Stability Analysis for a Concept Design of Vertical Take-off and Landing (VTOL) Unmanned Aerial Vehicle (UAV)

UAV Trajectory Optimisation in Smart Cities Using Modified A* Algorithm Combined With Haversine and Vincenty Formulas

“…Moreover, hydrogen is the only fuel that could enable vertical take-off. Thus, according to Urban Aeronautics' founder, it will be the only viable way to allow the low-orbit hovering framework [28]. Alternatively, researchers exploit ways to reduce transportation energy consumption for ground vehicles.…”

“…Where 𝜆0 is the initial value of 𝜆. Hence, after the required iterations, we compute ( 14) -( 16) and (20), from which we can calculate the azimuths 𝑎1, 𝑎2 and the connecting geodesic 𝑠 using ( 26) - (28). For ( 27) and ( 28) the comma separates the cartographical coordinates as we calculate the cartographical azimuth, also called grid azimuth.…”

Archive of Mechanical Engineering

“…This paper is part of the series of the current [18][19][20][21][22][23] and future studies under the ERDF (European Regional Development Fund) project, which aims at developing educational/research purpose high-speed flow testing facilities and aerospace equipment at Riga Technical University, Latvia. The findings and methods learned during this work will be utilized in the mechanical design and structural testing of the sensitive parts and equipment, especially for the compression system of the wind tunnel.…”