The S 328 was a conventional two-seat, single-engine biplane of
Czech design. Originally intended for the Finnish air force (who ended
up not buying any), the S 328 was used by Czechoslovakia (after the
German annexation, the Luftwaffe and the Slovak air force). A small
number (around 60) were sold to Bulgaria. Slightly under 450 of the
basic model were built.
Slovakia used them from the start of the war as scouts and light
bombers; they later used them in anti-partisan duties in Russia. The
Germans primarily used them as trainers, but in 1942 began using them
on the Eastern Front in night harassment attacks.
The S 328 uses 21 gallons of aviation fuel per hour.
Subassemblies: Medium Fighter chassis +3,
Light Fighter-Bomber Wings with Biplane option +3, three fixed wheels
+0
P&P: 474 kW aerial HP gasoline engine w/ 474-kW prop with
186-gallon standard tank [Body]; 4000-kWs batteries
Occ: 2 XCS
Cargo: 9 Body
Armor
All: 2/3C
Wheels: 2/3
Weaponry
2xAircraft LMG/7.92mm Ceska-Zbrojovka Mk 30 [Wings:F] (500 each)*
2xAircraft LMG/7.92mm Ceska-Zbrojovka Mk 30 [Body:B] (500 each)**
550-lb bomb [Body:U]
4x110-lb bombs [Wings:U]
* fired linked
** fire linked
Equipment
Body: medium range radio transmitter and receiver, 550-lb
hardpoint. Wings:
250-lb hardpoint each
Statistics
| Size: 34'x45'x11' | Payload: 1.12 tons | Lwt: 2.94 tons |
| Volume: 200 |
Maint.: 55 hours | Price: $13,100 |
HT: 9
HP: 120 [body], 125 [each wing], 12 [each wheel]
| aSpeed: 174 |
aAccel: 5 |
aDecel: 31 |
aMR: 7.5 | aSR: 2 |
| Stall: 40 mph |
Design Notes
Design aSpeed was 153 mph. Historical wing surface
area was 722 sf. The body and wings use the Cloth Armor option.
Cost, weight and HPs of the wings were divided by two. Loaded weight
was increased 5%
The aircraft did not carry maximum fuel and maximum bombload at the
same time. With a full load of bombs, it was restricted to 100 gallons
of fuel. With a full fuel tank, it was limited to 400 lbs of bombs. The
design above assumes a light fuel load and maximum bomb loadout.
The "cargo" space should be treated as empty space in the tail..
The S 328 V was a target tug equipped with floats. Four were built.
The sole S 428 was a grount attack version, armed as the S 328 N.
The S 528 was equipped with a 597-kW engine (aSpeed 195). Six were
built.