Results 61 to 70 of about 62,680 (295)
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori +1 more
wiley +1 more source
Sounding Rockets are unique Experimental Platforms [PDF]
, 2018 Sounding rockets are unique experimental platforms! They are unmanned, readily available, cost-effective and can achieve both, in-situ measurements or flight experimentation in all layers of the atmosphere and multi-minute operations in space with ...
Kirchhartz, Rainer +2 more
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Sounding Rocket Preliminary Design
European Journal of Engineering and Technology Research, 2021 This article aims at studying sounding rocket (SR) class, or those vehicles launched from the earth and carrying out various experiments at high altitudes. After the end of their mission, rockets should deliver a payload to a given point or to give range. In general, design tasks are divided into direct and inverse ones.
openaire +3 more sources
How can children and young people have a voice in urban treescapes?
People and Nature, EarlyView.Abstract Scientific understanding of climate change has, to date, failed to result in sufficient action. This paper proposes that a deficit model of top‐down learning and dissemination in relation to public engagement with science may be part of the problem, particularly when considering the attitudes, values and empowerment of children and young ...
Simon Carr +10 more
wiley +1 more source
Encyclopedia: Satellites and Sounding Rockets, August 1959 - December 1969 [PDF]
, 1970 Major space missions utilizing satellites or sounding rockets managed by the NASA Goddard Space Flight Center between August 1959 and December 1969 were documented.
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Unsaturated biobased polyesters from bicyclic α‐pinene‐based diols
Polymer International, EarlyView.We present the synthesis of four biosourced unsaturated polyesters made from chiral terpene‐based diols and esters of renewable diacids. The resulting materials harbor a bicyclic pinene ring in their backbones which leads to enhanced thermal properties while still conferring susceptibility to enzyme hydrolysis for chains having a cis alkene.
Ganapathy Ranjani +4 more
wiley +1 more source
Ascent Problems of Sounding Rockets [PDF]
, 1961 Sounding rockets are rocket vehicles designed to carry scientific payloads above the sensible level of the atmosphere. The trajectories of these rockets are very steep, and as a consequence, two important problems arise.
Crabill, N. L.
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Earth, Planets and SpaceElectromagnetic compatibility (EMC) is a standard test to ensure that electromagnetic instruments used in scientific experiments, such as those on spacecraft, CubeSats, and sounding rockets, operate without causing interference.
Mitsunori Ozaki +7 more
doaj +1 more source
Antarctic Record, 1980 Two sounding rockets, S-210JA-20 and 21, were launched into the disturbed ionosphere from Syowa Station, Antarctica, in the winter of 1976 for measuring electron density and temperature.
Shigeru MIYAZAKI +2 more
doaj +1 more source