The Morane-Saulnier M.S.302 was an intermediate step between the M.S.300 of 1930 and the M.S.315 of 1932. The M.S.300 was powered by a 95hp Salmson engine. It was followed by the M.S.301 which used a 100hp Lorraine 5Pa engine. The M.S.315 itself used a 135hp Salmson 9Nc radial engine. No details have been found for the M.S.302 but it would seem fair to assume that it used an alternative engine of some sort.
How to cite this article:
Rickard, J (11 July 2012), Morane-Saulnier M.S.302 , http://www.historyofwar.org/articles/weapons_morane_saulnier_MS302.html