Letov Š-228E

     
Název:
Name:
Letov Š-228E Letov Š-228E
Originální název:
Original Name:
Letov Š-228E
Kategorie:
Category:
průzkumný/pozorovací letoun reconnaissance/scout aeroplane
Výrobce:
Producer:
DD.MM.1932-DD.MM.1932 Vojenská továrna na letadla Letov, Letňany /
Období výroby:
Production Period:
DD.MM.1932-DD.MM.1932
Vyrobeno kusů:
Number of Produced:
5
První vzlet:
Maiden Flight:
DD.MM.RRRR
Osádka:
Crew:
2
Základní charakteristika:
Basic Characteristics:
 
Vzlet a přistání:
Take-off and Landing:
CTOL - konvenční vzlet a přistání CTOL - conventional take-off and landing
Uspořádání křídla:
Arrangement of Wing:
dvouplošník biplane
Uspořádání letounu:
Aircraft Concept:
klasické conventional
Podvozek:
Undercarriage:
pevný fixed
Přistávací zařízení:
Landing Gear:
kola wheels
Technické údaje:
Technical Data:
 
Hmotnost prázdného letounu:
Empty Weight:
1478 kg 3258 lb
Vzletová hmotnost:
Take-off Weight:
2121 kg 4676 lb
Maximální vzletová hmotnost:
Maximum Take-off Weight:
? kg ? lb
Rozpětí:
Wingspan:
13,20 m 43 ft 3 ¾ in
Délka:
Length:
9,50 m 31 ft 2in
Výška:
Height:
3,20 m 10 ft 6in
Plocha křídla:
Wing Area:
39,18 m2 421.73 ft2
Plošné zatížení:
Wing Loading:
39,6 kg/m2 8.11 lb/ft2
Pohon:
Propulsion:
 
Kategorie:
Category:
pístový piston
Počet motorů:
Number of Engines:
1
Typ:
Type:
Gnome-Rhône Mercury VII o výkonu 368 kW/500 hp
dvoulistá dřevěná vrtule
Gnome-Rhône Mercury VII, power 793 hp
two-blade wooden propeller
Objem palivových nádrží:
Fuel Tank Capacity:
? ?
Výkony:
Performance:
 
Maximální rychlost:
Maximum Speed:
258 km/h v ? m 160 mph in ? ft
Cestovní rychlost:
Cruise Speed:
230 km/h v ? m 143 mph in ? ft
Rychlost stoupání:
Climb Rate:
? m/s ? ft/min
Čas výstupu na výšku:
Time to Climb to:
11,75 min do 4000 m 11,75 min to 13123 ft
Operační dostup:
Service Ceiling:
7300 m 23950 ft
Dolet:
Range:
800 km 497 mi
Maximální dolet:
Maximum Range:
? km ? mi
Výzbroj:
Armament:
1x pevný 7,7mm kulomet Vickers
1x pohyblivý 7,7mm kulomet Lewis
1x fixed .303 Vickers machine gun
1x flexible .303 Lewis machine gun
Uživatelské státy:
User States:
Poznámka:
Note:
- -
Zdroje:
Sources:
Němeček, V. Československá letadla 1918-1945, Naše Vojsko, Praha 1983.
L+K 1998/05.
URL : https://www.valka.cz/Letov-S-228E-t8384#23882 Version : 0
Because already in 1931 it was clear that even the last development version of the series Letov Š-X28 marked Š-128 was not the most suitable solution to the problems of the new aircraft, the second prototype Š-128 was equipped with a new engine Gnome-Rhone Mercure VII supplemented by an automatically adjustable two-position metal propeller. The newly modernized aircraft was subjected to testing and flight tests and the subsequent decision of the management The flight was, supplemented by the civil matriculation OK-VOT, sent on September 14, 1931 on a demonstration trip to the Baltic states. Here he was particularly interested in the assessment commission of the Estonian Air Force. She expressed interest in purchasing the aircraft, but on the condition that its controllability will be improved when operating on unpaved surfaces and increased stability in flight.

As a working name for Š-128 reconstructed according to Estonian requirements, the designation Š-128SM was chosen. The aircraft received a new landing gear with hydropneumatic shock absorbers and an increased vertical and horizontal tail area. The reconstructed aircraft was redesignated the Š-228 after flying. Based on the order, 4 Š-228E aircraft were then produced for the Estonian Air Force. The original prototype aircraft was left in the possession of the factory Letov and in February 1932 it was sent under the designation OK-VOU to another demonstration trip to the Baltics, focusing mainly on Finland. It crashed here a month later, but the interest it aroused in Finland gave rise to another version marked Š-328.

Sources:
V. Němeček: Czechoslovak Air Force 1
Author's archive
URL : https://www.valka.cz/Letov-S-228E-t8384#180865 Version : 0
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Letov Š-228E -


URL : https://www.valka.cz/Letov-S-228E-t8384#27360 Version : 0
http://www.airwar.ru/enc/other1/letovs228.html
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Letov Š-228E -


URL : https://www.valka.cz/Letov-S-228E-t8384#433670 Version : 0
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