Results 51 to 60 of about 132,013 (294)

Space shuttle: Supersonic aerodynamic characteristics of the MSC 040A orbiter (M equals 2.0 to 4.0) [PDF]

open access: yes
A wind tunnel test of the space shuttle orbiter configuration 040A was run in a 20 in. supersonic wind tunnel.
Moore, R.   +4 more
core   +1 more source

Transonic Wind Tunnel Testing [PDF]

open access: bronze, 1963
B. H. Goethert, Julius Lukasiewicz
openalex   +1 more source

Conductive Polymer Coatings Control Reaction Selectivity in All‐Iron Redox Flow Batteries

open access: yesAdvanced Materials, EarlyView.
Aqueous redox flow batteries are limited by the competing hydrogen evolution reaction (HER) at their negative electrodes. In this work, conductive polymers are conformally coated on porous carbonaceous electrodes to improve the reaction selectivity of hybrid all‐iron redox flow batteries.
Emre B. Boz   +3 more
wiley   +1 more source

Transonic wind tunnel test sections

open access: yesZAMP Zeitschrift für angewandte Mathematik und Physik, 1956
Um von Windkanalversuchen auf die Verhaltnisse beim freien Flug schliessen zu konnen, mussen die Einflusse der Kanalwande auf die Geschwindigkeitsverteilung am Modell berucksichtigt werden. Bei schallnaher Stromung sind diese Einflusse an Modellen ublicher Grosse so stark, dass sie die Messungen vollstandig verfalschen.
Albert D. Wood, Paul F. Maeder
openaire   +2 more sources

Analytical Models for Rotor Test Module, Strut, and Balance Frame Dynamics in the 40 by 80 Ft Wind Tunnel [PDF]

open access: yes
A mathematical model is developed for the dynamics of a wind tunnel support system consisting of a balance frame, struts, and an aircraft or test module. Data are given for several rotor test modules in the Ames 40 by 80 ft wind tunnel.
Johnson, W.
core   +1 more source

Advancements in Understanding the Physicochemical Properties of Reticular Materials: An In Situ and Operando Spectroscopic Perspective

open access: yesAdvanced Materials, EarlyView.
This review explores how in situ and operando spectroscopic techniques reveal the real‐time behavior of reticular materials, including MOFs and COFs. These methods track material formation and functionalization, structural changes, defect formation, dynamic responses to external triggers, and catalytic processes.
Bettina Baumgartner   +4 more
wiley   +1 more source

A simplified method for calculating temperature time histories in cryogenic wind tunnels [PDF]

open access: yes
Average temperature time history calculations of the test media and tunnel walls for cryogenic wind tunnels have been developed. Results are in general agreement with limited preliminary experimental measurements obtained in a 13.5-inch pilot cryogenic ...
Lamb, M., Stallings, R. L., Jr.
core   +1 more source

Pioneering the Future: Principles, Advances, and Challenges in Organic Electrodes for Aqueous Ammonium‐Ion Batteries

open access: yesAdvanced Materials, Volume 37, Issue 13, April 2, 2025.
Leveraging the numerous advantages of ammonium‐ion (NH₄⁺)—including cost‐effectiveness, low corrosiveness, preferential orientation, and rapid diffusion kinetics—aqueous NH₄⁺ batteries (AAIBs) have gained significant attention. This review highlights and evaluates the progress of AAIBs utilizing organic electrode materials such as small molecules ...
Mangmang Shi, Xiaoyan Zhang
wiley   +1 more source

Reduction of Skylab 2 ground winds [PDF]

open access: yes
A dampometer was designed and fabricated for measuring the amount of damping in the wind tunnel test model. The ground winds data reduction system (GWDRS) was taken to Langley Research Center in support of wind tunnel tests on the Skylab 2 program. Final
Rolfes, M. J.
core   +1 more source

Thermal Processing Creates Water‐Stable PEDOT:PSS Films for Bioelectronics

open access: yesAdvanced Materials, Volume 37, Issue 13, April 2, 2025.
Instead of using chemical cross–linkers, it is shown that PEDOT:PSS thin films for bioelectronics become water‐stable after a simple heat treatment. The heat treatment is compatible with a range of rigid and elastomeric substrates and films are stable in vivo for >20 days.
Siddharth Doshi   +16 more
wiley   +1 more source

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