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HELICOPTERS
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NASA: On-Demand Mobility (ODM) Overview - Transformative Vertical Flight for Urban Mobility Panel
Advances in Rotorcraft Crashworthiness - Trends Leading to Improved Survivability
Civil and parapublic helicopter : the concise global industry guide ; annual handbook ; 15.2017
AHS International’s Igor I. Sikorsky: 24 Hour Hover Challenge
5th Asian/Australian Rotorcraft Forum : Singapore, 17-18 November 2016
XV-24A LightningStrike: "A New Species in the Taxonomy of Vertical Flight"