Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 04-Feb-2020

Henryk Brzeski was an engineer and builder of the first Polish aviation engine in 1907. It was a bi-rotary engine.

Brzeski, motor V2
"Brzeski"

-The patent and drawings were acquired by Siemens and Gnome companies.

-The engine was tested by Brzeski in Vienna.

-The engine was known as "Iskra" (Spark) and was a 7-cylinder radial, bi-rotary engine that drove two contra-rotating propellers. It delivered 70 hp.

-Two new photographs of Henryka Brzeskiego's Aquila airplane with the bi-rotary engine called Iskra.

-This was in the year 1910.

Aquila airplane with Iskra engine

Aquila airplane with Iskra engine
"Aquila airplane with Iskra engine"

-In 1926/27, H. Brzeski made the “Pocisk”.

Brzeski from 1927
"Brzeski from 1927"

-Hereafter he designed another engine in 1929, although it seems that it was carried out at PZ-Skoda. This was another barrel engine that delivered 137 hp.

Brzeski from 137 CV
"Brzeski from 137 CV"

-It had inclined fins, arranged this way to facilitate the dynamic air flow caused by advance or a possible front fan.

Engines of BRZESKI

Model: ”Iskra”, bi-rotatorio, 7 cils, 70 HP
Model: ”Pocisk”, (1926-27)
Model: Barril, 5 cils. 137 HP

The author of this edition of Aeroengines AtoZ, through Aeroteca, collaborated on Version 2 of this video, which is presented here.

To understand the operation of the connecting rods, the 1929 Continental R 670 single-cylinder engine was chosen.

A demonstration of Version 3, improved at the author's suggestion, is also available on YouTube at a later date. This version shows bronze valve guides, improved valve spring movement, and the split crankshaft counterweights and front bearing balls also move.

The design is from Juan Soler, Sant Cugat, Barcelona

Below we show a flash of version 3

Counting also with the coloboration of JMC of Enginys Mecanics in Mataro, Barcelona