Bartel BM 6
title: "Bartel BM 6" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["bartel-aircraft", "single-engined-tractor-aircraft", "biplanes", "1930s-polish-military-trainer-aircraft", "aircraft-first-flown-in-1930"] topic_path: "arts/film" source: "https://en.wikipedia.org/wiki/Bartel_BM_6" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::data[format=table title="Infobox aircraft"]
| Field | Value |
|---|---|
| name | Bartel BM 6 |
| image | Bartel BM-6.png |
| type | Trainer aircraft |
| manufacturer | Samolot |
| first_flight | 8 April 1930 |
| status | Prototype |
| primary_user | Polish Air Force |
| number_built | 1 |
| :: |
|name =Bartel BM 6 |image =Bartel BM-6.png |caption = |type =Trainer aircraft |manufacturer =Samolot |designer = |first_flight = 8 April 1930 |introduction = |retired = |status = Prototype |primary_user = Polish Air Force |more_users = |produced = |number_built = 1 |unit cost = |variants =
The Bartel BM 6 was a Polish biplane trainer fighter aircraft of 1930. It did not advance beyond the prototype stage.
Design and development
The aircraft was designed by Ryszard Bartel in the Samolot factory in Poznań, as a trainer-fighter plane. The BM-6 prototype, designated BM 6a, was flown on 8 April 1930 in Poznań. Its advantage was an easy construction and maintenance, according to Bartel's design philosophy. A distinguishing feature of all Bartels was an upper wing of a shorter span, because lower and upper wing halves were interchangeable (i.e. the lower wingspan included the fuselage width). It first introduced a mixed construction to Bartel's designs.
After trials, the prototype was modified in July 1930. The prototype was later redesignated BM 6a/II after it was substantially modified. It offered quite good flight characteristics and was capable of aerobatic flight. It was demonstrated in a fighter-plane competition in Bucharest in 1930, along with the similar PZL P.1.
The second prototype BM 6b, with a Wright Whirlwind 220 hp radial engine, was ordered, but work upon it ceased with closure of the Samolot factory in mid-1930. The PWS works, which inherited many of Samolot's projects, did not continue the project, for it had its own similar design, the PWS-11.
Description
Mixed construction biplane. Steel framed fuselage, rectangular in cross-section, canvas covered (engine and upper sections - aluminum covered). Rectangular two-spar wings with rounded ends, plywood and canvas covered. Upper wing span: 7.36 m, lower wing span: 8.10 m. Lower and upper wing halves were interchangeable. Single pilot, sitting in open cockpit, with a windshield. The V8 engine Hispano-Suiza 8Be was modified to lower power output (from 220 hp to 180 hp). Radiator below the fuselage. Fixed landing gear, with a rear skid. Two-blade wooden propeller of fixed pitch. Fuel tank in fuselage: 168 L capacity.
Operational history
After state trials in 1931, the prototype was used in an advanced training school in Grudziądz, then in an aviation training center in Dęblin.
Operators
;
- Polish Air Force (single prototype)
Specifications (BM 6a)
|ref=Polish Aircraft 1893–1939 |prime units?=met General characteristics
|crew=1 |length m=6.35 |span m=8.09 |height m=2.8 |wing area sqm=17.6 |aspect ratio= |airfoil= |empty weight kg=697 |gross weight kg=985 |max takeoff weight kg= |max takeoff weight lb= |max takeoff weight note= |fuel capacity=170 L |lift kg= |lift lb= |lift note= |more general= Powerplant
|eng1 number=1 |eng1 name=Hispano-Suiza 8Be |eng1 type=V-8 water-cooled piston engine |eng1 hp=180
|prop blade number=2 |prop name=Heine fixed pitch propeller |prop dia m= |prop dia ft= |prop dia in= |prop dia note= Performance
|perfhide=
|max speed kmh=194 |max speed note=atsea level |cruise speed kmh= |cruise speed mph= |cruise speed kts= |cruise speed note= |stall speed kmh= |stall speed mph= |stall speed kts= |stall speed note= |never exceed speed kmh=420 |range km= |range miles= |range nmi= |range note= |combat range km= |combat range miles= |combat range nmi= |combat range note= |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance= |ceiling m=3800 |g limits= |roll rate= |climb rate ms= |climb rate ftmin= |climb rate note= |time to altitude=4 minutes 24 seconds to 1000 m; 18 minutes 57 seconds to 3000 m |wing loading kg/m2=56 |fuel consumption kg/km= |fuel consumption lb/mi= |power/mass=0.138 kW/kg (0.084 hp/lb) |thrust/weight=
|more performance= Armament
|guns= 7.7 mm Vickers machine gun in a fuselage, with a synchronising gear
References
References
- Cynk, Jerzy B.. (1971). "Polish Aircraft 1893–1939". Putnam.
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