In this paper the basic research problems associated with modelling the basic stealth features for a small navy ship at the concept design stage are introduced. Amongst the major stealth features considered are: the modification of the immersed ship hull form by a rapid change of the ship loading condition, and modification of the ship boundary layer by the hull skin cover. The other stealth features of the ship are not presented in this paper as they do not refer to the ship hydromechanics. The research method is based on the navy ship risk assessment and assessment of the ship performance. The risk may be estimated according to a proposed risk model. The risk assessment may be done according to the risk matrix criteria. The ship performance assessment is based on modification of the immersed ship hull form and modification of the ship boundary layer. Some elements of the research method and mathematical model for estimating the ship performance are introduced in the paper. In general, the research is associated with the interdisciplinary investigations and multi-criteria ship design. The problems presented in the paper follow the Ph.D. research conducted at the Faculty of Ocean Engineering and Ship Technology at Gdańsk University of Technology.
Stealth technology continuous to grow in significance with the development of radars and an ever changing battlefield. Nowadays, not only aircraft, but other types of units like helicopters, ships, land vehicles, submarines and missiles are constructed with low-observable technology. This paper covers the most important methods of making objects less visible and less-detectable. The paper will give a short description of radar, infrared, visual, sonar (acoustic), and plasma. Radar absorbing materials, the most researched element of stealth technology, still present enormous potential. Authors of the paper presented a magnetorheological elastomer as a future material in the stealth technology.
PL
Znaczenie technologii stealth ciągle rośnie wraz z rozwojem radarów i zmieniającym się polem bitwy. W dzisiejszych czasach nie tylko samoloty, ale inne jednostki takie jak: śmigłowce, statki, pojazdy lądowe, łodzie podwodne i rakiety są zbudowane z myślą o niskie wykrywalności. Praca ta obejmuje najważniejsze sposoby wytwarzania obiektów mało wykrywalnych. W skrócie przedstawiono opis radaru, podczerwieni, techniki wizualnej, akustycznej (sonar) i plazmy. Materiały pochłaniające fale radarowe, wymagają ciągłych badań. Autorzy pracy przedstawiają elastomer magnetoreologiczny jako materiał w przyszłościowym zastosowaniu w technologii stealth.
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