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Analysis of the Sailplane Final Approaches Performed by Cosine-Law Speed Variations
(Strojniski Vestnik/Journal of Mechanical Engineering, 2010)
High lift-to-drag ratios of the contemporary sailplanes make them the most energy efficient flying vehicles. On the other hand, this capability may become their serious disadvantage during the landing, if their aerodynamic ...
Theoretical-experimental determining of cooling time (t8/5) in hard facing of steels for forging dies
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2010)
This paper investigates the accuracy of analytical, empirical, and numerical expressions, i. e. the most favourable methods for calculating the cooling time from 800 to 500°C (t8/5). The degree of accuracy of time t8/5 is ...
Parameter sensitivity analysis of non-dimensional models of quayside container cranes
(Taylor & Francis Inc, Philadelphia, 2010)
This paper gives an analysis of dynamic behaviour of the waterside boom, previously identified as the most important structural part of the mega quayside container cranes (QCC) under moving concentrated mass. The non-dimensional ...
Energetic analysis of hard facing and weld cladding of an air powered drop hammer damaged ram
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2010)
This paper studies problems of hard facing of damaged and initially cracked mechanical engineering heavy parts of complex geometry such as large rams of air powered drop hammers. During long-term exploitation, these parts ...
Optimisation of the deposition parameters of thick atmospheric plasma spray coatings
(Journal of the Balkan Tribological Association, 2012)
Plasma spray process is one of the most versatile thermal spray deposition processes. There are great number of parameters that influence the quality and characteristic of deposited coating and their values must be defined ...
Measurement of local deformation fields in dental composites using 3d optical system
(Chemicke Listy, 2011)
Polymerization shrinkage is the single most important local deformation of dental composites that has a substantial effect on the quality of the tooth-restoration interface in clinical conditions. The aim of this study was ...
Wear of timing belt drives
(Journal of the Balkan Tribological Association, 2011)
The timing belt drives are synchronous drives that transmit power and motion via side surfaces of belt teeth and, partially, through friction between belt teeth and belt pulley teeth. Failure of the timing belt drives ...
Nox and SO2 emission factors for Serbian lignite Kolubara
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2012)
Emission factors are widely accepted tool for estimation of various pollutants emissions in USA and EU. Validity of emission factors is strongly related to experimental data on which they are based. This paper is a result ...
On the brachistochronic motion of mechanical systems with unilateral constraints
(Pergamon-Elsevier Science Ltd, Oxford, 2012)
The problem of brachistochronic motion of a two-degree of freedom mechanical system is considered. The ideal bilateral constraints and one unilateral constraint with Coulomb friction are imposed on the system. It has been ...
Biomass gasification with preheated air: Energy and exergy analysis
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2012)
Due to the irreversibilities that occur during biomass gasification, gasifiers are usually the least efficient units in the systems for production of heat, electricity, or other biofuels. Internal thermal energy exchange ...