NPU – A3 Cooperation Agreement

Prof. Dr. Yi Li

At the beginning of July 2019, a Cooperation Agreement was signed between the Adriatic Aerospace Association and the Northwestern Polytechnical University (NPU) School of Astronautics. The NPU is the most prestigious in astronautics in China with a wide spectrum of activities, which will be a great incentive for the development of the space program in the Republic of Croatia. On the side of the NPU, the Signatory of the Contract is Prof. Dr. Yi Li, Deputy Dean of the School of Astronautics, while on the A3 side the signatories where Prof. Dr. Sc. Slobodan Danko Bosanac, President A3, and Prof. Dr.-Ing. Ognjan Božić.

Hybrid propulsion – future micro-launchers

Hybrid rocket engines have the future and they are in the phase of intense research and development. Hon. Prof. Dr.-Ing. Ognjan Božić, an A3 member, led until this year  the DLR team that develops that aspect of rocket propulsion. The report on the work on the project has been published on the DLR website.

„In the spring of 2019, the innovative hybrid rocket engine “AHRES-B” was successfully tested on the test bench “block of four” at the German Aerospace Center (DLR) in Trauen. For the researchers a special reason to enjoy, because hybrid rocket engines are not only fundamentally cheaper and safer than conventional rocket engines, AHRES-B is also significantly more effective than all its predecessors. The current test has shown that the technological development of hybrid rocket engines is now well advanced enough to be used, for example, on sounding rockets.

The advantage: hybrid rocket engines are combinations of solid and liquid engines and combine the best features of both engine types. The liquid oxygen carrier – in this case highly concentrated hydrogen peroxide – and the solid fuel HTPB (hydroxyl-terminated polybutadiene) are initially separated in AHRES-B and only meet in the combustion chamber. As a result, there is no risk of explosion during storage and operation. In addition, the substances used are non-toxic and not harmful to the environment.“

Section for Space Technology at Mali Lošinj Re-socialization Center

Flying and reaching stars is one of the greatest incentives for imagination and creativity, and the “Space” is the key word that unites it. Encouraging creativity in the direction of space activities resulted in many successes in the exploration of Space as well as in the development of the material side of civilization. Initiative of A3 to establish Sections for Space Technology in Secondary Schools had precisely this ambition, to get students to know how some of their imaginations can be achieved. However, this initiative has also resulted in a completely different purpose, re-socializing children with problematic behavior. This direction of activity was noticed by Damir Preksavec, a teacher at the Mali Lošinj Resocialization Center (House), which has an internal vocational school under the auspices of Center of Education and has been operating since the foundation of the House in 1952, by establishing the Space Technology Section. Students, attendees of this school are children coming from all over Croatia.

According to Damir Preksavc, the Section for Space Technology helps his students in the process of re-socialization by teaching them competence in the field of mechanical engineering, electrical engineering, information technology and other topics.

The Section is regularly attended by ten students and we are aware that our students are not interested in scientific work. Therefore, we emphasized the practical work and so, for example, the student Philip Filipović made from the wooden materials the model of the F-16. The plane is under construction. Great creativity of the student was used when making the plane, which is definitely important for the development of space technologies.

About school
The school is an indispensable part of the program of re-socialization of children and adolescents with behavioral disorders, and provides opportunities for education of children from the local community, especially in programs that are not represented in high school “A. Haračića “in Mali Lošinj.

The school carries out a curriculum for secondary education for the following three years of occupation:
1. Field of mechanical engineering: turner, plumber, locksmith and tinsmith
2. Field of catering and tourism: chef and waiter
3. Woodworking: woodworking

and two-year occupations:
1. The field of mechanical engineering: machine and construction monter
2. Field of work catering and tourism: assistant chef and assistant waiter
3. Wood Processing Area: Flooring

We also conduct an adult education program for all of these professional occupations. A training program is also being carried out for the pursuit of a profession in the profession of welder. We also have a primary school that we are pursuing according to the adult education program.

In addition to the school itself, we also have workshops where students take the knowledge of the professions for which they are trained (lathes, locksmiths, welders and carpenters), students attending waiters and chefs participate daily in preparing and serving lunches for all users of the House.

First pictures from IECSat-2

Recently, Zoran Kahrić held a lecture on the development of NASA’s ICESat-2 satellite and here’s one of the first pictures we are publishing (thanks to Mr Kahrić).

The picture shows Bikini Atoll. The right figure shows where the laser beams went. In the left picture is beam # 2 (right line in color image); the surface of the sea (with waves) and the deep bottom can be seen. Then the bottom is raised, comes above the sea and begins the lagoon, which is shallow and no waves. At the end of the beam comes a reef that goes down to the surface and starts high waves again.

Visit to department of Aerospace Engineering at University of Applied Sciences Wiener Neustadt

The 7 members of the A3 team visited on the 9th of April 2018 department for Aerospace Engineering at Fachhochschule Wiener Neustadt. In the company of several members of the host team, led by Dr. Carsten Scharlemann, Head of the Department, discussion was about the technical details of the CubeSat development, their experience of the PEGASUS satellite launched last year, and the CLIMB CubeSat project, which will be the first in the world to use trusters to change orbit from circular into elliptical. After the discussion, which lasted for several hours, their labs were shown, satellite testing instruments and self-developed pulsed plasma truster and the vacuum chambers where it is tested. Finally, desire for closer cooperation was expressed between A3 and AE on several projects.

Founding Assembly

Founding Assembly of the Adriatic Aerospace Association was held at the Ruđer Bošković Institute on 18. December 2017. The Association was established by 30 founding members from research and academic institutions, schools of technology and high technology firms. In this way the Association acquires the status of legal entity as opposed to previous status when it was an assembly of members bonded by mutual consent agreement.

Micro Drones

The core mission of FLIR UAS is to develop, produce and sell the world’s smallest and most advanced Personal Reconnaissance System (PRS). Currently FLIR UAS creates innovative solutions for complex problems based on modern microelectronics, new sensor technology, creative mechanical design and cost-effective production. Also, it works closely with leading industry partners and broad customer bases to provide optimal and functional products that meet the needs of the operator. The latest achievement is the Black Hornet with nano sensors.

Design your personal drone

The new MIT system that came out of the Computer Science and Artificial Intelligence Laboratory (CSAIL) is the first to allow users to design, simulate, and build individually custom-made drones. Users can change the size, shape, and structure of their drone based on the specific needs for carrying capacity, price, flight time, battery consumption, and other factors.