Ballistic parameter plays a major role in determining the re-entry *** ballistic coefficient offers an optimal re-entry,wherein the vehicle decelerates higher up in the atmosphere thereby decreasing the imposed aeroth...
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Ballistic parameter plays a major role in determining the re-entry *** ballistic coefficient offers an optimal re-entry,wherein the vehicle decelerates higher up in the atmosphere thereby decreasing the imposed aerothermal *** current computational study proposes an add-on,to the existing Orion-based re-entry vehicle:a duct circumventing the capsule from the shoulder to the base,to improve the aerocapture ability of the re-entry *** design cases are categorised based on a non-dimensional parameter termed the Annular Area Ratio(AAR).Dragand ballistic coefficient of the Ducted Re-entry Vehicles(DRVs)at various Mach numbers are evaluated and compared with those of the baseline *** results show that the proposed design increases the drag for all the AARs considered in the subsonic *** the supersonic regime,ducted models of higher AAR are more promising with the increase in Mach *** also exhibit lower ballistic coefficients than their baseline counterparts.
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