Sivil Havacılık Araştırma ve Uygulama Merkezi
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Flame-retardant effects of cyclic phosphonate with HALS and fumed silica in polypropylene
(Wiley, 2019)In this study, an N-alkoxy-hindered amine-based UV stabilizing agent (NOR-116) and nanosized silica particles (Aerosil R-972) were combined with a cyclic phosphonate based-flame retardant (FR; PCO-900) and incorporated ... -
Energy, exergy analysis, and sustainability assessment of different engine powers for helicopter engines
(Taylor & Francis Inc, 2017)The rapid decrease of energy resources has accelerated studies on energy efficiency. Energy efficiency refers to the effective use of energy, in other words, completing a specific task to the required standard by using ... -
Effect of polyamide ratio on the flammability of wool/PA blended aircraft seat fabrics
(IOP Publishing LTD, 2018)Wool and polyamide blended fabrics are widely preferred for aircraft seats. Due to the requirements of the flammability regulations of airline authorities, aircraft fabrics have to pass vertical flammability and smoke ... -
Sustainability assessment in piston-prop helicopter engine
(Springer International Publishing, 2016)About 75% of the world’s energy requirement is provided by fossil fuels, and there are various improvement efforts in all fields to ensure the effective use of available sources, taking into consideration the gradual ... -
Exergetic Destruction Effects Of Operating Conditions On The Turbojet Engine Components
(Trans Tech Publications LTD, 2012)The minimization of exergy destruction brings the design as closely as permissible to the theoretical limit. This study presents exergy destruction analysis of a turbojet engine for different flight Mach number and altitudes. ... -
Exergetic and Energetic Response Surfaces for Small Turbojet Engine
(Trans Tech Publications LTD, 2012)Exergy analysis permits meaningful efficiencies to be evaluated for a system or process, and the sources, causes and locations of thermodynamic losses to be determined. This study presents exergetic modeling of a small ... -
On the Dynamic Stability of a Rocket Under Constant Thrust
(IEEE, 2015)Dynamic stability of a free flight aerospace vehicle is investigated in this paper. Firstly, the slender rocket body is modeled as a classic uniform beam that subjected to constant end rocket thrust. The one-dimensional ... -
Dynamic instability of spinning launch vehicles modeled as thin-walled composite beams
(Springer Wien, 2017)This paper presents the results of the dynamic stability analysis of a flexible spinning launch vehicle subjected to thrust modeled as a thin-walled composite beam with circular cross section. Due to the presence of ... -
Model and Control Problem for Space Vehicles with Propellant Slosh
(IEEE, 2015)This paper contains calculations about propellant slosh for an upper stage rocket. The liquid fuel is modeled by using an equivalent mechanical model, from this point of view the stability of this rocket is examined by ...
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