Concerning the feasibility of a future supersonic fleet, current market forecasts see a 60% chance of any launch of a supersonic business jet program in the next 8 years, and an 85% chance by 2020. Furthermore, different European projects like HISAC (www.hisacproject.com) or LAPCAT (www.esa.int/techresources/lapcat) deal with the development of supersonic aircraft. Airbus spent a lot of effort ...

Even during the current biodiversity crisis, reports on population collapses of highly abundant, non-harvested marine species were rare until very recently. This is starting to change, especially at the warm edge of species' distributions where populations are more vulnerable to stress. The Levant basin is the southeastern edge of distribution of most Mediterranean species. Coastal water condit...

Pontryagin's principle is used to study the shape of the supersonic part of the nozzle of a carbon dioxide gas-dynamic laser whose gain is maximal. The exact shape is obtained for the uncoupled approximation of Anderson's bimodal model. In this case, if sharp corners are allowed, the ceiling of the supersonic part consists of a slant rectangular sheet followed by a horizontal one; otherwise...

The results of research work on the application coatings designed to protect working surfaces machine parts and mechanisms operating under conditions hydroabrasive cavitation wear are presented. Coatings were produced by supersonic atmospheric plasma spraying powder materials using air as a gas. experimental list was chosen taking into account experience authors in protecting details propulsion...

This paper presents results of a parametric study performed on an automotive air-conditioning (AAC) system of a passenger car. The goals are to assess the effects of varying the volumetric flow rate of supply air, number of occupants, vehicle speed, and the fractional ventilation air intake (XOA), on the dry-bulb temperature and specific humidity of the air inside the passenger’s cabin, and on ...

1. Summary Alternative configurations for more efficient supersonic aircraft are suggested by consideration of the sources of drag at high speeds. Results of studies described in this paper indicate that supersonic aircraft with much higher efficiencies than previously achieved are possible with reduced Mach number. The paper focuses on two promising candidate solutions: oblique wings and confi...

This paper discusses the design optimization of a wing for supersonic transport (SST) using a multiple-objective genetic algorithm (MOGA). Three objective functions are used to minimize the drag for supersonic cruise, the drag for transonic cruise, and the bending moment at the wing root for supersonic cruise. The wing shape is defined by 66 design variables. A Euler flow code is used to evalua...