Results 51 to 60 of about 15,241 (253)

Hybrid fuzzy sliding mode control for motorised space tether spin-up when coupled with axial and torsional oscillation [PDF]

, 2010
A specialised hybrid controller is applied to the control of a motorised space tether spin-up space coupled with an axial and a torsional oscillation phenomenon.
Cartmell, M., Chen, Y.
core   +1 more source

The Maintenance of Orbital States in a Floating Partial Space Elevator Using the Reinforcement Learning Method

Aerospace
A partial space elevator (PSE) is a multi-body tethered space system in which the main satellite, typically an ultra-large spacecraft or a space station in a higher orbit, is connected to a transport spacecraft in a lower orbit via a tether, maintaining ...
Weili Xu, Xuerong Yang, Gefei Shi
doaj   +1 more source

The dynamic phenomena of a tethered satellite: NASA's first Tethered Satellite Mission, TSS-1 [PDF]

The tethered satellite system (TSS) was envisioned as a means of extending a satellite from its base (space shuttle, space station, space platform) into a lower or higher altitude in order to more efficiently acquire data and perform science experiments.
Mowery, D. K., Ryan, R. S., Tomlin, D. D.   +2 more
core   +1 more source

Tethered satellite system [PDF]

A reusable system is to be developed to enable a variety of scientific investigations to be accomplished from the shuttle, considering the use of a tethered system with manual or automated control, deployment of a satellite toward or away from the Earth,
Sisson, J.
core   +1 more source

Tethered satellite control mechanism [PDF]

, 1983
The tethered satellite control mechanisms consist of four major subsystems. The reel drive mechanism stores the tether. It is motor driven and includes a level wind to uniformly feed the tether to the reel.
Kyrias, G. M.
core   +1 more source

Forcing the Side‐on π‐Coordination of a C≡C Triple Bond to Technetium Using the As,CC,As Alkyne Pincer Ligand 1,2‐Bis(2‐(diisopropylarsaneyl)‐4‐(trifluoromethyl)phenyl)Ethyne

Angewandte Chemie International Edition, EarlyView.
Technetium alkyne complexes have eluded isolation for decades with the only indicators for their existence being the isolation of vinylidene carbenes or their follow‐up reaction products despite plentiful of reports for neighboring elements. Stable, crystalline Tc(III) and Tc(V) alkyne complexes (and their Re analogs) have now been prepared and fully ...
Maximilian Roca Jungfer, Moritz Johannes Ernst, Lukas Eberle, Marius Kesselring, Guilhem Claude, Joachim Ballmann   +5 more
wiley   +1 more source

Tethered Satellite System (TSS) core equipment [PDF]

To date, three Tethered Satellite System (TSS) missions of the Italian provided scientific satellite orbiting in the ionosphere connected to U.S. Space Shuttle is foreseen.
Bonifazi, C.
core   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

The Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li, Mike Schindler, Martha Paskin, Venkata A. Surapaneni, Elliott Scott, Sabine Hauert, Nicholas Payne, David E. Cade, Jeremy A. Goldbogen, Frederik H. Mollen, Daniel Baum, Sean Hanna, Mason N. Dean   +12 more
wiley   +1 more source

Long-Duration Inspection of GNSS-Denied Environments with a Tethered UAV-UGV Marsupial System

Drones
Unmanned Aerial Vehicles (UAVs) have become essential tools in inspection and emergency response operations due to their high maneuverability and ability to access hard-to-reach areas. However, their limited battery life significantly restricts their use
Simón Martínez-Rozas, David Alejo, José Javier Carpio, Fernando Caballero, Luis Merino   +4 more
doaj   +1 more source

Aerodynamic calculations related to tethered sub-satellite experiments [PDF]

The results are presented of four aerodynamic studies that were in support of a broader, preliminary inquiry concerning the potential use of downward-deployed tethered sub-satellites for in-flight aerothermodynamic research.
Potter, J. Leith, Rockaway, J. Kent
core   +1 more source