SPAD
S.XIII
The S.XIII was the culmination of a
series of single seat fighter planes produced by the Societe Pour l'Aviation et
ses Derives (SPAD) for the Allied forces in WWI. It was the one of the most-produced planes of WWI, with 8,472
examples built. It was used by nearly
all the Allied forces, including France, England, Italy, Belgium and the United
States. Post-war, the craft was
exported to Japan, Czechoslovakia and Poland.
At its introduction in May 1917, the S.XIII's superior speed and durability
countered the effectiveness of contemporary German aircraft, and the plane was
in very high demand. It did, however,
suffer from poor maneuverability at slow speeds, poor gliding characteristics,
and a very sharp stall. Eventually, in
the summer of 1918, it was outclassed by the Fokker D.VII; nevertheless, some
10,000 unfulfilled orders were canceled at war's end. The plane continued in U.S. service until 1920.
The plane has an endurance of 2
hours. A full load of fuel and ammo
costs $11.
Subassemblies:
Recon Fighter chassis +2; Recon Fighter wings with Biplane option +2; 2 fixed
wheels +0.
Powertrain: 164-kW HP gasoline engine with 164-kW old
prop and 30-gallon fuel tank [Body].
Occ.: 1 XCS Body
Cargo: 8.9 Body
Armor F RL B T U
Body: 1/2C 1/2C 1/2C 1/2C 1/2C
Wings: 1/2C 1/2C 1/2C 1/2C 1/2C
Wheels: 2/3 2/3 2/3 2/3 2/3
Weaponry:
2xAircraft
LMG/7.7mm Vickers .303 LMG [Body:F] (250 rounds each).
Statistics:
Size: 20'x26'x8' Payload: 0.21
tons Lwt.: 0.93 tons
Volume: 96
Maint.: 122 hours Cost:
$2,686
HT: 7.
HPs: 15 Body, 50 each Wing, 3
each Wheel.
aSpeed: 134
aAccel: 4 aDecel:
19 aMR: 5
aSR: 1
Stall
Speed: 40 mph. Take Off and Landing
Runs: 160 yards.
gSpeed: 212
gAccel: 10 gDecel:
10 gMR: 1.25
gSR: 2
Ground
Pressure: High. 1/6 Off-Road Speed.
Design
Notes:
Historical wing area was 217 sf. Design loaded weight was 1670 lbs.; it was
increased 10% to the historical. Design
aSpeed as 132 mph. Historical values
were used for all calculations when available.
MG load-outs are a guess; no exact figures are available, but one source
quoted a 320 lb. "military load" (whatever that means). The Body MGs are synchronized, lowering RoF
by 10% (see p. W:MP8). Using the
calculated gSpeed at 1/6 Off-Road speed (35 mph) gSpeed is still 88% of stall
speed, so the plane could therefore potentially get airborne in a bumpy field,
at the GM's discretion.
Variants:
The S.VII (1916) had a 112-kW
engine. It was armed with a single
Vickers LMG. Its huge success until
early 1917 caused the French ace Georges Guynemer to lobby for an improved
version, which became the S.XIII.
The S.XII (1917) had a 149-kW engine, and
increased armament to one LMG and one 37mm cannon. It met with limited success.
The S.XVII (1918) had a 224-kW
engine. The armament was reduced to one
MG, but had two cameras for reconnaissance missions. Only 20 examples were built before war's end.
From the Aerodrome for GURPS
© 2008 by Jim Antonicic