ESA Drop Your Thesis 2015 - Team Dropping Drops"

ESA Drop Your Thesis 2015 - Team Dropping Drops"

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ESA Science Project of MSS Erlangen on physics of water wetting a porous surface under microgravity conditions established via Fallturm Bremen (Drop Tower)

When a liquid droplet touches a porous surface, its penetration is first inhibited by a short inertial phase, followed by a longer regime dominated by viscosity. Although the inertial phase governs the dynamics of penetration, it is nearly impossible to observe it on Earth, as drops must be very small to avoid being deformed by gravity. As a result, the inertial phase has so far only been studied

Photos 02/11/2015

Today we managed to compress 3 Laura, Flo and Jonathan as well as the 4 experiments into a VW Lupo ! After a 7 hour car ride from Erlangen to Bremen we were welcomed by Thorben from ZARM and moved into the (really nice!) drop tower guest house which is right next to the drop tower. We will live there for the next two weeks and so spend our first evening shopping some groceries. We are excited for tomorrow morning where we will get to know everything and our work at ZARM officially starts.

Photos 29/10/2015

Since microgravity time is quite valuable, we will run 4 copies of our experiment simultaneously. After receiving the last parts from the workshop we completed the assembly of all 4 units today!

Photos 26/10/2015

Dropping Drops meets Astro Alex! On Saturday we presented our experiment at "Die Lange Nacht der Wissenschaften" where Laura and our advisor Jonathan had the opportunity to meet ESA astronaut Alexander Gerst.

20/10/2015
20/10/2015

Since we are quite curious we could not wait until we are at the drop tower to test the experiment. So we assembled a makeshift drop capsule by putting our experiment, a camera and some batteries into a shoebox. We then dropped the shoebox from the top of our lab room into a trashcan full of styrofoam. To our big surprise this acutally worked quite well and although the time it takes the shoebox to fall down in way to short to conduct the full experiment (there is a reason people go to the droptower after all) we at least could see a spherical drop forming.

20/10/2015

Hello, here are Laura, Fabian and Flo, we are a team of three students which has been awarded the opportunity to attend a drop-tower-campagin at the Bremen ZARM facility as part of the ESA Education Office sponsored program Drop Your Thesis!. We will research the imbibition of a drop of liquid water in a porous medium in zero-gravity. What this means is that we will create a large, spherical droplet of water and bringing it in contact with a porous surface and then watch how the drop is being swallowed into the pores.

For the duration of the campaign we will regularly update this page to keep everybody who is interested up to date on what we are doing.

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