Results 31 to 40 of about 34,916 (185)

Feasibility Study of Short Takeoff and Landing Urban Air Mobility Vehicles Using Geometric Programming [PDF]

, 2018
Electric Short Takeoff and Landing (eSTOL) vehicles are proposed as a path towards implementing an Urban Air Mobility (UAM) network that reduces critical vehicle certification risks and offers advantages in vehicle performance compared to the widely ...
Antcliff K. R., ASTM, Borer N. K., Burton M., County, Deere K. A., Drela M., Drela M., Federal Aviation Administration, Harish A., Howard C. E., Justin C. Y., Kokam, Kreimeier M., Kurtz D. W., Mass GIS, McCormick B. W., National Aeronautics and Space Administration, Patterson M. D., Perry D., Raymer D. P., Roe M. H., Seeley B. A., Siegel D., Stoll A. M., Stoll A. M., Uber, Vascik P. D., Warren Hoburg P. K.   +28 more
core   +1 more source

Parametric Research and Aerodynamic Characteristic of a Two-Stage Transonic Compressor for a Turbine Based Combined Cycle Engine

Aerospace, 2022
This paper researches the parametric optimization of a two-stage transonic compressor having a large air bypass at partial rotating speed according to flow analysis for a turbine-based combined cycle engine (TBCC).
Hengtao Shi
doaj   +1 more source

Quantifying the Resilience Performance of Airport Flight Operation to Severe Weather

Aerospace, 2022
The increased number of severe weather events caused by global warming in recent years is a major turbulence factor for airport operation and results in more irregular flights.
Xinglong Wang, Ziyan Chen, Kenan Li
doaj   +1 more source

A novel dual-stator hybrid excited synchronous wind generator [PDF]

, 2009
This paper presents a novel dual-stator hybrid excited synchronous wind generator and describes its structural features and operation principle. The no-load magnetic fields with different field currents are computed by 3-D finite-element method.
Chengfeng, Y., Heyun, L., Jian, G., Shuhua, F., Xiping, L., Zhu, Z.Q.   +5 more
core   +1 more source

The Stability Analysis of a Tether for a Segmented Space Elevator

Aerospace, 2022
The space elevator system is a space tether system used to solve low-cost space transportation. Its high efficiency, large load and other characteristics have broad application prospects in the aerospace field. The stability analysis is the foundation of
Shihao Luo, Naigang Cui, Xiaowei Wang, Youhua Fan, Haitao Gu   +4 more
doaj   +1 more source

ELEMENTARY LINKS OF LINEAR SPATIAL RHEOLOGICAL MODEL OF ASPHALT-CONCRETE [PDF]

Avtomobilʹnyj Transport (Harʹkov), 2010
The article deals with three-demensional mathematical models of the deformation mode of Hook, Newton, Maxwell and Kalvin elements.
V. Bogomolov, V. Zhdaniuk, S. Bogomolov
doaj  

On the Estimation of Vector Wind Profiles Using Aircraft-Derived Data and Gaussian Process Regression

Aerospace, 2022
This work addresses the problem of vertical wind profile online estimation at a given location. Specifically, the north and east components of the wind are continuously estimated as functions of time and altitude at two waypoints used for landing on the ...
Marius Marinescu, Alberto Olivares, Ernesto Staffetti, Junzi Sun   +3 more
doaj   +1 more source

Concurrent Trajectory Optimization and Aircraft Design for the Air Cargo Challenge Competition

Aerospace, 2022
A coupled aerostructural aircraft design and trajectory optimization framework is developed for the Air Cargo Challenge competition to maximize the expected score based on cargo carried, altitude achieved and distance traveled.
Nuno M. B. Matos, Andre C. Marta
doaj   +1 more source

Bivariate-Dependent Reliability Estimation Model Based on Inverse Gaussian Processes and Copulas Fusing Multisource Information

Aerospace, 2022
Reliability estimation for key components of a mechanical system is of great importance in prognosis and health management in aviation industry. Both degradation data and failure time data contain abundant reliability information from different sources ...
Rentong Chen, Chao Zhang, Shaoping Wang, Li Hong   +3 more
doaj   +1 more source

OpenAP.top: Open Flight Trajectory Optimization for Air Transport and Sustainability Research

Aerospace, 2022
Trajectory optimization has been an active area of research for air transport studies for several decades. But almost all flight optimizers proposed in the literature remain close-sourced, which presents a major disadvantage for the advancement of ...
Junzi Sun
doaj   +1 more source