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The first flight of the definitive and highly altered Š.231 version was on March 17, 1933. After testing at the
Czechoslovak flight facility at Prague-Lethany, modifications were undertaken to improve the machine's performance. It entered production the following year and began equipping Czech
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was a fighter aircraft produced in
Czechoslovakia in the early 1930s in a number of variants. All of the aircraft had metal tubular framing and fabric covering with a metal engine cowling.
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are vague, but at least three machines survived the war and were used by victorious
Nationalists. The operational performance and ultimate fate of the Š.331 is unrecorded.
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200 L (53 US gal; 44 imp gal) main fuselage tank with a 100 L (26 US gal; 22 imp gal) centre-section gravity tank
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until the German occupation of
Czechoslovakia in 1939. The sole Š.331 and 22 out of 24 produced Š.231s were sold to representatives of the
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Two fixed forward-firing 7.7 mm (0.303 inch) machine guns mounted in fuselage nose, one similar weapon in pod beneath each lower wing,
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While the Š.31, Š.131, Š.231, and Š.431 had engines of 480 to 680 hp, the Š.331 had a 670 kW (900 hp)
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In May 1935, the aircraft established a new
Czechoslovak altitude record of 10,650 m (34,941 ft).
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fighter units in June 1936. The machines however did not remain in frontline fighter status with the
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Tschechoslowakische
Flugzeuge : von 1918 bis heute, Jane's All the World's Aircraft 1934
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engine, giving it outstanding performance for an aircraft of the early 1930s.
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348 km/h (216 mph, 188 kn) at 5,000 m (16,000 ft)
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9-cylinder air-cooled radial piston engine, 412 kW (553 hp)
579:. London: Sampson Low, Marston & company, ltd. pp. 91c–92c.
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Letov Š-31 3-view drawing from L'Aérophile
December,1929
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Letov Š-331 photo from Le
Pontential Aérien Mondial 1936
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Tschechoslowakische
Flugzeuge : von 1918 bis heute
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300 km/h (190 mph; 160 kn) at sea level
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5,000 m (16,000 ft) in 8 minutes 13 seconds
505:
List of aircraft of the
Spanish Republican Air Force
554:(in German). Berlin, DDR: Transpress. p. 142.
484:Six small bombs at hard points beneath lower wings
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425:310 km/h (190 mph, 170 kn)
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453:82.5 kg/m (16.9 lb/sq ft)
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116:. Reports of their combat record in the
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431:450 km (280 mi, 240 nmi)
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594:Letov S.231/S.331/Spain (Republicans)
577:Jane's All the World's Aircraft 1934
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838:1920s Czechoslovak fighter aircraft
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462:0.245 kW/kg (0.149 hp/lb)
339:10.06 m (33 ft 0 in)
13:
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500:List of Interwar military aircraft
333:7.85 m (25 ft 9 in)
14:
869:
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351:21.5 m (231 sq ft)
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853:Single-engined tractor aircraft
437:9,300 m (30,500 ft) *
345:3 m (9 ft 10 in)
263:– main production version with
385:2-bladed fixed-pitch propeller
1:
510:
441:9,750 m (31,990 ft)
363:1,715 kg (3,781 lb)
357:1,243 kg (2,740 lb)
114:Spanish Republican government
858:Aircraft first flown in 1929
198:Spanish Republican Air Force
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77:Spanish Republican Air Force
7:
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550:Mau, Hans-Jaochim (1987).
255:Pratt & Whitney Hornet
176:Slovak Air Force (1939–45)
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154:Czechoslovakian Air Force
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575:Grey, C.G., ed. (1934).
289:Armstrong Siddeley Tiger
318:General characteristics
235:– initial version with
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296:Specifications (Š-231)
249:– racing version with
110:Czechoslovak Air Force
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73:Czechoslovak Air Force
525:"Letov S-231 / S-331"
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377:Walter Mercury V-S2
69:Primary users
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291:engine (one built)
281:engine (one built)
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445:Time to altitude:
439:Absolute ceiling:
222:– Post civil war.
220:Spanish Air Force
118:Spanish Civil War
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45:Type of aircraft
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802:XLF-207 Laminar
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287:– version with
277:– version with
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241:Bristol Jupiter
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398:Maximum speed:
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494:Related lists
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451:Wing loading:
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61:First flight
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797:LF-107 Luňák
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533:. Retrieved
531:(in Russian)
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630:Letov Kbely
535:28 December
391:Performance
383:Propellers:
373:Powerplant:
279:Walter K.14
125:Walter K.14
88:Letov Š-231
33:Letov Š-31
832:Categories
817:ST-4 Aztek
807:LK-2 Sluka
561:3344001213
511:References
458:Power/mass
349:Wing area:
243:(33 built)
102:Letov Š-31
337:Wingspan:
309:Data from
134:Operators
848:Biplanes
632:aircraft
489:See also
468:Armament
227:Variants
169:Slovakia
343:Height:
331:Length:
267:-built
253:-built
239:-built
42:Fighter
558:
482:Bombs:
429:Range:
271:engine
265:Walter
237:Walter
210:
188:
166:
792:L-290
787:L-101
476:Guns:
325:Crew:
285:Š-431
275:Š-331
261:Š-231
247:Š-131
213:Spain
191:Spain
64:1929
55:Letov
38:Role
19:Š.31
812:LK-3
782:Š-50
777:Š-39
772:Š-33
767:Š-32
762:Š-31
757:Š-28
752:Š-27
747:Š-25
742:Š-22
737:Š-21
732:Š-20
727:Š-19
722:Š-18
717:Š-17
712:Š-16
707:Š-14
702:Š-13
697:Š-12
692:Š-11
687:Š-10
556:ISBN
537:2019
375:1 ×
233:Š-31
100:The
682:Š-9
677:Š-8
672:Š-7
667:Š-6
662:Š-5
657:Š-4
652:Š-3
647:Š-2
642:Š-1
251:BMW
834::
527:.
622:e
615:t
608:v
564:.
539:.
460::
327:1
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