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11 - Supersonic parachutes Lingard.pdf

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Design guide 3<br />

longer suspension lines (at least 2D 2D00)<br />

) improve the<br />

performance of all parachute designs at supersonic<br />

speeds<br />

drag performance with increasing Mach number is improved<br />

inflation stability is markedly better<br />

ribbon flutter is substantially reduced<br />

the onset of pulsation delayed<br />

structural loads imposed during operation in<br />

supersonic flow are greater than those seen at<br />

equivalent dynamic pressures in subsonic flow<br />

ribbon flutter and canopy shape changes<br />

increased design margins are needed<br />

careful detailed design, particularly in the skirt region, is<br />

important

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