Bartel Projects

[hesham]

Hi,


http://www.secretprojects.co.uk/forum/index.php/topic,12064.0.html


BM-1 - 1925, single-seat fighter, single-engine high-wing parasol monoplane with fixed undercarriage, only project.


BM-3 - 1926, two-seat advanced trainer, single-engine biplane with fixed undercarriage, only project.


BM-7 - 1974-1978, single-seat aerobatic aircraft, single-engine biplane with fixed undercarriage, only project.


http://www.samolotypolskie.pl/samoloty/437/126/Bartel-BM-12

 

[hesham]

Hi,


and here is a 3-view to Bartel BM-1 Project.

 

[hesham]

Hi,

In the years 1911–1912 Ryszard Bartel designed the first plane, and intending to commence its construction purchased various aviation materials at the liquidated Warsaw Airline.

However, the construction of the aircraft did not start.remained a Project.

samolotypolskie.pl - Bartel samolot 1912

 

[hesham]

From , SWP T70 - RWD.8,

what was BM-X ?.

 

[avion ancien]

Bicycle motocross?

 

[hesham]

Bicycle motocross?

What ?.

 

[Arjen]

It's a joke.
https://en.wikipedia.org/wiki/BMX

 

[hesham]

Translate,

this equipment will be used as liaison machines (H.28;
two copies per squadron) and
school (BM-4 "with Peterlot engine
80 hp or other", BM-5 "with engine
Wright 220 hp") in the event of an explosion
military conflict. Assumed at
that training one pilot
will wear out 1/5 of the plane
BM-4, and in the case of a liner aircraft
or fighter and 1/7 of the BM-5 transitional aircraft in the case of a pilot
linear machine. A transitional machine
for training fighter pilots had
be the type then marked as
BM-X, which in this role ultimately never
did not exist. Prototypes of the Bartel BM-6 training and hunting machine
were created, but their serial production on
the collapse of WWS, devastated by fire, stood in the way.

 

[Apophenia]

In the context of that clipping, it helps to know that the H.28 'Motylek' ('Butterfly') was a revised Hanriot HD 14 airframe. Your whole clipping translates something like this:

... this equipment will be used as liaison machines (H.28; two copies per squadron) and training machines (BM-4 "with an 80 hp Peterlot [7-cylinder radial] or similar engine", BM-5 "with a 220 hp Wright [Whirlwind] engine") in the event of the outbreak of war . It was assumed that the training of each pilot would account for 1/5 of the BM-4 fleet (in the case of a frontline fighter aircraft), and 1/7 of a BM-5 transitional trainer (in the case of frontline pilots). The transitional machine for training fighter pilots was to become the BM-X type which, ultimately, never appeared in this role. Prototypes of the Bartel BM-6 trainer/fighter were built but serial production of this type was prevented by the collapse of WWS, devastated by fire.

As of November 10, 1930, the Polish Air Force had: 150 Hanriot 14/28 [HD 14E2/H.28] aircraft, 55 Hanriot [HD] 19 aircraft, 45 Morane-Saulnier [AR/MS 35] machines, 21 Bartel BM.4s , 57 Bartel BM-5s (with nine more were under construction) and two prototypes of the Bartel BM-6.

So, the unbuilt Bartel BM-X would seem to have been a dedicated fighter-trainer variant of the BM-5. That suggests that either the BM-X was eclipsed by the BM-6 or that BM-X was a 'placeholder' designation. Perhaps, once actually built, the BM-X design was redesignated BM-6.