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1

Analysis of Failure States of Functional Systems of Aircraft Such as Boeing 737 in the Airline

Terescenko Jevgenijs, Shestakov Vladimir, Vaivads Andris

Transactions on Aerospace Research

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2023

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Nr 4 (273)

71--78

EN

The article presents the results of analysis of failures of the main functional systems units of aircraft Boeing 737 during the last 10 years of its operation in the national airline of Latvia ‘Air Baltic Corporation’. Total flight time was T∑ = 322,529 h and 184,538 cycles [1]. These data were obtained from daily reports of defects and unplanned consumption of spare parts for these systems. Failures of instrumental equipment of avionic systems were investigated in detail. Based on calculations of their failure probability and component replacement frequency, a comprehensive system including measures and their technical and instrumental support has been developed to improve maintenance productivity. Such a system requires relatively inexpensive components, is simple and can be used in the operation of this type of aircraft.

2

Analiza osiągów nowego typu wiropłatu

Łusiak Tomasz, Witczak Radosław, Małek Arkadiusz

Autobusy : technika, eksploatacja, systemy transportowe

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2019

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R. 20, nr 6

206--211

PL

W artykule dokonano analizy osiągów nowo projektowanego wiropłatu. Przedstawiono także nową koncepcję wyposażenia i użycia wiropłatów w celach transportowych. Praca skupia się na zastosowaniu w tych celach wiatrakowców jako szczególnego rodzaju wiropłatów o specyficznych własnościach. Opracowany i opisany wstępny projekt statku powietrznego obejmuje założenia konstrukcyjne, rozwiązania technologiczne, ergonomię kabiny/ładowni, ekonomię i bezpieczeństwo eksploatacji. Szczególną uwagę zwrócono na wyposażenie wiropłata w zależności od tego do jakiej wersji ma być docelowo skonfigurowany. Praca zawiera także projekt wstępnej geometrii wiropłatu. Przedstawiono bryłę uwzględniającą sformułowane założenia, które posłużą do analizy numerycznej. Na jej podstawie została dokonana przybliżona analiza wyznaczenia podstawowych osiągów i rozkładu mas w zależności od wersji wyposażenia. Ponadto przedstawiono sposób przeprowadzenia analizy numerycznej bryły wiropłatu oraz jej wyniki wraz z ich opracowaniem. Dokonano analizy wyników symulacji numerycznej i sformułowano wnioski dotyczące słuszności zastosowania wiatrakowców do celów transportowych.

EN

The article analyses the performance of the newly designed rotorcraft. A new concept for the equipment and use of rotorcraft for transport purposes was also presented. The work focuses on the use of gyroplanes for these purposes as a special type of rotorcraft with specific properties. The initial aircraft design developed and described includes structural assumptions, technological solutions, cabin / cargo ergonomics, economy and operational safety. Particular attention has been paid to rotorcraft equipment depending on which version it is to be configured to. The work also includes the design of the initial geometry of the rotorcraft. A solid showing the formulated assumptions that will be used for numerical analysis is presented. On its basis, an approximate analysis was made of the determination of basic performance and mass distribution depending on the equipment version. In addition, the method of numerical analysis of rotorcraft body and its results together with their development is presented. The results of numerical simulation were analyzed and conclusions regarding the correctness of gyroplanes for transport purposes were formulated.

3

Possibility of processing parameters obtained from on-board flight data recorders for diagnostics and predicting reliable operation periods of important aircraft equipment.

Ogonowski K., Kozuba J.

Zeszyty Naukowe. Transport / Politechnika Śląska

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2017

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z. 95

133-143

EN

In recent years, much attention has been paid to the recording of flight data in order to provide objective information concerning routine and emergency in-flight situations. The data recorded can be used for assessing the air mission execution by the pilot and flight safety breaches, for specifying some damage to the equipment, and for preventing faulty equipment from being used in flights. Flight data recorders (FDRs) are commonly known as “black boxes”. This article presents issues related to flight data acquisition and preparing the data for later use, as well as their impact on flight safety. The systems recording and processing selected parameters not only enable ongoing diagnostics, but also make it possible to predict the period of further reliable operations and to analyse the causes that led to possible damage. In addition to improving economic indicators of the aircraft operation, flight safety is improved. Obviously, the article will only discuss certain ways of enhancing safety by applying the processing of data obtained from FDRs. Nevertheless, I believe it will offer an overall view of how important it is to collect, process and properly analyse such data for diagnostics, prediction and flight safety.

4

Economic problems of aircraft equipment recovery

Poplavska Z., Kalynovskyy A.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

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2016

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Vol. 5, No 1

89--96

EN

The formation of effects of different order in the process of aircraft equipment recovery is investigated. Changes of idle time of aviation equipment, depending on the cost of its recovery and maintenance are estimated. Economic problems of reasonable implementation of qualitative aircraft recovery are considered. Unlimited theoretical limits of costs on assuring the quality of aircraft equipment recovery are shown on the graphs. Suggestions for reasonable limits of the cost on aircraft equipment recovery are grounded. It was established that the definition of economic efficiency of providing quality of aircraft equipment recovery requires accounting not only the cost but also the obtained effects. The model showing the possible operating modes of aircraft equipment is presented. Its partial review allows to evaluate the difficulties of calculating the economic effect of providing quality of aircraft equipment recovery. Theoretical aspects of economic effect formation of quality of aircraft equipment recovery are investigated. It is stated that the annual economic effect from assuring quality of recovery and maintenance of aircraft equipment, resulting in operation of aircraft equipment (the effect of the secondorder), occurs in the form of savings and avoided losses for two reasons. First, eliminate losses due to non-compliance of technical parameters of aircraft equipment to normative and technical values. Second, due to changes in the operating costs connected with the elimination of aircraft equipment idle time due to technical reasons. Also, certain effect can be created in general within the whole branch of economics where aircraft equipment is used. Calculation of economic effect requires distinguishing between savings and avoided losses. Potential loss can be the cost of the aircraft equipment itself and damages that it may cause in case of falling. Also, losses can occur due to bad providing of technical condition indicators, and therefore efficiency of aircraft equipment causes inadequate change of operating costs and process in which it participates.

5

Estymacja azymutu z wykorzystaniem pomiarów inercjalnych

Dąbrowski W., Popowski S.

Prace Instytutu Lotnictwa

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2010

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Nr 4 (206)

13-19

PL

W artykule przedstawiono metody wyznaczania kierunku północnego w oparciu o pomiary inercjalne. Opisano ideę girokompasu, przyrządu który zrewolucjonizował na początku XX wieku pomiar kursu na statkach i okrętach. Przedstawiono procedurę girokompasowania stosowaną od połowy XX wieku najpierw w układach kardanowych, a następnie w układach bezkardanowych orientacji przestrzennej. Pokazano modyfikacje tej metody pozwalające na zwiększenie dokładności pomiaru. Zaprezentowano również metodę inercjalną bezgiroskopową, która jest ciekawą propozycją rozwoju inercjalnych metod określenia kierunku północnego.

EN

In the article north finding methods based on inertial measurements are presented. The idea of gyrocompass is described, as at the beginning of 20th century this instrument revolutionised procedures of course angle measurement on ships. The gyrocompassing procedure is presented - it was used during first half of 20th century, primarily in cardan and then in strapdown inertial attitude measuring systems. Modifications of this method, aimed at improving measurement accuracy, are discussed. The nongyroscopic inertial method is also considered, as an interesting proposition for the development of inertial north finding methods.

6

Pipes coupling made of shape memory alloy used as an aircraft equipment

Sukhochev P.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

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2001

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nr 12

135-138

EN

Pipe couplings made of shape memory alloy, being the threadless thermo-mechanical couplings, previously provided for pressurized reliable pipes junction at aircraft hydro-gas systems assembling and repairing, also applied in others industries, are presented.