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Development and research of a hybrid power unit for ultralight aircraft: an innovative approach to energy efficiency and operational flexibility

Wróblewski Piotr, Świątek Piotr, Kachel Stanisław, Zyska Tomasz

Combustion Engines

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2024

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R. 63, nr 2

83--96

EN

This scientific article presents an innovative concept of a hybrid power unit designed for ultralight aircraft, with the aim of improving energy efficiency and operational flexibility. As part of the development of the system, the construction of the combustion unit and the electric motor / generator, which are the key elements of this solution, was described. The advanced internal combustion engine controller and the bi-directional energy conversion converter have been developed and built to enable optimal cooperation of both energy sources. In order to carry out experimental research on the developed system, a special test stand was built on which a prototype drive unit was mounted. The results of the research include preliminary performance characteristics of the prototype drive unit and an analysis of the achievements that indicate the potential benefits of using such a hybrid drive unit. The article also summarizes the conclusions and recommendations for further work on improving this innovative solution.

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Three faces of balancing: the development of automatic balancing devices for shafts in motion

Krygier Michał, Żak Paweł, Podsędkowski Leszek, Wróblewski Piotr, Podsędkowski Maciej

Archive of Mechanical Engineering

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2023

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LXX, nr 3

351--366

EN

In this paper, the authors present a novel construction of an automatic balancing device applicable to balancing shafts working in a heavily polluted environment. The novelty of the presented system lies in the fact that its utilization requires no changes to be made in the already existing shafts. Also, the system is capable of working during the operation of the balanced shaft, so there is no need to stop it. The propulsion system is based on eddy current braking, therefore no wires need to be used in the device. During the development process of the system, three iterations of the device were created. Each iteration is presented, described, and discussed. The advantages and drawbacks of each version are pointed out and explained thoroughly. The correctness of the design was verified by the created devices that were assembled and fixed on shafts to prove the design assumptions.

3

Innowacyjny system autonomicznego wyważania wałów

Żak Paweł, Krygier Michał, Podsędkowski Leszek, Wróblewski Piotr, Podsędkowski Maciej

Prace Naukowe Politechniki Warszawskiej. Elektronika

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2022

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z. 197, t. 2

275-284

PL

W niniejszym artykule opisana jest konstrukcja innowacyjnego urządzenia do automatycznego wyważania wałów. Zaprezentowaną konstrukcję echują: niewielkie rozmiary, łatwość montażu oraz zwarta i szczelna konstrukcja, co sprawia, że może zostać z powodzeniem zastosowana w środowisku o znacznym zapyleniu, czyli np. w elektrowniach, cementowaniach. W pracy przybliżono aktualny stan wiedzy, listę intonujących obecnie stosowanych urządzeń wraz z ich cechami, opis nowatorskiego podejścia, dyskusję oraz podsumowanie.

EN

In this paper we discuss the construction and work principle of a system to be used in terms of an automatic balancing process of shafts being in motion. The presented solution could be successfully used in power plants, etc, as its being defined by the possibility to work in highly polluted environment. The paper includes state of the art presentation, a short outline of existing systems along with their drawbacks, the description of a novel device, short discussion and a summary.