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| To provide a potential successor to the B 534 in service
with the Czechoslovak air arm, the Ministry of National
Defence prepared an outline requirement for a singleseat
fighter monoplane in late 1935. To meet this requirement,
Ing Frantisek Novotny designed the B 35 for
which a two-prototype contract was awarded in 1936.
The B 35 was of mixed construction, with wooden
wings covered by plywood bonded to an outer duralumin
skin - a stressed skinning similar to Plymax that
was being used for the Morane-Saulnier MS 405 - and a
welded steel-tube fuselage with duralumin panelling
forward and fabric skinning aft. With an HS 12Ydrs
rated at 860hp at 4000m, the first prototype,
the B 35.1, flew on 28 September 1938. It was re-engined
with an HS 12 Ycrs which, similarly rated to the
Ydrs, made provision for a 20mm cannon in the Vee of
the cylinders, but it crashed on 21 November, being replaced
in the test programme on 30 December 1938 by
the second prototype, the B 35.2. This featured some increase in fuselage cross section, smaller ailerons and
extended flaps. Work continued after the German
annexation of Bohemia and Moravia, a third prototype,
the B 35.3, flying on 26 June 1939. This had a retractable
undercarriage, a non-elliptical wing leading edge and
an armament of one 20mm cannon and two 7.92mm
machine guns. Prior to the commencement of flight
test, the B 35.3 was exhibited at the Salon de
l'Aeronautique in Brussels as the Avia 135.
 | A three-view drawing (1673 x 1260) |
| MODEL | B-35 |
| CREW | 1 |
| ENGINE | 1 x 860hp Hispano-Suiza 12Ycrs |
| WEIGHTS |
| Take-off weight | 2200 kg | 4850 lb |
| Empty weight | 1690 kg | 3726 lb |
| DIMENSIONS |
| Wingspan | 10.25 m | 34 ft 8 in |
| Length | 8.50 m | 28 ft 11 in |
| Height | 2.60 m | 9 ft 6 in |
| Wing area | 17.23 m2 | 185.46 sq ft |
| PERFORMANCE |
| Max. speed | 485 km/h | 301 mph |
| Cruise speed | 344 km/h | 214 mph |
| Ceiling | 8200 m | 26900 ft |
| Range | 610 km | 379 miles |
| ARMAMENT | 1 x 20mm |
| lxbfYeaa, e-mail, 14.03.2024 05:47 20 reply | | Jurax, e-mail, 01.07.2017 22:09 Armament was one engine-mounted 20 mm canon H.S.404 (60 rounds in drum magazine) and two 7,92 mm machine guns vz.30 (Mk. 30) in the nose. reply |
| huawuke, 18.06.2011 10:57 my mistake, on the picture should be the B-35.3. :o)
The B-35.1. was the prototype with the "non-retractable landing gears". reply | | Leo Rudnicki, e-mail, 23.08.2009 18:13 The Heikel 70 is considered to be the greatest influence on elliptical wing planforms, though not the first or only. The fuselage construction was more Hurricane than Spitfire, tube and rag. The original wings were wood, elliptical and with fixed gear. The B 135 supplied to Bulgaria had metal wings with straight leading edges and retractable gear. Bulgaria was licensed to build more but didn't. 4 Bulgarian B 135's reportedly shot down a B-24 in 1944. reply | |
| | Honza C, e-mail, 23.08.2009 08:24 Great looking plane, and certainly has some resemblances to the Schmitfire or the other way around I guess since this came before.. except for the chin radiator. How do you think this plane would have help against the Bf-109D, and E's in service at the time of Fall Grun? reply | | Radek, e-mail, 11.02.2009 16:32 no, Avia was sooner than the first spitfire, so Spitfire is accordance our Avia, that is for sure. reply |
| Vaclav, 16.06.2008 21:16 The aircraft on the picture is Avia B 135 or its prototype. reply | | Martin P., e-mail, 11.11.2007 11:25 Sorry, my mistake, on the picture should be the B-35.3. :o)
The B-35.1. was the prototype with the "non-retractable landing gears". reply | | Martin Pener, e-mail, 11.11.2007 11:22 First prototypes´s flight on September 28th 1938. Engine HS 12Ycrs. Max. speed 485 km /h. Because of the ocupation of Czech in March 1939, it was not produced.
On the picture we can probably see prototype B-35.1. - the earlier version had only "fixed - non-retractable" landing gears (Sorry I don´t know the right English terms for this.)
However, on the base of this type, was (under the German control and also technological suport) in 1942 producet the type Avia B-135 for Bulgaria. Max. speed 535km /h, Because the speed was in the 1942 wery small, the Bulgaria bourgt only 12 planes. reply | | 3VI, e-mail, 22.09.2007 09:24 Spitfire-inspired wings and landing gear? reply |
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Do you have any comments?
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All the World's Rotorcraft |
Radek
The 20 mm gun was never mounted...
reply