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Avia B.135


Single-Seat, Single-Engine Monoplane Fighter Aircraft


Czechoslovakia | 1942



"The Czech-originated Avia B.135 fighter fought for the Bulgarian Air Force for a time during World War 2."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Avia B.135 Single-Seat, Single-Engine Monoplane Fighter Aircraft.
1 x Hispano-Suiza 12Ycrs V-12 liquid-cooled inline piston engine developing 860 horsepower.
Propulsion
332 mph
535 kph | 289 kts
Max Speed
27,887 ft
8,500 m | 5 miles
Service Ceiling
342 miles
550 km | 297 nm
Operational Range
2,660 ft/min
811 m/min
Rate-of-Climb
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Avia B.135 Single-Seat, Single-Engine Monoplane Fighter Aircraft.
1
(MANNED)
Crew
27.9 ft
8.50 m
O/A Length
35.6 ft
(10.85 m)
O/A Width
5.2 ft
(1.60 m)
O/A Height
4,553 lb
(2,065 kg)
Empty Weight
5,622 lb
(2,550 kg)
MTOW
Armament
Available supported armament and special-mission equipment featured in the design of the Avia B.135 Single-Seat, Single-Engine Monoplane Fighter Aircraft .
STANDARD:
1 x 20mm cannon in propeller hub
2 x 7.92mm machine guns in wings (one per wing)
Variants
Notable series variants as part of the Avia B.135 family line.
B.135 - Base Series Designation; twelve examples completed.
DAR 11 "Ljastuvka" - Proposed designation of locally-produced B.135 aircraft in Bulgaria; none completed.


Authored By: Dan Alex | Last Edited: 09/15/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

Though originating as a Czech pre-war design (through the Avia B.35 venture), the B.135 was utilized during World War 2 (1939-1945) solely under the banner of the Bulgarian Air Force. The type was a modern, low-wing monoplane originally developed for the Czech Air Force to a 1935 requirement by the Ministry of National Defence. Three progressive B.35 prototypes emerged - two prior to the German occupation of March 1939 and the third after. The Bulgarian Air Force flew the B.35/2 prototype during November of 1939 and followed this in June of 1940 with trials of the B.35/3. The latter was accepted as the B.135 to which the German Air Ministry allowed the aircraft to be locally produced for Bulgaria out of Lovech. The Bulgarian Air Force commissioned for twelve of the fighters along with a stock of engines (62).

The B.135 retained many of the qualities ironed out in the final B.35/3 prototype. The original prototype's construction involved wood wings but this was given up in the finalized form to carry all-metal wings. Standard armament became 1 x 20mm cannon firing through the propeller hub and 2 x 7.92mm machine guns in the wings. The undercarriage was retractable while of the "tail-dragger" arrangement. The pilot sat under an enclosed canopy with generally adequate views of the surrounding action - the position of the wing mainplanes (forward of midships) and the raised fuselage spine did little to help.

Beyond the original twelve on order, a further fifty examples were to emerge from Bulgarian lines under the designation of DAR ("Darzhavna Aeroplanna Rabotilnitsa") 11 "Ljastuvka" ("Swallow") to help shore up Bulgarian air strength. The first twelve units arrived during the middle part of 1942 though the engine portion of the procurement foundered and left just 35 delivered. This forced Bulgarian reliance on the German Messerschmitt Bf 109 fighter crop.

Most of the B.135's wartime use was in training primarily due to unreliable engines. At least four participated in an operational-level manner during a March 30th, 1944 interception sortie which yielded a downed enemy bomber - the only known air kill of the war by the B.135 series.

Total production of the B.135 stood at the original twelve units.

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Operators
Global customers who have evaluated and/or operated the Avia B.135. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 12 Units

Contractor(s): Avia Motors - Czechoslovakia
National flag of Bulgaria

[ Bulgaria ]
1 / 1
Image of the Avia B.135
Image from the Public Domain.

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