REPORT

2023 Summer Semester Flying Robot Project Team A Article 6June 28, 2023

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This week, the group continued to work on the main wings and stabilisers as per usual. The members in charge of the main wings focused on creating the ailerons, while the rest of the team applied some finishing touches to the horizontal and vertical stabilisers. The manufacturing process of the ailerons were very similar to that of the main wings, whereby laser-cut aerofoils were superglued to a thin sheet of balsa wood at predetermined intervals, and a stick of balsa wood was glued along the leading edge of the aileron for added structural support. As no hinges were made for the ailerons, it was decided that they would either be taped or sewn onto the main wings.

Last week, significant weaknesses had been identified in the central support structures that connect the main wings to the fuselage, which could lead to catastrophic mechanical failure. To address this issue, the team brainstormed several options to improve the structural stability and durability of the aircraft, such as using suspension cables for extra support, making the central supports out of stronger material and improving the overall structural design of the supports, among others. The team had ultimately opted for improving the design and material quality of the central support structures.

Additional design flaws in the ailerons and stabilisers were pointed out by faculty and TAs, which the team decided to address at a later stage as most of the fixes could be retrofitted relatively easily. Some of the members decided to meetup again later in the week to finish off assembling the ailerons and to cut out the redesigned central support structures.

Work on the wheels, the battery and servo motor holders, and wiring will commence next week. The team is hoping to have most of the work done by the first flight test. 今週も引き続き主翼と尾翼の作業を進めました。主翼の担当班はエルロン制作に集中し、その他のメンバーは水平尾翼と垂直尾翼の仕上げを行いました。エルロンの製造工程は、主翼の製造工程とよく似ており、レーザーカットされた翼型を薄いバルサ材に所定の間隔で接着し、エルロンの前縁に沿ってバルサの柱を接着して構造的な支えを追加しました。エルロンにはヒンジがないため、主翼にテープで固定するか縫い付けることにしました。

先週、主翼と胴体をつなぐ中央支持構造に致命的な機械的故障を招きかねない弱点があることが判明しました。この問題に対処するため、機体の構造的な安定性と耐久性を向上させるためのいくつかの選択肢について議論しました。たとえば、サスペンション・ケーブルを用いた補強、より強い素材での支持構造作成、支持構造の全体的な構造設計の改善などを検討し、最終的に、設計と材質の改善を選択しました。

エルロンと尾翼の設計上の欠陥が教員やTAから追加で指摘されましたが、ほとんどの修正は比較的簡単に後付けできるため、後の段階で対処することにしました。メンバーの何人かは、エルロンの組み立てと再設計された中央支持構造を切り出すために週の後半に再び集まることにしました。

車輪、バッテリーとサーボのホルダーの制作と取りつけ、配線などの作業は来週から開始する予定です。最初のフライトテストまでにほとんどの作業を終わらせたいと考えています。

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