Results 61 to 70 of about 11,239 (255)

Positional Accuracy Assessment of Lidar Point Cloud from NAIP/3DEP Pilot Project

Remote Sensing, 2020
The Leica Geosystems CountryMapper hybrid system has the potential to collect data that satisfy the U.S. Geological Survey (USGS) National Geospatial Program (NGP) and 3D Elevation Program (3DEP) and the U.S.
Minsu Kim, Seonkyung Park, Jeffrey Irwin, Collin McCormick, Jeffrey Danielson, Gregory Stensaas, Aparajithan Sampath, Mark Bauer, Matthew Burgess   +8 more
doaj   +1 more source

Ideas for a three-aircraft planetary observing fleet [PDF]

SPIE Proceedings, 2003
A new generation of research aircraft, based on modern mid-sized business jets, will provide access to upper regions of the atmosphere and remote regions of the planet not reachable by the current research aircraft. Equipped with extensive research modifications, modern instruments, and advanced air-to-ground communication systems, these new aircraft ...
Carlson, David, Schumann, Ulrich
openaire   +2 more sources

Fundamentals of Thermal Transport and Energy Conversion in Ultra‐High Temperature Ceramics: From Microscale Mechanisms to Macroscopic Properties

Advanced Science, EarlyView.
This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Zhipeng Pei, Yue Li, Jiayu Xing, Yue Zhu, Ru Zhang, Huan Wu, Zihao Qin, Gang Pei, Man Li   +8 more
wiley   +1 more source

Aircraft contrails : observation and prediction

Everyone can predict contrail lifespan with sufficient accuracy of aircraft flying overhead. Needed is only a smartphone with Internet access and two charts. If it is so easy, pilots, airlines, and air traffic control can also do it. Every pilot can request Flight Level xyz to avoid warming contrails. Time for contrail management is now.
Briegert, Finn, Scholz, Dieter
openaire   +1 more source

A Folded, Structure‐Integrated Bimodal Sensor Enabling Non‐Contact and Tactile Perception for Intelligent Robots

Advanced Science, EarlyView.
A foldable bimodal sensor integrates a triboelectric nanogenerator and graphene piezoresistive effect into a monolithic laser‐induced graphene film. It enables synchronous non‐contact and tactile perception, achieving a distance of 110 mm, a sensitivity of 11.2 kPa−1, and a response time of 10 ms.
Weixiong Yang, Yuhan Guo, Mingguang Han, Bin Feng, Yuan Ma, Bingang Xu, Fu Liu, Dan Wang, Pingping Hao, Xilun Ding, Sida Luo   +10 more
wiley   +1 more source

Supercritical CO2‐Induced Porous MXene Films for Electromagnetic Interference Shielding and Infrared Stealth

Advanced Science, EarlyView.
The phase transition of supercritical CO2 induces the foaming of dense MXene film without compromise inherent structure of MXene nanosheet. The foamed porous MXene film manifests remarkable EMI shielding and infrared thermal camouflage performances. Moreover, the foaming strategy is broadly adaptable and can be extended to other two‐dimensional films ...
Hui Zhao, Shuai Li, Jiabei He, Tong Gao, Jingfeng Wang, Dongxiao Kan, Wangtu Huo, Lixin Chen   +7 more
wiley   +1 more source

Aircraft Observations of Aerosol Properties and Their Impact on Cloud Droplets in Gansu Province

应用气象学报
Aerosol-cloud interaction has significant influences on radiation balance, water cycle and energy cycle of earth-air system. Sources of aerosols in Gansu Province are complex, involving both natural and anthropogenic activities. Based on typical aircraft
Wang Yanfeng, Zhang Qiang, Xi Lizong, Leng Wennan, Li Xia, Wang Rong, Huang Shan   +6 more
doaj   +1 more source

Surface‐Spin‐Induced Magnetic Loss Enhancement in Ultralight Electromagnetic Absorbers

Advanced Science, EarlyView.
Fe3O4 nanoparticles with different hollow rates were synthesized to demonstrate the key role of surface moment in magnetic loss process. Using the same volume filling ratio, the 54.1% hollow Fe3O4 absorber represents about 20% enhancement in the imaginary part (μ'') than solid particles due to the coexisting magnetic resonance of inside and outside ...
Ruimin Ren, Ke Yang, Chichong Lu, Song Ma, Bowen Zheng, Zhenhui Ma   +5 more
wiley   +1 more source

Research on Optimal Attitude of Large Deformation Airplane in Full‑Scale Aircraft Static Test

Transactions of Nanjing University of Aeronautics and Astronautics
The accuracy of the full-scale aircraft static tests is greatly influenced by the aircraft attitude. This paper proposes an aircraft attitude optimization method based on the characteristics of the test.
ZHENG Jianjun, JIN Feng, LIU Wei, ZHANG Yiming, GUO Qiong   +4 more
doaj   +1 more source

Emission Fourier transform spectroscopy for remote sensingof the Earth's atmosphere

Annals of Geophysics, 2003
Fourier transform emission spectroscopy can make an important contribution in the observation of the Earth's atmosphere and in the investigation of atmospheric physics and chemistry.
B. Carli, U. Cortesi, G. Bianchini
doaj   +1 more source