Hi Hesham!
From V. Němeček. Československa letadla (I) 1918-1945. - Praha, Naše vojsko, 1983. - P.201.
Engine: Walter Major 6 (190/205 hp). Maximum speed (estimated): 300 km/h.
Be-54 was two-seat low-wing fixed landing gear light aircraft project of 1936,called
Super Beta,powered by one Major 6 engine.
Be-55 was two-seat elementary school trainer low-wing aircraft project,with retractable
landing gear.
Be-57 was a high-speed tourist low-wing aircraft project,with fixed landing gear and
powered by one Major 6 engine.
Be-74 was a twin engined low-wing medium bomber project of 1936,with retractable
landing gear,estimated speed of 370 km/h,and powered by two Walter Sagitta
engines.
Be-75 was a high-speed low-wing mail carrier aircraft project of 1936,with retractable
landing gear,estimated speed 500 km/h and powered by two Walter Sagitta
engines.
Be-84 was a low-wing eight-seat light transport aircraft project of 1936,with retractable
landing gear and powered by two Walter Sagitta engines.
Be-87 was a low-wing light bomber aircraft project of 1937,with retractable landing gear
and powered by two 515 hp Walter mars engines.
Be-700 & Be-590 was a four engined low-wing light transport aircraft projects of 1939,with
retractable landing gear and powered by four Mikrony (700) or Minory (590)
engines.
Be-700 & Be-590 was a four engined low-wing light transport aircraft projects of 1939,with
retractable landing gear and powered by four Mikrony (700) or Minory (590)
engines.
"Pavel Beneš made around 1914 more than ten different studies of various sporting and passenger airplanes with one to four seats, most of them as tailless arrow-shaped monoplanes. One of those studies was the Type A from 1914 with the span of 7 m / 23 ft, lenght 3,5 m / 11 ft 6 in and take-off weight of 175 kg / 386 lb. Projected engine was a motorcycle V2 with 7,3 kW / 9.9 hp take-off power, cruising powere would be half of that. "
Hi,
at the beginning of 1935 ing. Benes (after previous work in Avia and CKD-Praga) founded the aviation department in the company of ing. Mraz. Ing. Mraz owned a company where he manufactured refrigeration equipment and decided to expand his business portfolio. Their joint venture was successful and within four years (until March 1939, when the occupation of Czechoslovakia by Nazi Germany began) the company built a total of thirteen prototype aircraft and delivered nearly one hundred aircraft to customers. In addition to serial aircraft, many projects were created by this company, let's imagine those that have been preserved in the NTM aviation archive...
The study of the all-wood four-seater Be.54 "Super-Beta" dates from April 1936. Apart from the drawing, the NTM archive does not preserve even the basic dimensions of this aircraft. It was to be powered by a 190 hp Walter Major 6 engine.
Hi,
project of the Benes-Mraz Be.55 „Beta-Minor" trainer aircraft. Even for this project the dimensions are not shown on the original drawing. The scale of the drawing is also missing... Engine: Walter Minor 85 hp.
Hi,
the Benes-Mraz Be.75 was a project for a two-seater aircraft for the transport of express mail (300 kg) from the turn of 1936/37.
Engine: 2*Walter Sagitta 450 hp, wingspan: 17 m, length: 11,25 m, height: 2,6 m, empty weight 2 600 kg, standard gross weight 3 900 kg, maximum speed: 500 km/h, cruising speed 410 km/h, service ceiling 9 000 m, range 1 700 km.
Hi,
the project of the Benes-Mraz Be.82 all-wooden ten-seater aeroplane from 1937. There are no dimensions or scale on the original drawing... Engine: 4*Walter Major 6 190hp.
Hi,
Benes-Mraz Be.84, a project from 1937. Engine: 2*Walter Sagitta 450hp, wingspan: 17 m, length: 11,75 m, height: 3,15 m, empty weight 2 480 kg, standard gross weight 3 930 kg, maximum speed: 460 km/h, cruising speed 355 km/h, service ceiling 9 000 m, range 1 200 km.
Hi,
Benes-Mraz Be.87, a two-three-seat fighter and attack aircraft project from November 1937. The aircraft was of all-wood construction, only the fuselage was welded from chrome-molybdenum tubes and covered with canvas.
Armament: one 20mm machine gun and two 7.92mm machine guns were located in the nose of the aircraft. The gunner had one 7.92 mm machine gun for rear hemisphere defence. The bomb bay, which was located in the fuselage, contained 200 kg of bombs. Engine: 2*Walter Mars 14 M 700 hp (Gnome-Rhône 14M engine licence), wingspan: 12,7 m, length: 9,0 m, height: 2,8 m, empty weight 2 300 kg, standard gross weight 3 400 kg, maximum speed at 0 m altitude: 490 km/h, maximum speed at an 4 000 m altitude: 560 km/h, cruising speed at an 4 000 m altitude: 465 km/h, service ceiling 9 600 m, range 800 km.
Hi,
project of four-engine (Walter Sagitta 450 hp) Benes-Mraz Be.88 aircraft from the turn of 1936/37. Dimensions and scale are missing on the original drawing...
Hi,
the Benes-Mraz Be.90 was a light fighter aircraft project from 1937. This type was of mixed construction. The wing consisted of continuous and it had an all-wood structure. The skinning consisted of birch plywood 1,5 mm. The slotted ailerons and split flaps were also of all-wood construction. The fuselage had an oval cross-section and was welded from Cr-Mo steel tubes. The front part of the fuselage (up to the rear wing spar) was covered with duralumin sheets, the rear part of the fuselage had a canvas covering. The tail surfaces were also all-wood, similar in construction to the wings.
The robust main undercarriage, had fork legs welded from steel plates enclosing oil-pneumatic shock absorbers. The tyres where of 500*150 mm. The wheel brake were mechanically. Two machine guns (7.92 mm calibre) were located under the wing in the undercarriage cover. The power-plant consisted of inverted , inline twelte-cylinder, air -cooled engine Walter Sagitta (Engine version without compressor and propeller reducer with 400 hp). The Letov propeller was metal, ground-adjustable.
wingspan: 8,5 m, length: 7,15 m, height: 2,07 m, empty weight 800 kg, standard gross weight 1 100 kg, maximum speed at 0 m altitude: 450 km/h, maximum speed at an 4 000 m altitude: 520 km/h, service ceiling 10 000 m.
Salut,
Projet d'avion quadrimoteur (Walter Sagitta 450 ch) Benes-Mraz Be-88 du tournant des années 1936/37. Les dimensions et l'échelle manquent sur le dessin original...
Hi,
project of four-engine (Walter Sagitta 450 hp) Benes-Mraz Be-88 aircraft from the turn of 1936/37. Dimensions and scale are missing on the original drawing...
Hi,
the Benes-Mraz Be-91 project of 1937 was based on the Be.90 type. It differed from the Be-90 type mainly by a different version of the Walter Sagitta engine I 560 hp (MR version, M stood for a mid-altitude flight compressor and R for propeller geared drive). The Be-91 type also had a retractable landing gear and different armament compared to the Be-90 type (one 20mm gun, Oerlikon license).
Wingspan: 8,5 m, length: 7,18 m, height: 2,3 m, empty weight 880 kg, standard gross weight 1 210 kg, maximum speed at 0 m altitude: 430 km/h, maximum speed at an 4 000 m altitude: 500 km/h, service ceiling 9 250 m.
Only this drawing of the Be-91 type is preserved in the NTM archive.
Hi,
the third of the Benes-Mraz light fighter aircraft projects was the Be.92 type from the end of November 1937. It had a mixed construction like the Be-90&91. The wing consisted of continuous and it had an all-wood structure. The skinning consisted of birch plywood 1,5 mm. The slotted ailerons and split flaps were also of all-wood construction. The fuselage had an oval cross-section and was welded from Cr-Mo steel tubes. The front part of the fuselage (up to the cockpit) was covered with duralumin sheets, the rear part of the fuselage had a fabric covering. The tail surfaces were also all-wood, similar in construction to the wings. The armament consisted of four 7.62 mm machine guns. The power-plant consisted engine Walter Sagitta I-S 550 hp (version without propeller reducer). The 3 bladed propeller was metal, adjustable on the ground.
Wingspan: 8,0 m, length: 6,75 m, height: 2,05 m, empty weight 980 kg, standard gross weight 1 300 kg.
Hi,
the Benes-Mraz Be.100 was a "fast two-seat aircraft" project (as written on the original drawing) from 1937. The dimensions and scale of the drawing are not shown on the original drawing... Engine: Walter Minor 6 130-150 hp.
Hi,
the Benes-Mraz Be.151 was an all-wooden trainer and sport aircraft project from 1938. Two variants of the project were developed, which differed in the shape of the cabin and chassis.
Engine: Walter minor 6 140-150 hp, wingspan: 11,4 m, length: 7,65 m, height: 2,1 m.
Hi,
the Benes-Mraz Be.152 was an all-wooden trainer and sport aircraft project from 1938. Two variants of the project were developed, differing in engine type. Be.152C: Engine: Walter Minor 6 140-150 hp, wingspan: 11,4 m, length: 7,45 m, height: 2,1 m.
Be.152: Engine: Walter Scolar 6 140-150 hp, wingspan: 11,4 m, length: 7,45 m, height: 2,1 m.
Hi,
The Benes-Mraz Be.350&350B of May 1939 was an all-wood trainer project. It was also designed for towing gliders.
Be.350: Engine: Walter Minor 4 85-95 hp, wingspan: 12,15 m, length: 7,7 m, height: 2,8 m, empty weight: 525 kg, standard gross weight: 777 kg, maximum speed at 0 m altitude: 160 km/h, cruising speed: 135 km/h, range: 550 km, service ceiling: 3 500 m
Be.350B: Engine: Walter Minor 4 85-95 hp, wingspan: 10,65 m, length: 7,7 m, height: 2,8 m.
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