Semi-analytical investigations of high area-to-mass ratio geosynchronous space debris including Earth’s shadowing effects

2008 ◽  
Vol 42 (8) ◽  
pp. 1429-1443 ◽  
Author(s):  
S. Valk ◽  
A. Lemaître
Keyword(s):  
Space Debris ◽  
Mass Ratio ◽  
High Area ◽  
Shadowing Effects

Properties of the high area-to-mass ratio space debris population at high altitudes

2008 ◽  
Vol 41 (7) ◽  
pp. 1039-1045 ◽  
Author(s):  
T. Schildknecht ◽  
R. Musci ◽  
T. Flohrer
Keyword(s):  
Space Debris ◽  
Mass Ratio ◽  
High Altitudes ◽  
High Area

Study of a population of space debris objects with a high area-to-mass ratio in high Earth orbits

2020 ◽  
Author(s):  
V.M. Agapov ◽  
I.E. Molotov ◽  
G.K. Borovin ◽  
A.I. Streltsov
Keyword(s):  
Space Debris ◽  
Orbital Motion ◽  
Center Of Mass ◽  
Light Curves ◽  
Mass Ratio ◽  
High Area ◽  
Motion Parameters ◽  
High Earth Orbits ◽  
Earth Orbits

The data on 498 space debris objects with a high area-to-mass ratio (HAMR) detected in 2016–2017 were analyzed to identify possible candidates for the role of "parent objects". As a result, the origin of several HAMR fragments was determined. These fragments separated from three different large objects in the geostationary orbit (GEO) region, including two functioning spacecraft and one rocket launcher stage. Observations of these three objects showed that there were no noticeable differences in their light curves, which indicates the absence of significant changes in the geometric shape, reflective characteristics and motion parameters relative to the center of mass. At least, both spacecraft continued to perform retention maneuvers in their positions on the GEO, and no unpredictable changes were detected in the orbital motion and in the stage light curve. Therefore, the formation of newly discovered fragments cannot be associated with the catastrophic destruction of the “parent objects”.

Modeling the High Area-to-Mass Ratio Debris in GEO

2006 ◽  
Author(s):  
Michael Oswald ◽  
Sven Flegel ◽  
Sebastian Stabroth ◽  
Carsten Wiedemann ◽  
Peter Vörsmann ◽  
...  
Keyword(s):  
Mass Ratio ◽  
High Area

scholarly journals Geostationary secular dynamics revisited: application to high area-to-mass ratio objects

2016 ◽  
Vol 128 (2-3) ◽  
pp. 149-181 ◽  
Author(s):  
Fabien Gachet ◽  
Alessandra Celletti ◽  
Giuseppe Pucacco ◽  
Christos Efthymiopoulos
Keyword(s):  
Mass Ratio ◽  
Secular Dynamics ◽  
High Area

scholarly journals ON THE EFFECTS OF SOLAR RADIATION PRESSURE ON THE DEVIATION OF ASTEROIDS

2021 ◽  
Vol 57 (2) ◽  
pp. 279-295
Author(s):  
L. O. Marchi ◽  
D. M. Sanchez ◽  
F. C. F. Venditti ◽  
A. F. B. A. Prado ◽  
A. K. Misra
Keyword(s):  
Solar Radiation ◽  
Radiation Pressure ◽  
Scientific Research ◽  
Orbital Plane ◽  
Solar Radiation Pressure ◽  
The Sun ◽  
Mass Ratio ◽  
High Area ◽  
Planetary Defense

In this work, we study the effects of solar radiation pressure (SRP) on the problem of changing the orbit of an asteroid to support planetary defense, scientific research, or exploitation of materials. This alternative considers a tethered reflective balloon (or a set of reflective balloons) attached to the asteroid, with a high area-to-mass ratio, to use the SRP to deflect a potentially hazardous asteroid (PHA) or to approximate the target asteroid to Earth. The tether is assumed to be inextensible and massless, and the motion is described only in the orbital plane of the asteroid around the Sun. The model is then used to study the effects that the tether length, the reflectivity coefficient, and the area-to-mass ratio have on the deviation of the trajectory of the asteroid.

A New Fabrication Process for Microstructures With High Area-to-Mass Ratios by Stiffness Enhancement

2018 ◽  
Author(s):  
Zhongjing Ren ◽  
Jianping Yuan ◽  
Xiaoyu Su ◽  
Hao Sun ◽  
Richard Galos ◽  
...  
Keyword(s):  
Joule Heating ◽  
Mechanical Systems ◽  
Silicon Layer ◽  
Fabrication Process ◽  
Structural Parameter ◽  
Mass Ratio ◽  
Micro Electro Mechanical Systems ◽  
Thickness Increase ◽  
High Area ◽  
Mass Ratios

A new fabrication process for stiffness-enhanced microstructures with high area-to-mass ratios is presented in this paper. In order to acquire an enhanced stiffness without ruining the structural parameter of area-to-mass ratio, multilayered metallic microstructures are proposed and fabricated by surface and bulk fabrication processes from Micro-Electro-Mechanical Systems (MEMS) technologies. Microstructures based on beams with symmetrically deposited metals are physically built and tested on wafers. A sacrificial silicon layer is used to form gaps between bimetal layers and the microstructures can be deployed vertically when heated due to the effect of thermal mismatch between different materials. The results show a dramatic thickness increase when actuated by Joule heating, and thus a great bending stiffness enhancement.

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