EntrySat

EADS Defense and Space (Astrium)

GARCIA Raphael — 2015-04-23T17:23:48Z

EADS Defense and Space (Astrium) provided us the Thermica software for thermal modelling of our satellite.

ESATAN Thermal modelling company

GARCIA Raphael — 2015-04-23T17:18:41Z

ESATAN Thermal modelling company provided to the project the ThermXL software for the thermal analysis of the satellite.

CNES Janus

GARCIA Raphael — 2015-04-23T17:08:47Z

The french space agency (CNES) provides the main fundig of the project through the JANUS program.

Student, supervisors and CNES advisory team of EntrySat during 2013-2014

GARCIA Raphael — 2014-12-12T14:36:18Z

The students, supervisors and CNES advisory team gathered in June 2014 for the Critical Design Review of EntrySat Satellite.

This review was successful, and it allows to have a picture of the full team in front of the thermal model of our satellite just coming back from thermal vaccum tests :
http://websites.isae.fr/IMG/jpg/photo_revue_cdr-2.jpg

Assembly Integration and Test Review on 8th January at ISAE

GARCIA Raphael — 2014-12-11T13:07:24Z

The Assembly Integration and Test Readiness Review will be done
on 8th January 2015 at Amphi 4 from 13:30 to 16:30.
The review panel will be composed CNES and QB50 representatives.

Here is a preliminary agenda :
13H30 Wecome / Project overview and status
14H00 Sub-system status and schedule
15h00 Validation and Verification plan
16H00 EntrySat user manual
16H30 Panel discussion and recommandations

EntrySat testing activities

GARCIA Raphael — 2014-11-14T16:59:54Z

In June 2014, EntrySat thermal and mechanical models we re tested in thermal vaccum Chamber at IRAP, and ICA vibration falicity.

EntrySat thermal model tested in thermal vaccum chamber at IRAP laboratory.

EntrySat mechanical model tested in vibrations at DMSM/ICA vibration facility.

EntrySat description

GARCIA Raphael — 2014-11-14T16:23:09Z

The Low Earth Orbit is getting more and more crowded with space debris.
Objects at LEO experience a natural decay process due to the atmospheric drag, which leads to their re-entry into the atmosphere. Most of these objects are monitored by ground-based systems, and computational models are used to estimate their trajectories. However, the precise re-entry point is difficult to predict because of the dependence on many uncertain parameters, such as the attitude of the object, the heat transfer coefficients, the atmospheric density, and the solar activity.
The EntrySat is a 3U CubeSat designed to study the atmospheric re-entry.
The reduced dimensions, 34x10x10 cm, as well as the absence of special protective systems, make it very similar to debris produced during the breakup of a spacecraft. The satellite will collect data about the temperature, heat flux, pressure, drag force, and attitude during re-entry. All data will be transmitted before its destruction using the Iridium communication system.
The mission, funded by CNES, has a launch opportunity in the context of the QB50 project, an international network of fifty double and triple CubeSats with the objective of studying the lower thermosphere (90 - 380 km).

After the Critical Design Review with CNES experts in June 2014, the project has been selected to flight with QB50 !
Picture above show the ISAE tudents presenting the mission and the thermal model at Toulouse space show in June 2014.

More than 30 students and more than 20 permanent researchers and engineers will be involved this year on the project.

Next target is the Assembly Integration and Test Review that will be on 8th of January 2015.