Results 21 to 30 of about 2,285 (153)

Research Progresses of Flash Evaporation in Aerospace Applications

International Journal of Aerospace Engineering, Volume 2018, Issue 1, 2018., 2018
Liquid is overheated and evaporated quickly when it enters into the environment with lower saturation pressure than that corresponding to its initial temperature. This phenomenon is known as the flash evaporation. A natural low‐pressure environment and flash evaporation have unique characteristics and superiority in high altitude and outer space ...
Wei Ma, Siping Zhai, Ping Zhang, Yaoqi Xian, Lina Zhang, Rui Shi, Jiang Sheng, Bo Liu, Zonglin Wu, André Cavalieri   +9 more
wiley   +1 more source

Susquehanna Shale Hills Critical Zone Observatory: Shale Hills in the Context of Shaver's Creek Watershed

Vadose Zone Journal, Volume 17, Issue 1, Page 1-19, 2018., 2018
Core Ideas Studying the critical zone requires targeted research on water, energy, gas, solutes, and sediments. The SSHCZO targets a 165‐km2 watershed on sedimentary rocks in the northeastern United States. One SSHCZO subcatchment, Shale Hills, provides extraordinary data describing a shale CZ.
Susan L. Brantley, Tim White, Nicole West, Jennifer Z. Williams, Brandon Forsythe, Dan Shapich, Jason Kaye, Henry Lin, Yuning Shi, Margot Kaye, Elizabeth Herndon, Kenneth J. Davis, Yuting He, David Eissenstat, Julie Weitzman, Roman DiBiase, Li Li, Warren Reed, Kristen Brubaker, Xin Gu   +19 more
wiley   +1 more source

Thermal effects influencing measurements in a supersonic blowdown wind tunnel

Thermal Science, 2016
During a supersonic run of a blowdown wind tunnel, temperature of air in the test section drops which can affect planned measurements. Adverse thermal effects include variations of the Mach and Reynolds numbers, variation of airspeed, condensation of moisture on the model, change of characteristics of the instrumentation in the model, et ...
Djordje Vukovic, Dijana Damljanovic
openaire   +1 more source

Wind Tunnel Testing on Start/Unstart Characteristics of Finite Supersonic Biplane Wing

International Journal of Aerospace Engineering, Volume 2013, Issue 1, 2013., 2013
This study describes the start/unstart characteristics of a finite and rectangular supersonic biplane wing. Two wing models were tested in wind tunnels with aspect ratios of 0.75 (model A) and 2.5 (model B). The models were composed of a Busemann biplane section.
Hiroshi Yamashita, Naoshi Kuratani, Masahito Yonezawa, Toshihiro Ogawa, Hiroki Nagai, Keisuke Asai, Shigeru Obayashi, James J. McGuirk   +7 more
wiley   +1 more source

Control of Reynolds number in a high speed wind tunnel [PDF]

Journal of Aerospace Technology and Management, 2009
A conceptual control model for the Reynolds number test based on isentropic relations was established for the supersonic wind tunnel. Comparison of the system response of the model simulation and the actual wind tunnel test data was made to design the ...
Maurício G. Silva, Victor O.R. Gamarra, Vitor Koldaev   +2 more
doaj  

Plant Responses to Anomalous Heat and Drought Events in the Sonoran Desert

Global Change Biology, Volume 31, Issue 5, May 2025.
What are the impacts of region‐wide heat and drought events on desert vegetation? This multi‐scale assessment shows that columnar cacti and succulent trees show acute plant stress across the Sonoran Desert. The expected increased frequency of heat and drought events will likely have landscape‐wide impacts that could fundamentally reshape populations of
Benjamin T. Wilder, Kevin R. Hultine, Wetherbee Bryan Dorshow, Sula E. Vanderplank, Blanca R. López, Alfonso Medel‐Narváez, Monica Marvan, Kristen Kindl, Aryn Musgrave, Shane Macfarlan, Exequiel Ezcurra   +10 more
wiley   +1 more source

Infra‐Through Ultrasonic Piezoelectric Acoustic Vector Sensor Particle Rejection System

Smart Materials Research, Volume 2012, Issue 1, 2012., 2012
Sensor elements which employ fine filaments are often vulnerable to particulate fouling when used in certain operational field conditions. Depending on the size, attraction level, thermal and electrical conduction, and charge accumulation properties of the particles, erroneous readings can be easily generated in such “dirty” environments.
Scott E. Cravens, Ronald M. Barrett, Tao Li   +2 more
wiley   +1 more source

Short-duration, transonic flow, variable-porosity test section [PDF]

, 1970
Short-duration test facility obtains extremely high Reynolds number flows in subsonic, transonic, and supersonic speed ranges, and aids in solving Reynolds number-dependent aerodynamic and thermodynamic problems in design and testing of large, high speed
Davis, J. W., Hill, O. E.
core   +1 more source

Numerical Investigation of a Supersonic Wind Tunnel Diffuser Optimization

Aerospace
The objective of this study is to enhance the methodology for the design of a supersonic wind tunnel, improving the process with advanced computational techniques.
Riccardo Nicoletti, Francesco Margani, Luca Armani, Antonella Ingenito, Chihiro Fujio, Hideaki Ogawa, Seoeum Han, Bok Jik Lee   +7 more
doaj   +1 more source

Testing of calibration models in order to certify the overall reliability of the trisonic blowdown wind tunnel of VTI [PDF]

FME Transactions, 2010
It is strongly recommended that wind tunnel calibrations become a regular part of the operational cycle for any wind tunnel. They facilitate tunnel-totunnel data comparisons. Standard calibration model, representing a generic winged missile configuration,
Damljanović Dijana, Rašuo Boško
doaj