Results 111 to 120 of about 16,250 (289)

Design and testing of a deployable, retrievable boom for space applications [PDF]

open access: yes
The Deployable Retrievable Boom which was developed as a part of the joint U.S.-Italian Tethered Satellite System (TSS) is described. The design mission of the boom is to support, deploy, and retrieve an experiment package for the study of the ...
Becchi, P., Dellamico, S.
core   +1 more source

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton   +4 more
wiley   +1 more source

Clustering of tethered satellite system simulation data by an adaptive neuro-fuzzy algorithm [PDF]

open access: yes
Recent developments in neuro-fuzzy systems indicate that the concepts of adaptive pattern recognition, when used to identify appropriate control actions corresponding to clusters of patterns representing system states in dynamic nonlinear control systems,
Mitra, Sunanda, Pemmaraju, Surya
core   +1 more source

A Method for Establishing a Station-Keeping, Stratospheric Platform for Astronomical Research

open access: yes, 2015
During certain times of the year at middle and low latitudes, winds in the upper stratosphere move in nearly the opposite direction than the wind in the lower stratosphere. Here we present a method for maintaining a high-altitude balloon platform in near
Brown, Yorke, Fesen, Robert
core   +1 more source

Model‐Based Systems Engineering in Space Applications: A Comprehensive Literature Review

open access: yesSystems Engineering, EarlyView.
ABSTRACT The growing complexity of space engineering is driving the demand to embrace the adoption of Model‐Based Systems Engineering (MBSE). Although the MBSE is well‐practiced in the space industry, the level of effort and need required to obtain the benefits of MBSE vastly differ across enterprises; this disparity presents a significant challenge to
Rehobot Bekele Buruso   +4 more
wiley   +1 more source

Theoretical investigation of EM wave generation and radiation in the ULF, ELF, and VLF bands by the electrodynamic orbiting tether [PDF]

open access: yes
The problem of electromagnetic wave generation by an electrodynamic tethered satellite system is important both for the ordinary operation of such systems and for their possible application as orbiting transmitters.
Estes, Robert D., Grossi, Mario D.
core   +1 more source

Nickel Foam Electrodes—A Versatile, Powerful, and Readily Available Tool in Electro‐Organic Synthesis

open access: yesThe Chemical Record, EarlyView.
Nickel foam—one material, two faces, and several versatile roles depending on electrolytic conditions. For more than 50 years, nickel foam electrodes have served in electrosynthesis as powerful and readily available electrode materials. Due to their inexpensive nature and easy handling, they have been widely employed.
Rok Narobe   +2 more
wiley   +1 more source

Percutaneous Aponeurotomy and Lipofilling in Complex Periorbital Scar Revision

open access: yesWorld Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Periorbital scars and deformities pose a significant challenge due to the region's delicate anatomy and esthetic importance. This case series explores the application of percutaneous aponeurotomy and lipofilling (PALF) in three patients with complex periorbital scarring resulting from surgical, traumatic, and pathological causes.
Daniel Karasik   +5 more
wiley   +1 more source

Recoverable Plasma Diagnostics Package (RPDP) [PDF]

open access: yes
The recoverable plasma diagnostics package (RPDP) is an ejectable and recoverable satellite with flight and ground support systems so that it can be utilized in three modes: attached to an remote manipulator system; tethered; or as a subsatellite.
Roberts, W. T.
core   +4 more sources

Guidebook for analysis of tether applications [PDF]

open access: yes
This guidebook is intended as a tool to facilitate initial analyses of proposed tether applications in space. The guiding philosophy is that a brief analysis of all the common problem areas is far more useful than a detailed study in any one area.
Carroll, J. A.
core   +1 more source

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