-engined aircraft. The SM.95, designed by Alessandro Marchetti, first flew on 8 May 1943. Originally named SM.76 it was fitted with four 750 hp A.R. 126 RC.34. In 1939 the project was renamed SM.95C (C for Civil), with the more powerful Alfa Romeo RC.18 (860 hp) engine.

With the start of World War II, this project was stopped until December 1941, when L.A.T.I. called for a 4-engined useful for South American routes. It had, nevertheless, inferior performances compared to P.108C and Z.511A, both metallic and more powerful. But the new SM.95 had lower costs and a swifter development.

The aircraft was similar to other contemporary airliners, but the construction was mixed. Welded steel was used for the fuselage structure, with light alloy covering fitted to the nose, underside and rear fuselage, and fabric covering for the fuselage sides and roof. The three-spar wing was also of wooden construction, with plywood skinning. The engines drove three-bladed metal Constant speed propellers.

The two pilots sat side by side in an enclosed cockpit, while behind them sat the Flight engineer (on the left) and radio operator (on the right). Behind the cockpit, there was normally seating for 20-30 passengers, with up to 38 being able to be carried over short ranges.

There was an initial need for a bomber version, SM.95B, with enhanced engines and a weapon set. Nevertheless, the first to fly was the SM.95C, on 3 August 1943, at (Vergiate), with Guglielmo Algarotti flying.