Bartel BM-4

The Bartel BM-4 was a Polish biplane primary trainer aircraft used from 1929 to 1939 by the Polish Air Force and Polish civilian aviation manufactured in the Samolot factory in Poznań. It was the first plane of Polish design put into production.

Jak-7, Rwd-8, Taube, SAAB 105, Bartel Bm-4, Vultee BT-13 Valiant, von R. D. O.1

Made by Podlaska Wytwórnia SamolotówSamolot.

Le Bartel BM-4 est un avion biplan biplace d’école polonais de l'Entre-deux-guerres.2
Height Main
2.93 m
Height Alt
292.1
Stall Speed Main
57.0
Length Alt
723.9
Jet Or Prop
prop
Range Main
275.0
Loaded Weight Main
800.0
Max Speed Alt
5160.0
Type Of Prop
4
Introduced
1929
Loading Main
32
Power/mass Main
Power/mass Alt
244.8
Max Speed Main
138.0
Cruise Speed Main
110.0
Ceiling Main
2
100 m
Number Built
~75
Crew
2.0
Retired
1939
Loaded Weight Alt
1760.0
Cruise Speed Alt
4080.0
Area Main
25 m²
Primary user
Polish Air Force
Useful Load Alt
548.0
Span Alt
1016.0
Plane Or Copter?
plane
Power Alt
120 hp
Engine(prop)
de Havilland Gipsy III or Walter Junior 4
Manufacturer
Podlaska Wytwórnia Samolotów
Samolot
Number Of Props
1
First Flight
20
Production End Year
1932
Climb Rate Main
1.8 m-s
Power Main
90.0
Production Start Year
1928
Stall Speed Alt
2100.0
Climb Rate Alt
350.0
Length Main
7.25 m
Span Main
10.17 m
Area Alt
269.0
Range Alt
10200.0
Useful Load Main
249.0
Empty Weight Main
551.0
Ceiling Alt
6900.0
Category
Biplane aircraft
Polish civil trainer aircraft 1920-1929
Polish military trainer aircraft 1920-1929
Propeller aircraft
Single-engine aircraft
Produced
1928
Empty Weight Alt
1212.0
Loading Alt
7

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