Tohoku University Yashago Team
[CanSat name]
Mamoru-kun (Rover Type)
Member:Yoshikawa Takashi (Team leader), Kodama Masaaki, Shudo Shinichi, Ymasaki Ayato, Tsuchida Itsuro
[CanSat Introduction]
Our Laboratory has been lasting challenged to launch the Rover-type CanSat since 2002, and we are just fifth generation. So we name from" Yashago",which means fifth generation in Japanese.
[Originality and ingenuity]
A different point is parachute isolating mechanism greatly until last year. A parachute unfolds, and it is necessary for a parachute not to coil itself round Rover to start running after a landing. Therefore I decided to keep us away so that a parachute did not hang physically on Rover by using a fishing rod. A fishing rod and separation of a parachute separate then by burning off a fixed thread with Nichrome wire. Separation by Nichrome wire was not tried so far at our laboratory and I was naive and was able to reduce the weight hereby.
It is seen a shock of a landing that I cannot start running well next in an average year. It is necessary not to have an influence on motor parts by opening a parachute surely and a shock at that time in particular to evade this surely. Therefore I install the urethane-related hemisphere in the outside of each tire and evade influence to other parts because this part absorbs shock energy of a landing. In addition, I got up and made it possible to start running when I did falling sideways by this hemisphere.
In addition, I confirmed integrity of Rover by a vibration examination, parachute development by a fall experiment from a balloon and crash-worthiness as we do every year.
[achievements]
The launch was originally planed for only one time. The first launch was failed because of the trouble that the rocket's nose corn could not open and not release the Rover. We were most disappointed and mentally exhausted, but fortunately we were given the opportunity of the second launch. The second launch was on the second day which was a big windy day. The launch was succeeded. However our Rover swept away and landed about 7km far from the goal, it was lead straight to the goal by the good navigation system. Unfortunately, it stopped at 44m from the center of the goal because of the Rover's battery was dead. As a result, our team finished in second place.
[Impressions and problems]
The Rover could reach the goal area. But the Rover stopped around the goal because the battery had gotten empty. It's a pity. Except it, we regard this mission as successful. The reasons are shown below.
1 The Rover absorbed a shock in colliding against the ground.
2 We succeeded in separating the parachute from the Rover.
3 The Rover could run over wheel ruts.
4 The Rover ran almost straight toward the goal. The run distance was more than7 km.
We have some problems to get over. They are delaying deployment of a parachute for the Rover not to be swept away by wind, speeding up mobile speed and expanding wheels. So we hope that junior fellow will get over these problems and create a wonderful Rover with high ambition next year. You can do it. |
