Wyniki wyszukiwania - BazTech

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Fatigue Degradation of the Structure of Parachute Systems

Szafran K., Kramarski I.

Fatigue of Aircraft Structures

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2018

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Iss. 10

93--103

EN

Parachute systems are in widespread use in aviation. Up to now, parachutes are the most uncertain air vehicles because of their complex and unsteady opening characteristics, changes in geometry up to 30% and vulnerability from unsteady atmospheric turbulence. Fatigue is a problem that the designers of long living parachute systems need to cope with. Authors demonstrate complexity of parachute exploitation and means to lower opening forces and extend service life without influencing safety.

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Badania symulacyjne elementów konstrukcyjnych modułowego napędu platformy badawczej na poduszce powietrznej

Szafran K., Kramarski I., Pągowski Z.

TTS Technika Transportu Szynowego

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2015

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R. 22, nr 12

1464--1468, CD

PL

W artykule omówiony został proces przeprowadzenia badań symulacyjnych elementów modułu zespołu napędowego do platformy na poduszce powietrznej. W badaniach wykorzystano oprogramowanie komputerowe Annsys Fluent a także pakiet programowy firmy Multi Wing. Autorzy także proponują zastosowanie takiego sposobu prze-prowadzenia symulacji do badań napędów aerodynamicznych do samolotów lekkich, bezzałogowców i innych urządzeń wykorzystujących zespoły wentylatorów osłonięte pierścieniem aerodynamicznym. W trakcie prac zaprojektowano i przebadano nowy profil aerodynamiczny o symbolu ILot-HR przeznaczony dla pierścieni osłaniających wentylator lub śmigło. Rezultaty badań przedstawiono na wykresach.

EN

Paper presented a process simulation testing powertrain components within the module to the platform on a cushion of air. The study used the software por-rowe Annsys Fluent and software package of Multi Wing. The authors also propose the use of this method to simulate aerodynamic testing drives for light air-craft, drones and other devices with fan assemblies covered aerodynamic ring ( fan). During the works are designed and tested a new aerodynamic profile symbol Ilot-HR designed for protecting the Rings for fan or propeller. The results are shown in graphs.

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Safety of Navigation on the Approaches to the Ports of the Republic of Poland on the Basis of the Radar System on the Aerostat Platform

Szafran K., Kramarski I.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2015

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Vol. 9, no. 1

129--134

EN

The report depicts technical and organizational possibilities with an aim to increase situational awareness and sea travel safety on the entry to Polish seaports on the base of the dedicated radar system on the aerostat platform. The radar system based on the aerostat can work at the altitude of 3,000 meters, which allows detecting sea vessels and low level flying aircrafts in the range of 150 nm and more. The aerostat based in Siemirowice gives opportunities to monitor movements of sea vessels all over the South Baltic Sea, starting with the Lithuanian seaside with Klaipeda seaport in the east where the sea enters Zatoka Gda?ska and Trójmiasto seaports, movements along the whole Polish seaside up to Sund Straid near Copenhagen and sea routes all along south Swedish coast. On those bases, it is possible to observe movements of sea transports of special interest including Maersk’s big container vessels and gas delivering vessels to Lithuania and to ?winouj?cie. The proposed radar system is using solutions of towed aerostats tested in working conditions which are exploited by the United States of America to monitor its border with Mexico and to observe movements of sea vessels and low flying aircrafts around Florida Peninsula and Puerto Rico islands on the Caribbean. The radar systems used by the USA are depicted with organizational rules of their exploitation. Advantages and these advantages of such a radar system were depicted and some information about dangers related to aerostat’s exploitation is also provided. Additional possibilities of using the radar system based on the aerostat are depicted in the role of a new and important part of the country’s defense system.