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Rocket

About: Rocket is a research topic. Over the lifetime, 14018 publications have been published within this topic receiving 95852 citations. The topic is also known as: rockets.


Papers
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Proceedings ArticleDOI
01 Jul 1990
TL;DR: A low thrust chemical rocket test facility has recently become operational at the NASA-Lewis test cell as mentioned in this paper, which is used to conduct both long duration and performance tests at altitude over a thruster's operating envelope using hydrogen and oxygen gas for propellants.
Abstract: A low thrust chemical rocket test facility has recently become operational at the NASA-Lewis The new facility is used to conduct both long duration and performance tests at altitude over a thruster's operating envelope using hydrogen and oxygen gas for propellants The facility provides experimental support for a broad range of objectives, including fundamental modeling of fluids and combustion phenomena, the evaluation of thruster components, and life testing of full rocket designs The major mechanical and electrical systems are described along with aspects of the various optical diagnostics available in the test cell The electrical and mechanical systems are designed for low down time between tests and low staffing requirements for test operations Initial results are also presented which illustrate the various capabilities of the cell

27 citations

01 Jan 1988
TL;DR: The data obtained in the most recent Japan-US tether rocket experiment CHARGE 2 have been further analyzed in this paper, where the interaction of the moving tether system across the geomagnetic field with the ionospheric plasma can be explained by a simple model of the current through a plasma.
Abstract: The data obtained in the most recent Japan-US tether rocket experiment CHARGE 2 have been further analyzed. The interaction of the moving tether system across the geomagnetic field with the ionospheric plasma can be explained by a simple model of the current through a plasma. The response of the tether system when a high voltage is applied is studied and 500 volts could be applied without any appreciable discharge. The detected signal of the wave excited by an application of high voltage between the mother and daughter rocket and by a pulse modulated electron beam is also studied.

27 citations

01 Mar 1972
Abstract: Ji'Langmuir probe system capable of high frequency response has been designed and developed at the Physietlt Res~ LabM'ftt6Ty,Ahmedabad, and used at Thumba to study ionization irregularities in the equatorial lower ionosphere in the scale size ranges 1-15 and 30-300 m. Studies have been conducted at different times of the day as well as during night. It is found that during evening and night-time periods, many of the obs~ed features of the irregularities can be explained in terms of a drift dissipative instability mechanism connected with background electron density gradients and the presence of electric fields in

27 citations

Patent
27 Sep 1940
TL;DR: In this article, an aircraft of the type in which a rocket blast provides selective propulsion, either by direct rocket operation or by coaction with turbine blades against which the rocket blast may be directed and which blades are associated with an aircraft propeller of the usual type.
Abstract: This invention relates to aircraft of the type in which a rocket blast provides selective propulsion, either by direct rocket operation or by coaction with turbine blades against which the rocket blast may be directed and which blades are associated with an aircraft propeller of the usual type....

27 citations

01 Feb 1982
TL;DR: In this article, a comparison of the ionospheric substorm-related electric field could be made with a pre-breakup event earlier on this day (Marklund et al., 1982).
Abstract: On 27 January, 1979 the Substorm-GEOS rocket S23H was launched from ESRANGE, Kiruna, shortly after the onset of an intense magnetospheric substorm over northern Scandinavia. Rocket electric field and particle observations have been used to calculate ionospheric currents and heating rates. These results are generally consistent with the ground magnetic (SMA∗) and optical (all-sky, TV) observations. An important finding emerging from a comparison of this event with a pre-breakup event earlier on this day (Marklund et al., 1982) is that the ionospheric substorm-related electric field could be split up into two parts, namely: 1. (1) an ambient LT dependent field, probably of magnetospheric origin; 2. (2) superimposed on this a small-scale electric field associated with the bright auroral structures, being southward for both events. This is shown to have important consequences on the location of the ionospheric currents and the Joule energy dissipation relative to the auroral forms. For example, in the pre-breakup arc, Joule energy dissipation and particle energy flux were found to be anti-correlated, while in the breakup case correlated.

27 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202211
2021373
2020480
2019624
2018537
2017493