Conceptual design and manufacturing of a flight vehicle with coaxial double-layer counter rotating disk wing

In this paper we propose the design concept and development plan for a novel flight vehicle to accommodate air traffic to Taiwan's special geographic environment with numerous islands and mountains. The main characteristic of the proposed flight vehicle is to combinc the advantages of rotary wing and fixed wing such that it can take off vertically as a helicopter hybrid aircraft is the mechanic design of the coaxial double-layer disk wing with extending blades. This paper comprises two parts. Part I considers the conceptual design of the hybrid aircraft, including (1) estimation of external sizing, (2) hybrid flight function design, (3) feasibility study, (4) analysis of flight performance, (5) mechanic design of coaxial double-layer counter-rotating disk wing with extending blades. According to the conceptual design in Part I, we actually manufacture a remote-control model in Part II, and a series of flight tests is conducted to verify the feasibility of the proposed hybrid aircraft.