Quad-Rotor Unmanned Helicopter Designs
Journal Title: ASIAN JOURNAL OF NATURAL & APPLIED SCIENCES - Year 2014, Vol 3, Issue 3
Abstract
The quad-rotor unmanned helicopter design has superior capabilities in comparison to any other configuration because four rotors is the minimum number that assures attitude management without the need for control surfaces or tilt rotor mechanisms. Quad-rotors have drawbacks too, but the simplicity of their design and the low costs for obtaining and maintenance of such a helicopter make them most ubiquitous among multi-rotor aircraft. Starting from the four rotor paradigm authors have developed innovative designs of quad-rotor unmanned helicopters that have further benefits from the current designs and although unable to offer the safety of helicopters with larger number of propellers they present novel features and give researches and users new flying platform for their projects and activities.
Authors and Affiliations
Petar Getsov, Svetoslav Zabunov, Garo Mardirossian
Survey of Work- Related Stress in Medical Students in Iran
Stress is the second most frequently reported work-related health problems after musculoskeletal diseases, affecting 22% of workers in the European Union (EU). Work-related stress is one of the major causes of occupation...
A Comparison of Concepts between Native Xml and Relational Database Systems
The way information is exchanged and combined is dramatically affected by the growth of XML and the Internet. XML changes the way databases are used, even the database vendors did not predict these changes a few years ag...
INVESTIGATION OF DIELECTRIC AND PYRO-ELECTRIC PROPERTIES OF AZO DYE (CHR): PVA COMPOSITE.
In this article, we present the thermally stimulated depolarization currents (TSDC), dielectric properties and pyro- electric investigations of electrically poled azo dye (chromotrope -2R (CHR) dop...
GENERAL GUIDANCE FOR THE DESIGN, FABRICATION AND INSTALLATION OF JACK-UP PLATFORMS
Variety of offshore structures are fabricated worldwide in order to be used in a variety of water depths, environments and for a variety of functions. Jack-up platforms were fabricated since the middle of 20 centuries, a...
GENERAL GUIDANCE FOR DESIGN AND CONSTRUCTION OF GRAVITY PLATFORMS
Among the different types of offshore platforms which are mainly categorized according to waterdepth of the installation location, the gravity platforms have different type of construction and installation. The platforms...