Solar and Gas Powered Long-Endurance Unmanned Aircraft Sizing via Geometric Programming

Model Development for a Comparison of VTOL and STOL Electric Aircraft Using Geometric Programming

“…The fuselage is modeled as an elliptical body, with a weight specified by a minimum gauge of carbon fiber layup and drag based on fineness ratio and wetted area. The details of this fuselage model are described in [27]. In both cases, fuselage primary structure to transfer load from the landing gear to the wing is not accounted for.…”

Feasibility Study of Short Takeoff and Landing Urban Air Mobility Vehicles using Geometric Programming

“…Because it is convex, even GPs with thousands of variables can be solved quickly [31]. Additionally, recent research has shown that GPs can be used to e↵ectively evaulate aircraft design trade spaces [32] [33].…”

“…This wing sizing model leverages the GP wing sizing model used by Burton and Hoburg. [32] A simple drag model is used for the aircraft cruise performance,…”

An Examination into the Defining Characteristics of Flexible Solar Aircraft Configurations through Optimization

“…Despite its importance, there seems to be no consensus regarding what configuration solar aircraft should have among researchers and companies. Among the designs that researchers have investigated are braced wing [1], blended wing body [2], unswept flying wing [3,4], swept flying wing [5], and conventional aircraft configurations with varying numbers of tails [6][7][8]. Among the designs which have been or are currently being pursued by various companies are unswept flying aircraft (AeroVironment's Helios and Hawk30), swept flying wing aircraft (Facebook's Aquila), configurations with varying numbers of tails (Airbus's Zephyr and Aurora's Odysseus), and reconfigurable configurations made up of multiple independent sections (Aurora's Vulture).…”