Dzh dynamics, a group of young people creates a project to bring innovative satellites into space

DZH Dynamics is the name of a project formatted by a group of young people who aim to create a company related to the aerospace sector, more specifically in creating satellites to take into space.

They are aided by ESA (European Space Agency) and will participate in the Fly your thesis event, in which they will get on a plane that will be put into gravity 0 so they can test their satellite prototype.

I've spoken to them for more information, and we'll see that we'll hear about them quite a bit in the future.

What is DZH Dynamics? Who's in the back?

DZH Dynamics is a multicultural research group composed of Ph.D. and master's students, as well as young researchers who work passionately in the development of one of the first inertia-controlled satellites through mass distribution control.

The team has been working since 2019 on the development of the technology to finally test it under microgravity conditions.

Our aim is therefore to ensure, thanks to the dzhanibekov effect, that current satellites by distributing the masses inside it (all mechanisms, cables, etc.) manage to move around space without the need for any external assistance, such as thrusters, mechanical wheels, etc.)

The effect describes the following:

an astronaut in space takes a T-shaped crank and rotates it on its trunk, it begins to rotate, but suddenly changes and rotates 180o on its turning plane, so that it stays for a few moments and then returns to its position, and so on until the end of time.

That is why the objective is to be able to control that continuous and infinite movement that arises from the nature of objects in gravity 0 and make current satellites can benefit.

Why do satellites need to be improved? What problem do you currently have?

Satellites move using various shapes, there are so-called reaction wheels, which is a type of wheel used in a spacecraft to change their angular momentum. But the problem that arises here is that to move that wheel you need energy use, the improvement that is achieved thanks to our idea is that we will be able for example to increase the capabilities of a nano-satellite through a technology that consumes less energy, allow more powerful payloads for a given mission, that the fastest maneuvers are made because what the Dzhanibekov effect provides is that there is a twist stabilized by "nature", so there is no need to make continuous corrections.

In short, what we will improve will be the effectiveness of today's satellites, as they will consume less energy, be more effective in their maneuvers, and will be able to do new activities that they could not do before due to their limitations.

What kind of support have you received to move forward?

Currently, we have 3 initial sponsors ACATEC, MAXON, SENSING, who have provided us with essential materials for the future construction of the prototype and its facilities to be able to work with them.

In turn the support of several Universities and institutions such as ESA, Cern, RMIT University, Tokyo Metropolitan University, Politecnica University of Madrid, Carlos III of Madrid among others.

What are the challenges you have already overcome?

The development of a 3D prototype by computer has been our greatest achievement, which has been accepted by ESA (The European Space Agency), and now with the idea of increasing the maturity of the project, the DZH Dynamics team has been selected by the European Space Agency to participate in the Fly Your Thesis! program. In this program, we will have the opportunity to test the technology under microgravity conditions in the parabolic flight planned for October 2021 allowing them to increase the maturity level of the technology.

What's your business model?

The business model, once the prototype has been tested in gravity 0 and works, would be on the one hand to sell complete satellites or on the other hand to sell to companies in the aerospace sector the idea that by incorporating our system into their satellites, they will be able to reduce energy costs and ultimately make their satellites more efficient.

Are there a lot of people in the world doing something like that?

Currently, we are the only ones that thanks to the DZH effect, or theorem of the tennis racket, which is a 180-degree attitude change, fast, periodic, and absolutely customizable, which is obtained when the system is rotating around its intermediate axis of inertia. This effect can be used as a passive heat dissipation system or to make efficient attitude changes by combining them with the current technology of the reaction wheels.

Satellites that have full control of their mass distribution are intended to be the leading technology in space applications. Of all the benefits that this technology allows, the DZH effect is one of the most outstanding.

What are your next steps?

The first step will be to create the prototype physically and thus be able to test it in gravity 0, since that is where it will work, in space.

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