Results 51 to 60 of about 21,894 (183)

Bio-inspired programmable matter for space applications [PDF]

open access: yes, 2012
Nowadays, space structures are often designed to serve only a single objective during their mission life, examples are solar sails for propulsion, antennas for communication or shields for protection.
Sinn, Thomas, Vasile, Massimiliano
core  

Direct Observation of Quasi‐Monochromatic Gravity Wave Packets Associated With the Polar Night Jet Using a Doppler‐Rayleigh Lidar

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 14, 28 July 2025.
Abstract An advanced hodograph technique was applied to extract quasi‐monochromatic, linear gravity wave (GW) packets from simultaneous wind and temperature measurements made using a ground‐based Doppler‐Rayleigh‐Mie‐Raman lidar located in Kühlungsborn (54°N, 12°E).
Robin Wing   +7 more
wiley   +1 more source

METHODS AND MEANS OF CONTROL OF METROLOGICAL CHARACTERISTICS OF PHYSICAL QUANTITIES CONVERTERS

open access: yesИзмерение, мониторинг, управление, контроль
Background. The article is devoted to the study of the amplitude-frequency characteristics of physical quantity converters under manufacturing conditions.
P.G. Mikhaylov   +4 more
doaj   +1 more source

Proposal to National Aeronautics and Space Administration for continuation of a grazing incidence imaging telescope for X-ray astronomy using sounding rockets [PDF]

open access: yes
The construction of a high resolution imaging telescope experiment payload suitable for launch on an Astrobee F sounding rocket was proposed. Also integration, launch, and subsequent data analysis effort were included.
Murray, B.
core   +1 more source

Ti3C2Tx MXene‐Zirconium Diboride Based Ultra‐High Temperature Ceramics

open access: yesAdvanced Science, Volume 12, Issue 23, June 20, 2025.
This study demonstrates the effectiveness of Ti3C2Tx MXenes as additives in ultra‐high‐temperature ceramics (ZrB₂), enhancing densification, reducing oxygen content, and improving mechanical properties. Through surfactant‐free electrostatic self‐assembly and spark plasma sintering, MXenes enabled the formation of a core–shell microstructure, resulting ...
Srinivasa Kartik Nemani   +11 more
wiley   +1 more source

A Data Acquisition System (DAS) for marine and ecological research from aerospace technology [PDF]

open access: yes
The efforts of researchers at Mississippi State University to utilize space-age technology in the development of a self-contained, portable data acquisition system for use in marine and ecological research are presented.
Johnson, R. A.
core   +1 more source

Flight 1 technical report for experiment 74-37 contained polycrystalline solidification in low-G [PDF]

open access: yes
A .005 M solution of fluorescein in cyclohexanol was directionally solidified in a standard 10 x 10 x 45mm UV silica cuvette, using a bottom thermoelectric chilling device. Progress of the experiment was monitored by time lapse photography. During flight
Kattamis, T. Z., Papaziak, J. M.
core   +1 more source

An experimental study of wall-injected flows in a rectangular cylinder [PDF]

open access: yes, 2017
An experimental investigation of the flow inside a rectangular cylinder with air injected continuously along the wall is performed. This kind of flow is a two-dimensional approximation of what happens inside a solid rocket motor, where the lateral grain ...
Favini, B., Perrotta, A., Romano, G. P.
core   +1 more source

Design and assembly of an affordable amateur rocket engine test bench using linear guides to reduce energy lost to structural deformation

open access: yes, 2022
Solid propellant rocket engines are the most accessible alternative for amateur rockets enthusiasts. Users can acquire reliable solid propellant rocket engines from a professional manufacturer, which can be costly, or decide to develop their own engines to save on expenses.
Arenas Gonzalez, Gabriel   +9 more
openaire   +1 more source

Feasibility study of storage concepts for Scout and other NASA solid propellant launch vehicles [PDF]

open access: yes
Feasibility study of long term storing of Scout and other solid propellant launch vehicles in assembled, flightworthy configuration and facility ...
Fielder, R. D., Nesbitt, H. N.
core   +1 more source

Home - About - Disclaimer - Privacy