An unmanned aerial vehicle (UAV) as an alternative to manned aircrafts is excellent, less invasive, safe tool, especially in sensitive polar regions. Here we used a fixed-wing UAV collect data on seabird and pinniped populations hardly accessible Antarctic areas. The implementation of auto-piloted equipped with digital camera (Canon EOS 700D, 35 mm f/2.0 lens) allowed us high-quality material applicable quantitative analysis the fauna populations. A successful photogrammetric mission, at...

Abstract Recent developments in unmanned aerial vehicles (UAVs) have resulted high-resolution digital elevation models (DEMs) of vulnerable coastal environments, including beach–foredune topography. If performed repetitively, they can offer an excellent tool to determine the spatial and temporal changes sediment budget, which may be required for proper land management. However, quality a UAV, slope parameters, vegetation significantly influence DEM accuracy. The aim this study is compare...

The history of UAVs is relatively long and many such vehicles are in service for different tasks. They can be used even environments inhospitable humans, e.g. because extreme temperature. Moreover, they perform a task that difficult or impossible manned aircraft its size usually high airspeed. photogrammetric tasks belong to this group, especially if we need take high-resolution pictures during low level flight. advantages small UAV mission more evident want investigate the natural...

The aim of this article is to show geomorphological mapping remote Antarctic locations using images taken by a fixed-wing unmanned aerial vehicle (UAV) during the Beyond Visual Line Sight (BVLOS) operations. We mapped landform assemblages developed in forelands Ecology Glacier (EGF), Sphinx (SGF) and Baranowski (BGF) Specially Protected Area No. 128 (ASPA 128) on King George Island (South Shetland Islands) inferred about glacial dynamics. orthophoto digital elevation model allowed for...

Abstract. A program to monitor bird and pinniped species in the vicinity of Arctowski Station, King George Island, South Shetlands, Antarctica, has been conducted over past 38 years. Annual monitoring these indicator includes estimations breeding population sizes three Pygoscelis penguin species: Adélie, gentoo chinstrap. Six colonies situated on western shores two bays: Admiralty are investigated. To study changes populations Unmanned Aerial Vehicles were used for first time 2014/15 austral...

Purpose The purpose of this paper is to present a study on methods for load spectrum (LS) determination and extrapolation, basing data obtained from experiments. Design/methodology/approach A sequence loads registered in flight becomes an object analysis aimed calculate full cycles loads, basis two possible types LS are determined, i.e. as the transfer array, or classic form (as plot presenting appearances increments, called “incremental spectrum”). While use incremental enables just...

The tailless fixed-wing aircraft have a very compact design and therefore are attractive as portable unmanned aerial vehicle (UAV) platforms. There is special need for using such platforms in case of operations backlands Antarctica, because often the equipment necessary preparing improvised airfields near Antarctic scientific bases organizing UAV flights must be hand-carried. main aim this paper to present activity testing number configurations used monitoring areas collecting data local...

Abstract The article presents the analyses of flights carried out by Unmanned Aerial Vehicle (UAV) named PW-ZOOM used to perform a photogrammetric mission and monitoring fauna in Antarctic areas. focus on deviations optical axis photo-camera which occurred during same route but several expeditions performed subsequent years (2014 2015). results were subjected correlation tests with weather conditions (wind speed variability). basis for these are data from onboard signal recorder integrated...

Abstract The paper contains a description of novel approach to the load spectra estimation applied UAVs. authors have developed number tools in LabVIEW environment enabling an in-depth analysis flight-log data. One major achievement was separation induced by steering and turbulence. shown significant influence both main sources on fatigue life UAV airframe, calculated based P-M hypothesis. This testing composite airframes needs take into account rate variations as these may affect tested...

Purpose The purpose of this paper is to present a study on effective methods for fatigue evaluation composite structures. Design/methodology/approach Based topological correspondence between half‐cycle arrays and the Haig diagrams, data structure in form array containing numbers half‐cycles failure (or unitary damage array) are obtained. Such forms facilitate significantly calculation produced by any load spectrum (LS), presented as array. Findings loads highest increments inside operational...

Investigations Into Glider Chassis Load SpectrumThe paper describes investigations on load spectrum of a glider chassis during take-off and landing. The experiments were conducted different kinds airfield surfaces, recorded time-courses loads acting the main front gear used for analysis. shortly tests carried out PW-6 (description measurement system installed landing gear). There is included comparison methods analysis full cycle counting. following used: local extremes count method, level...

The authors describe the program undertaken at Warsaw University of Technology (WUT), aimed developing mobile aerodynamic laboratories to be used for investigation into properties airfoils or lightweight propulsion systems -in natural scale and in atmosphere.The enterprise was named EB-program, has both: research educational aspects; all phases (i.e.design, manufacturing testing) WUT students are involved.As result work, three were build: EB-1 -which tested on car roof, EB-2 -unique flying...

The work concerns the research of a propulsion system for an unmanned aerial vehicle MOSUPS in joined wing configuration. Modeling, analysis and experimental statically unbalanced rotor ducted fan has been conducted.The aim was to determine critical rotational speeds due probable excitation oscillations. Due complex geometry, Finite Element Method used calculations. In study, frequencies (and also speeds) as well precessional instability, flexibly mounted bearings have calculated. Campbell...

Investigation into Fatigue Behaviour of Metal-Composite Glue Connection The paper presents the results experimental investigations fatigue properties metal and CFRP-composite glued joints. object investigation was adhesive joints between sheets made from iron alloy 30HGS (popular steel in Polish aviation industry) CFRP orthogonal reinforced 10 layers SIGRATEX CE3208 pre-preg. main WK-3 glue (applied form 0.2 mm thin foil) while DP-490 - liquid epoxy used as technological aid for specimen...

The article focuses on the load spectrum of a lightweight unmanned aircraft. It examines impact signal sampling frequency derived from signal. flight sessions followed two scenarios: maneuvering causing wide range factor variations and calm photogrammetric flight. recorded signals types sensors were initially rescaled into time series, with an optional smoothing process. These series then downsampled by selecting every nth term, resulting in sequences at lower frequency. Next, all...

Abstract The paper concerns an application of lightness factors in comparative analysis strength properties basic materials being applied aeronautical structures – a historical perspective. use enables effective estimation how lighter will be the structural elements (of same or stiffness) made from different kind : traditional as well advanced composites. It is quite easy to find solution inverse problem, i.e. estimate differ stiffness for mass elements. Very particular are noted engineers...