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Gravimav

Gravimav is an innovating method that will facilitate access to experimentation in a microgravity environment.

The first doubt that often comes up is…what is microgravity?

Microgravity is the condition in which people or objects appear to be weightless, in the absence of external forces acting on a body (mechanic, aerodynamic, thrust, etc.). When we talk about microgravity, it consists in eliminating any force acting on the experiment, allowing only gravity to act, so that the object is in constant free fall with exactly the acceleration of gravity.

However, the complete annulment would be weightlessness, and therefore the approximation, to a greater or lesser degree, to that concept is called microgravity.

The current methods to recreate this phenomenon are costly and do not have a high degree of repeatability. Besides, they require long waiting when conducting an experiment. Once approved, it may not be modified during the waiting time.  Examples of these methods are the parabolic flights, drop towers and small rockets.

What does Gravimav offer as an alternative?

Gravimav offers a drone that allows to recreate these conditions close to weightlessness, for a payload of approximately 10 kg and for a few seconds (most current methods have a similar duration).

Although there is a first prototype, we are currently working on a few aspects to improve its efficiency. These aspects are:

  • The drone’s aerodynamics.
  • Engines and propellers meeting the necessary requirements.
  • Selection of the most effective method to create the microgravity environment in the platform.
  • Disturbance reduction in microgravity conditions due to vibrations and other small external forces.

However, the experiment takes place in three basic phases:

  1. Drone’s ascent. A few alternatives are being considered, at a given height, to ensure the seconds of microgravity.
  2. Drone’s descent. The experiment suffers a constant acceleration close to gravity during the microgravity phase. The margin of error in the deviation between its acceleration and the gravity in a few orders of magnitude, to ensure valid results of the experiment’s conditions.
  3. Deployment of the parachute at a certain height to ensure the safe landing of the platform.

Thanks to this project, Gravimav will become an affordable and highly efficient solution as test platform for research centres, universities and spatial agencies that need to conduct this type of tests regularly.

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