Civilian long endurance UAV – design challenges

This paper presents a selected aspect of design activity devoted to optimising HALE and MALE UAVs. The project is taking place at Warsaw University of Technology under the V Framework of European Union in the CAPECON project. This paper deals with wing airfoil selection, defining of the configuration layout and power unit integration. A brief overview of wing sections developed in some design centres (mainly in Israel Aircraft Industry and in Northrop Grumman) is included. Aircraft layout depends on the mission and sensor selection and is discussed using the examples of PW‐103 and PW‐114. Engine suspension and integration with aircraft is included in the analysis because if it is not properly analysed, it can lead to an excessive vibration and fatigue of the whole aircraft structure. First Published Online: 14 Oct 201

The Use of Drones in Agricultural Production

The drones called as mainly unmanned aerial vehicles (UAVs) have been commonly used recently in agricultural production in all part of the world because of reducing costs of hardware and the software technology as well as tremendous progresses. Moreover, UAVs gave opportunities such as reaching much faster and efficient in emergency situations, allowing access to places which humans cant reach etc. Therefore, UAVs are used in many part of our life not only for agriculture both also traffic surveillance, military operations, disaster management, border-patrolling, aerial image georeferencing, courier services, firefighting as well as monitoring of wildlife, nature, sky life etc. In the agriculture, the UAVs are used mostly for monitoring the crop production using spectral imaging on each period of time in order to identify the problems on the field such as water shortage and diseases, tracking animals using cameras and herding them with creating sounds produced by the UAVs, spraying to the field with pesticide, fungicide and water by equipping spraying kit on a UAV, generating the strong winds by the propellers of the UAV increasing pollination in the hybrid plant production as well as separating the small harmful bugs from the plants etc. The UAVs contribute a lot more to the agricultural sector, if the right implementations and researches are done. However, using new implemented lightweight materials to increase the endurance of the UAV, developing new type of lenses and sensors which can identify other diseases on plants or animals which cant be seen by the current equipment and equipping a granule spreader on a UAV so that it can distribute the seeds on the field much faster than a tractor

Security analysis of uav radio communication system

This paper presents analyzed questions of the safety of the information transferred by the radio connection link of the Polish UAV project “Aircraft for monitoring” SAMONIT. This safety is especially important for the design and use of unmanned aerial vehicles (UAV). This paper also presents the structure of the SAMONIT communication system, security threats to the radio connection system, and possible measures to ensure secure information. Santrauka Straipsnyje nagrinejami Lenkijos bepiločiu orlaiviu projekto SAMONIT (monitoringo lektuvas) radijo ryšiu perduodamos informacijos saugumo klausimai. Ypač svarbi yra radijo ryšiu perduodamos informacijos apsauga kuriant bepiločius orlaivius (BO) ir kitas nuotolinio valdymo transporto priemones. Straipsnyje pateikiama SAMONIT ryšiu sistemos struktūra, galimos gresmes informacijos perdavimui, saugumui bei integralumui; taip pat radijo ryšio sistemos apsaugos būdai bei priemones. First Publish Online: 14 Oct 2010 Reikšminiai žodžiai: bepilotis orlaivis, BO, saugumas, radijo ryšio sistema

A short history of seminars on "recent research and design progress in aeronautical engineering and its influence on education"

The aeronautical sciences and aerospace industry are by nature international. Coming from this thesis, we decided in 1994 to organise an international meeting, further called the Seminar, devoted to “RECENT RESEARCH AND DESIGN PROGRESS IN AERONAUTICAL ENGINEERING AND ITS INFLUENCE ON EDUCATION”. The objective of that first Seminar and following ones was to organise a multinational forum for discussion and interchange of aeronautical issues and subjects, focusing on their influence on university education. Other goals included promoting international co-operation in the study of the problems in aeronautical science and technology in which there was a common interest and facilitating personal contacts between scientists, university lecturers, and industrial engineers. Our area of interest was aeronautical technology, as it is widely understood. The special focus of our Seminars was concentrated on Aircraft Design, Aircraft Oriented Aerodynamics, Flight Dynamics, Helicopter Dynamics, Computational Fluid Dynamics, Materials and Structures, Control and Flight Tests. All these topics and their influence on the teaching process at a technical university were considered — what we believe is a specific feature of our Seminars. We notice a mutual influence between contemporary research and education; it is impossible to deliver a modern university lecture without conducting one’s own serious research or design, and it is almost impossible to become a serious, successful researcher or designer without being a graduate of a good, contemporary university. The other specific feature of our Seminars is a student session. An international jury of professors and deans from aerospace faculties all over the world observes the sessions and awarded the best student papers diplomas (sometimes with small prizes contributed by different institutions). We believe that the student sessions promote personal contacts between students and foreign lecturers and encourage students to work harder in the future. For all of us, it is the promise of a new generation of engineers, designers and scientists. First published online: 14 Oct 201

UCAV PW‐124 – a design effort undertaken at Warsaw University of Technology

This paper presents a conceptual design project developed at the Warsaw University of Technology and focused on an unmanned aerial vehicle being able to fly at low and medium altitude, with a special emphasis put on selecting the platform best suited for the planned mission. Design and research activity necessary to complete the project successfully is based on the international experience gained by the university team within a number of the past very successful projects, mainly projects supported by European Union within the V and VI scientific frameworks. The project deals with a highly maneuverable unmanned aerial vehicle of low gust sensitivity and reduced radar, infrared, and acoustic signature. Aircraft mission, power unit, aerodynamics and many design details are shown and discussed. First Published Online: 14 Oct 201

Design and Optimisation of Fuel Tanks for BWB Configurations

This paper describes assumptions, goals, methods, results and conclusions related to fuel tank arrangement of a flying wing passenger airplane configuration. A short overview of various fuel tank systems in use today of different types of aircraft is treated as a starting point for designing a fuel tank system to be used on very large passenger airplanes. These systems may be used to move fuel around the aircraft to keep the centre of gravity within acceptable limits, to maintain pitch and lateral balance and stability. With increasing aircraft speed, the centre of lift moves aft, and for trimming the elevator or trimmer must be used thereby increasing aircraft drag. To avoid this, the centre of gravity can be shifted by pumping fuel from forward to aft tanks. The lesson learnt from this is applied to minimise trim drag by moving the fuel along the airplane. Such a task can be done within coming days if we know the minimum drag versus CG position and weight value. The main part of the paper is devoted to wing bending moment distribution. A number of arrangements of fuel in airplane tanks are investigated and a scenario of refuelling - minimising the root bending moments - is presented. These results were obtained under the assumption that aircraft is in long range flight (14 hours), CL is constant and equal to 0.279, Specific Fuel Consumption is also constant and that overall fuel consumption is equal to 20 tons per 1 hour. It was found that the average stress level in wing structure is lower if refuelling starts from fuel tanks located closer to longitudinal plane of symmetry. It can influence the rate of fatigue

Bepiločių orlaivių radijo ryšio sistemos analizė

This paper presents analyzed questions of the safety of the information transferred by the radio connection link of the Polish UAV project “Aircraft for monitoring” SAMONIT. This safety is especially important for the design and use of unmanned aerial vehicles (UAV). This paper also presents the structure of the SAMONIT communication system, security threats to the radio connection system, and possible measures to ensure secure information.Lietuviška santrauka. Straipsnyje nagrinėjami Lenkijos bepiločių orlaivių projekto SAMONIT (monitoringo lėktuvas) radijo ryšių perduodamos informacijos saugumo klausimai. Ypač svarbi yra radijo ryšių perduodamos informacijos apsauga kuriant bepiločius orlaivius (BO) ir kitas nuotolinio valdymo transporto priemones. Straipsnyje pateikiama SAMONIT ryšių sistemos struktūra, galimos grėsmės informacijos perdavimui, saugumui bei integralumui; taip pat radijo ryšio sistemos apsaugos būdai bei priemonės