Project-Based Learning プロジェクト ベースト ラーニング

What is PBL?

Project-Based Learning (PBL)

Project-based learning is offered in the “Flying Robot Project”, a part of “Creative Engineering Projects”. Junior and senior undergraduate students, as well as graduate students are welcome to join the project. An important goal of the project is to offer a chance to students to put in practice the knowledge they have gained in lectures to build and test their own aircraft. Following a PDCA (plan-do-check-act) cycle, the students analyze and solve an assignment, and validate their answer. During the aircraft building and flight test phases, the students work in teams, where discussions about the progress of each task helps the students develop their leadership, management and organizational skills.


Creative Engineering Projects (Undergraduate)

Creative Engineering Projects (Graduate)








Activities Reportactivities "Project-Based Learning" Report

  • July 24, 2019

    2019 Spring Semester Flying Robot Project Team E Article 9

    Hello, I'm K form team E.
    This time we made all the parts set.
    Picture shows the completed plane "SKHQ".
    At taxing test, we checked SKHQ could run straight.
    I was relieved because I personally made leg and wheel.
    It was rainy so we couldn't do flight test, but we checked the
    control surfaces.
    Right and left elevon linkage moved unbalance but was easily modifiable by controller setting.
    However, vertical wings rudder trouble was difficult to solve.
    This trouble was rudder control was not effective because the link between servo and rudder was not good.
    Reason of this trouble was that wire used for connection servo and rudder couldn't stand bending load.
    Best method was set link system to protect wire from bending but we didn't design main wing with extra space,
    so, this method was difficult to do.
    We may change our mind and do not set rudder.
    Plane can fly without rudder we know this is very extreme theory.
    Anyway, next is flight test.
    To tell the truth this blog was written one week later because I forgot writing
    Sorry for late.
    Flight test results will be show next blog!!

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  • July 24, 2019

    2019 Spring Semester Flying Robot Project Team E Article 10

    We conducted our first flight test for our plane. We were excited that we will finally were able to see our work take to the skies... but unfortunately, the best we could achieve today was a few "hops" during taxiing, despite our best efforts to lift the plane with the eleovons. There are a several likely causes for the problem, the largest of which are the fact that the moment pushing the nose downwards are too strong, due to the aerodynamic forces and the center of gravity being at too front of the plane. There is also the fact that the front wheels are currently too unstable for gaining speed, and the point of force working on the elevons from the servos are placed at a bad place.
    We addressed all of the problems and challenged on the Second test flight on the 23th. This time, we managed to achieve a good stable flight. We crashed the plane a few times due to piloting error, but ended the day with no major damage except a broken propeller .It seemed that for airplanes with a high thrust to weight ratio, at this scale, the accuracy of the assembly is less important compared to the adjusting of Center of gravity and trims.
    Can’t wait for the next, last test flight day!

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  • July 17, 2019

    2019 Spring Semester Flying Robot Project Team B Article 10

    Last time we calculated the position of the center of gravity and attached the main winds and the tail to the fuselage. Our goal of this week's class was to put all remaining parts such as front wheels and all other electronic parts, and connect servomotor and ailerons, an elevator and a rudder with tight knots. In other words, we tried to bring our aircraft to completion.
    First, we attached front wheels in order to make it easy to attach other remaining parts. It was much more difficult to attach front wheels vertically to the body pole than my imagination. Then we attached electronic parts, and connected servomotors and the elevator and the rudder with yarn. We made the knots tight and tension was so strong. So, the elevator got under the tail when the elevator was controlled to move fast. To prevent this accident, thin balsa stick was attached to the edge of the tail wind. In the final, we could make the elevator and the rudder to move in quick response to input signals. Next, we tried to connect ailerons and servomotor. In order to connect them with knot, it is necessary to make hole in main winds. We found short tubes and used it for the pass of yarns. Finally, we could make the ailerons to move quickly. All the stages of work were finished. We are looking forward to let our aircraft fly.

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  • July 10, 2019

    2019 Spring Semester Flying Robot Project Team D Article 12

    Today, our team continued to produce the drone part.
    The size of the drone was a relatively large with 70 cm square, so the wiring had to be longer than that of the initial specification. Therefore, we extended the cable in the same way as last week. And finally, the wiring part was completed. Next, we assembled carbon pipes to make a drone frame, and in order to connect the carbon pipes in the corners of the square, we constructed the parts of plywood. And we planned to use 4 carbon pipes assembled in a square shape and 1 through the center. But considering the propeller stability, we decided to use two more carbon pipes for the diagonal of the square. In addition, the drone needs feet when landing, so we cut the excess carbon pipes and made some holes on the plywoods to attach them.
    Next week, the drone will be completed. We hope it flies without any problems.

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  • July 10, 2019

    2019 Spring Semester Flying Robot Project Team F Article 11

    We held a regular meeting for flying robot and did three main works on July 10th. The first is assembly of the body to the device of shifting the weight. The second is assembly of the body to the main wing and connection of each conductor cable. The third is check of the position for setting servos and fix of them.
    At the last meeting, the body and the servo of the device were broken up and divided into two parts because the fix between them was not enough to tense the thread of the devise. What we have done for the purpose of improving the fix is setting new boards on the servo and the body around their connection. These boards can extend the contact area between the body and the servo and can allow them to connect more strongly. After assembling them successfully, we checked whether the device can allow the flying robot to shit its weight by linking to controller and operating manually.
    When we assembled the body and the main wing, we first decided where to fix servos for an elevator and a rudder as checking each position. If we set servos on the wrong position, they prevent the device of shifting weight from moving successfully.
    What to do at the next meeting is to fix PixHawk in front of flying robot for shifting its weight forward, to calibrate PixHawk and check whether the flying robot can shift its own weight successfully and can lift up without a cover of the main wing and to put the cover on the main wing to adjust all controlling parameters.

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