NASA concept vehicles and the engineering of advanced air mobility aircraft

W Johnson, C Silva - The Aeronautical Journal, 2022 - cambridge.org
NASA is conducting investigations in Advanced Air Mobility (AAM) aircraft and operations.
AAM missions are characterised by ranges below 300 nm, including rural and urban …

Current capabilities and challenges of NDARC and SUAVE for eVTOL aircraft design and analysis

JM Vegh, E Botero, M Clark, J Smart… - 2019 AIAA/IEEE …, 2019 - ieeexplore.ieee.org
This paper compares and contrasts the application of two conceptual methods for the design
and analysis of eVTOL aircraft. The starting point is a widely publicized reference design, the …

[HTML][HTML] Fast level-flight to hover mode transition and altitude control in tiltrotor's landing operation

LIU Ningjun, CAI Zhihao, W Yingxun, Z Jiang - Chinese Journal of …, 2021 - Elsevier
An attempt is made to implement a faster level-flight to hover mode transition in tiltrotor's
landing process for the purpose of shortening its landing time. A three-stage tiltrotor landing …

Practical conceptual design of quieter urban VTOL aircraft

C Silva, W Johnson - Vertical Flight Society's 77th Annual Forum & …, 2021 - ntrs.nasa.gov
A toolchain and process for conceptual design of VTOL rotorcraft, employing low-and mid-
fidelity tools is presented. The approach is capable of providing more quantitatively-credible …

A comparison of three conceptual design approaches applied to an electric distributed lift aircraft

JM Vegh, PM Basset, N Beals, R Scott, R Perret… - CEAS Aeronautical …, 2024 - Springer
This paper serves as an introduction to a collaborative effort between the US Army US Army
Combat Capabilities Development Command (DEVCOM) Aviation and Missile Center …

Effect of Rotor Blade Elasticity on UAM Quadrotor Acoustics

S Kottapalli, C Silva, DD Boyd - … Flight Society's 79th Annual Forum & …, 2023 - ntrs.nasa.gov
The 6-passenger quadrotor concept vehicle designed under the NASA Revolutionary
Vertical Lift Technology (RVLT) Project is considered for acoustic analysis. The tip speed is …

Sustainable Design of Electric Vertical Take-Off and Landing Aircraft for Urban Air Mobility

N André - 2022 - mediatum.ub.tum.de
The thesis assesses the environmental impact of electric vertical take-off and landing
(eVTOL) aircraft. It develops a methodology for the integrated conceptual design and life …

Evaluation of aerial vehicle configurations for high-range Mars missions

V Zappek, M Rinker, L Daxer, M Hajek - CEAS Space Journal, 2023 - Springer
As part of an envisioned autonomous swarm exploration mission in Valles Marineris on
Mars a design investigation of a high-range scout UAV is performed in this work. Two VTOL …

Prediction of Quadrotor Acoustics Using RVLT Toolchain

S Kottapalli, C Silva - … for Advanced Vertical Flight Technical Meeting …, 2022 - ntrs.nasa.gov
The NASA Revolutionary Vertical Lift Technology (RVLT) Project toolchain is used to predict
the acoustics of the NASA 6-passenger quadrotor concept vehicle. A qualitative study of the …

Mission performance of different landing gear types in medium-sized twin engine helicopters

V Zappek, I Yavrucuk - CEAS Aeronautical Journal, 2024 - Springer
Retractable wheeled landing gears (RWLG) are standard equipment on most large
helicopters above 6 tons. They offer better aerodynamics in cruise, improved passenger …