Gnome Monosoupape 100 h.p.

Description

Product

Gnome Monosoupape 100 h.p.

Description

One of the best engines of the early years of aviation was built by French designer-engineer Laurent Seguin in 1913. Seguin had already had five years' experience of building aero engines; however, his 5- and 7-cylinder 'Gnomes' had structural weaknesses (the automatic intake valves were too often out of balance, springs failed etc). To eradicate these problems, Seguin decided to completely remove the induction valves, instead using a clever arrangement of intake ports around the cylinders this involved the role of the valve being played by the piston itself.
The new engine appeared to be successful enough and gained its full name of Gnome Monosoupape (translated from the French, 'single valve'). Sir Thomas Sopwith, the outstanding British aircraft designer, later called the Monosoupape "one of the greatest single advances in aviation". Mass production of Monosoupapes began in 1914. Most widespread were two basic types: the 7-cylinder Gnome Lambda, and the 9-cylinder Gnome Delta. The 7-cylinder version very quickly showed limited suitability for the greater and greater demands placed on engines in the conditions of a rapidly growing air force; however, the more successful Delta version became an impetus for the much improved Gnome Monosoupape 9N, which had an increased capacity and an increased RPM (up to 1350). The power of the Gnome Monosoupape 9N grew to 160 h.p.