Wealthy French silk merchant Armand Deperdussin
founded his aircraft-building company Societe
Pour les Appareils Deperdussin (SPAD) at Betheny near Reims, in 1910. He
was fortunate in employing Louis Bechereau to be responsible for the
running of the company and later engaged a young engineering
graduate named Andre Herbemont. These two brought undying fame to the
original short-lived SPAD organization, which went into liquidation in
1913 after Deperdussin had been arrested for embezzlement.
Bechereau designed a series of monoplanes of
increasing capability, perfecting a monocoque form of fuselage
construction that combined a desirable circular cross-section with light
weight and strength. Typically, the Deperdussins were braced high-wing
monoplanes, two king-posts on the forward fuselage carrying a skein of
wires to brace the slender wings Lateral control was by wing warping.
Landing gear was normally of fixed tailskid type, but sea plane versions
had, for their day, a very neat float installation Power was provided
for most of the range by Gnome rotary engines of various power outputs.
A first major success came on 9 September 1912, when
a Deperdussin powered by a 119-kW (160hp) Gnome and piloted by Jules
Vedrines won the fourth James Gordon Bennett Aviation Cup race at
Chicago, Illinois. Even greater were the achievements of 1913, Maurice
Prevost winning the first Schneider Trophy race at Monaco on 16 April,
the Gordon Bennett Cup at Reims, France, on 29 September, and setting a
world absolute speed record of 203 85 km/h (126.67 mph) on the same date.
To complete the year's achievements, a Deperdussin piloted by Eugene
Gilbert won the Henry Deutsch de la Meurthe air race around Paris on 27
October. Thus, in a few months Bechereau and Herbemont had created for
Deperdussin the world's fastest prewar aeroplane from this pinnacle of
achievement came collapse of the Deperdussin company. It was taken over
by Louis Bleriot and renamed Societe Pour L'Aviation et ses Derives
(also SPAD), which gained fame for its products during World War I.
The first plane to break the 200 kph (124 mph)
'barrier', and the first Schneider Trophy winner, was Armand
Deperdussin's monoplane. It was the 'speed phenomenon' of the years
before the First World War. The plane was developed early in 1912 by
Louis Bechereau, the designer for the Societe pour les Appareils
Deperdussin. Bechereau worked from an idea by Swedish engineer Ruchonnet,
and developed a streamlined monocoque plywood fuselage with a large
spinner.
To achieve maximum power two Gnome rotaries were mounted on a
common crankshaft. The first noteworthy achievement of this plane was
the 1912 Gordon Bennett Cup, which it won with a
speed of 108.1 mph (174.01 kph). The plane won the cup again the
following year, on September 29,1913 in Reims, Maurice Prevost achieving
an average of 124.6 mph (200.5 kph). During this race the plane beat the
world speed record three times, and its maximum speed was 126.7 mph
(203.85 kph).
A few months earlier, in April 1913, Prevost had won
another exceptional victory at the controls of the floatplane version of
the Deperdussin monoplane: first place in the first race for the
Schneider Trophy in Monaco, with an average speed of 45.75 mph (73.63
kph). The low speed was due to the fact that the judges made Prevost
repeat his take-off and about six miles (lOkm)
of the course because of a supposed violation of the rules. This
Deperdussin victory was the only time in the history of the Schneider
Trophy (1912-31) that France won a race.