Letov
S 328
The S 328 began development in 1932 to
fulfill a Finnish interest in the earlier S 28 reconnaissance biplane. Ultimately, Finland never ordered the plane,
but the design was adopted by the Czech Air Force. Production began in 1934, with 445 planes being built. Surviving planes were confiscated by the
Nazis in 1939 and used as trainers or given to allied nations such as Bulgaria
and Slovakia. Czech pilots again flew
the plane in 1944 on reconnaissance missions during the National Uprising.
The plane has a crew of two: pilot and observer. The pilot has two fixed MGs on the upper wing, and the observer has two pintle-mounted MGs trained to the rear. The plane burns 23.7 gallons of aviation fuel per hour at routine usage. A full load of fuel and ammo (excluding bombs) costs $24.
Letov S 328
Subassemblies:
Light Fighter chassis +3; Medium Fighter wings with Biplane option +2; 2 fixed
wheels +0.
Powertrain: 474-kW aerial HP gasoline engine with 474-kW
old prop and 90-gallon standard fuel tank [Body]; 4,000-kWs battery.
Occ.: 1 XCS, 1XRCS Body
Cargo: 3 Body
Armor F RL B T U
Body: 2/2C 2/2C 2/2C 2/2C 2/2C
Wings: 2/2C 2/2C 2/2C 2/2C 2/2C
Wheels: 2/3 2/3 2/3 2/3 2/3
Weaponry:
2xAircraft
LMG/7.92mm Skoda [Wing:F] (500 rounds each).*
2xAircraft
LMG/7.92mm Skoda [Body:B] (500 rounds each).*
1,100
lbs. Bombs [Body and Wings:U].
*Linked
Equipment:
Body: Navigation instruments, medium radio
transmitter and receiver, casemate and high-angle mount for the rear MGs. Wings:
Two hardpoints at 220-lbs. each.
Statistics:
Size: 34'x45'x11' Payload: 1.06
tons Lwt.: 2.91 tons
Volume: 144 Maint.: 55
hours Cost: $13,449
HT: 8.
HPs: 100 Body, 160 each Wing, 8
each Wheel.
aSpeed: 174
aAccel: 4 aDecel:
20 aMR: 5
aSR: 1
Stall
Speed: 51 mph. Take-Off Run 260
yards. Landing Run 260 yards.
gSpeed: 204
gAccel: 10 gDecel:
10 gMR: 0.5
gSR: 2
Ground
Pressure: Extremely High. No Off-Road
Speed.
Design
Notes:
Historical wing area was 424 sf. The fuel capacity was based on a rough calculation
between range (410 miles) and gas consumption, as no historical value could be
located. MG load outs are a guess. Design payload was 1.09 tons; the historical
value has been substituted. Design
aSpeed was 169 mph. The cost, weight,
and HPs of the chassis were doubled to increase design weight; design weight
was further increased 6% to the historical.
Performance calculations were based on historical values for wing area
and loaded weight. The observer's seat
was unusually roomy; in the design it is modeled with 1.5 crew stations.
Variants:
The S 328N was a night-fighting version
with four fixed MGs. 13 built.
The S 328V was a floatplane version for
target towing. 4 built.
The S 438 featured a 485-kW engine and
four fixed MGs; only one was built.
The S 538 (1935) was powered by a 597-kW
engine, with a top speed of 205 mph.
Six were built for the Czech air police.
From the Aerodrome for GURPS
© 2008 by Jim Antonicic