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<rdf:Description rdf:about="https://archives.ucl.ac.uk:443/CalmView/record/catalog/LIGHTHILL/N/1-47/19-41/21" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter from D. Beastall, National Aeronautical Establishment, Bedford, 26 January 1953</dc:title>
  <dc:description>Letter encloses a Schlieren photograph of the wake from a small aerofoil striking the lip of a cowl and causing a slight oscillation of the detached shock ahead of the cowl and for comparison a photograph where the wake misses the cowl'.</dc:description>
  <dc:date>26 Jan 1953</dc:date>
</rdf:Description>