Please use this identifier to cite or link to this item: http://arks.princeton.edu/ark:/88435/dsp013j3334703
 Title: Cowling and Propeller System Capable of Transitioning from Vertical to Horizontal Thrust Authors: Jerpbak, SkyeMacDonald, Karen Advisors: Martinelli, Luigi Department: Mechanical and Aerospace Engineering Class Year: 2016 Abstract: A propeller and cowling system was designed and manufactured to be able to transition from vertical lift to horizontal thrust. In ﬁxed-wing aircraft, this system would allow for vertical takeoﬀ in addition to normal horizontal ﬂight. For multi-rotor drone applications, a system like this would complement its existing vertical takeoﬀ capabilities by allowing the aircraft to have a larger range and traverse distances more quickly. The cowling was 3D printed and integrated into a system that included motors and electronic components capable of controlling the propeller speed and cowling angle. A stand was designed to hold the cowling and measure the vertical and horizontal force components independently. Strain gauges and instrumentation ampliﬁers were used to do this. The transition from vertical lift to horizontal thrust was then tested at multiple propeller speeds. The results show that as the cowling rotates from its vertical orientation to its horizontal orientation, the lift force decreases linearly and the thrust force increases linearly. This report details the mechanical design considerations for manufacturing the cowling and stand, as well as providing details regarding the system’s overall assembly, testing and results. Extent: 53 pages URI: http://arks.princeton.edu/ark:/88435/dsp013j3334703 Type of Material: Princeton University Senior Theses Language: en_US Appears in Collections: Mechanical and Aerospace Engineering, 1924-2016

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