ALL PROJECTS
MISSION DOSSIER
OL-004
COMPLETED· 2023 – 2024

Zero-G Experiments, CNES

MicrogravityFluid DynamicsExperimentalCNES
// 01

Overview

Selected for the 66th Parabolic Flight Campaign of the French CNES. Designed and ran six original microgravity experiments spanning fluid dynamics, thermodynamics, chemistry, and classical mechanics, aboard a Zero-G aircraft over Bordeaux.

Design experiments demonstrating physical phenomena that change meaningfully in microgravity

Meet CNES safety and design review requirements for a manned flight campaign

Execute all experiments within 20-second parabolic microgravity windows

Collect usable data and document results for post-flight analysis

Preparing the experiments before the campaign

Experiment Concept & Selection

We brainstormed and evaluated dozens of ideas across fluid mechanics, thermodynamics, chemistry, and classical mechanics, then selected six experiments that would change meaningfully in weightlessness and still produce clear, observable results inside a 20-second window. Each one started as a concept sketch and a CAD model.

Build & CNES Safety Review

Over several months we built and iterated on the experiment rigs to pass CNES's safety requirements: aluminum-frame structures, sealed acrylic enclosures, and self-contained fluid apparatus. This meant structural reviews, material-compatibility checks, and repeated design presentations to CNES engineers, each revision making the hardware safer, simpler, and more reliable.

Ground Testing

Before flight, we ran every experiment on the ground to rehearse the procedure and set a 1-g baseline, from spinning up a vortex on a magnetic stirrer to tracking how a dye disperses through water. Ground testing is what let us trust the few seconds we would get in the air.

Flight Day & Results

The campaign took place in Bordeaux aboard CNES's Zero-G aircraft. During each parabola the aircraft follows a Keplerian arc that produces about 20 seconds of weightlessness. We ran the experiments across multiple parabolas, operating the rigs and capturing data in real time, then processed the results afterward. Observing physics in real weightlessness, convection stopping, fluids floating free, forces behaving differently, was unlike anything a ground lab can offer.

// LAB

The Experiments

DETAILED WRITE-UPS LINKED ON EACH CARD · IN FRENCH

01

Vortex

How a maelstrom forms, and what happens to a vortex when gravity is taken away.

READ THE WRITE-UP
02

Thermodynamics

Hot rises and cold sinks on Earth. Testing whether natural convection survives in weightlessness.

READ THE WRITE-UP
03

Centrifuge

Spinning to create artificial gravity, a building block for long-duration space travel.

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04

Miscibility & Decantation

How immiscible liquids separate, or refuse to, when there is no gravity to drive decantation.

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05

Dye Diffusion

Watching a dye spread to isolate pure molecular diffusion from gravity-driven mixing.

READ THE WRITE-UP
06

Newton's 3rd Law

The Mentos-and-soda geyser as a clean demonstration of action and reaction.

READ THE WRITE-UP
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Outcome

The campaign was a success. All six experiments ran as planned across the flight, and we collected clean data from each parabola. Seeing the predictions hold in real weightlessness, after a year of design, building, and CNES reviews, made every late night worth it. The campaign earned two of our students a flight aboard the CNES Zero-G aircraft and positioned the club for two consecutive Young Searchers Prize victories in the years that followed. It remains one of the most formative engineering and leadership experiences of my career so far.