REPORT

2023 Winter Semester Flying Robot Project Team C Article 3December 20, 2023

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This week, Team C installed the planks.
Last week, the cut-out ribs were fixed to the plans with masking tape, and spars were passed over and fixed to all four points on the top and bottom, front and back of the ribs, but at some of these points the ribs and spars were detached or misaligned, so this week this was the first thing to be corrected. The area to be fixed was first separated into ribs and spars using a cutter, then the ribs were sandwiched between rectangular pieces of steel and fixed so that they were perpendicular to the table. It was then fixed using super glue to ensure there was no misalignment.
After the modifications were made, we set about fitting the planks, and TA showed us how to do it. First, we made the upper plank. First, we prepared some balsa boards of 1 mm thickness, adjusted the length roughly, and attached them to the top of the spar with masking tape. Next, the balsa boards were moved and instant adhesive was applied to the area where the ribs meet the plank, then the balsa boards were bent along the ribs and glued together. Next, the bent planks and spars were glued together. This was done for the front part of the top face, the bent boards were glued together and the length of the boards was sanded to match the front spar and all glued together. After this work was done, the feet on the ribs were cut off and the surface was prepared with sandpaper before starting the process of attaching the planks to the reverse side. We proceeded in the same way as for the surface, but the time came when we had glued one balsa board.
In the next class time, the goal is to put up all the planks, cut out the ribs on the other side, line them up on the drawing, pass the spars over them, and fix them in place, but we will work as much as we can as the remaining time for making the planks is short and there are only three members in Group C. In this work, the planks were sometimes distorted, so we will be careful how we apply force to create them. "今週、C班はプランクの取り付けを行いました。
先週は切り出したリブを図面の上にマスキングテープで固定し、リブの上部と下部、前部と後部の４点について全てのリブについて桁を渡して固定したのですが、そのうちのいくつかの点でリブと桁が剥がれたり、ずれたりしていたため、今週はこれの修正を最初に行いました。修正する部分をまずカッターを使ってリブと桁に分離し、リブを直方体の鉄で挟んでテーブルと垂直になるように固定しました。その後瞬間接着剤を使ってズレがないように固定しました。
修正が終わった後、プランクの取り付けに取り掛かりました。TAさんにやり方を教えてもらいました。最初に上部のプランクを作りました。まず厚さが1mmのバルサ板を数枚用意して、おおまかに長さを調整し、桁の上にマスキングテープで貼り付けました。次にバルサ板を動かしてリブとプランクが接する部分に瞬間接着剤をつけ、バルサ板をリブに沿わせるようにして曲げて接着しました。次に曲げた板と桁を接着しました。これを上面前部について行い、曲げた板同士を接着し、板の長さを前部の桁に合うように紙やすりで削り全て接着しました。この作業が終わった後、リブにつけた足を切り取り、紙やすりで表面を整えてから裏面にプランクをつける作業を始めました。表面と同様に進めたのですが、バルサ板を一枚接着した状態で時間が来てしまいました。
次回の授業時間ではプランクをすべて張ることと、反対側のリブを切り出して図面の上に並べ桁を渡して固定することが目標ですが、残りの作成時間が短くまたC班は３人しかいないのでできる限り作業を進めていきます。今回の作業ではプランクが歪んでしまうことが発生したので、力のかけ方に注意して作成します。"

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