E.T.PACK deployment trajectory
From Andrea Valmorbida
Team E.T.PACK at the University of Padova:
E. Lorenzini, A. Valmorbida, C. Bettanini, M. Pertile, G. Colombatti, G. Sarego, L. Olivieri
E.T.PACK - Electrodynamic Tether Technology for Passive Consumable-less Deorbit Kit
A H2020 FET OPEN project aiming to develop a deorbit kit and related software based on low work-function tether technology.
E.T.PACK project partners:
- University Carlos III of Madrid - coordinator (Spain)
- University of Padova (Italy)
- Technical University Dresden (Germany)
- Fraunhofer Institute - IKTS (Germany)
- Sener Aeroespacial (Spain)
- Advanced Thermal Devices (Spain)
Description of the animation
The animation shows the deployment trajectory for E.T.PACK.
The Deployment Mechanism Module (DMM) defines the reference frame having the x-axis along the DMM Flight Direction and the y-axis along the Radial direction (from Earth's center of mass to the DMM's center of mass).
The Electron Emitter Module (EEM) is connected to the DMM through the tether, shown in continuous black line, and during the deployment of the tether it follows the dashed blue trajectory.
The attached figure shows the Local-Vertical Local-Horizontal (LVLH) reference frame and the definition of the state variables used to describe the deployment dynamics: the tether length, the length rate, the libration angle and the libration rate.
The values of the four state variables are listed in the attached file with a sampling time of 10 s.
The attached files can be downloaded by clicking the corresponding download symbol in the actions column, under the Attachments panel.
More information about the E.T.PACK H2020 project can be found at the following web page: