add: update mechanical page #74

Author: Kingkouara

content/en/authors/KentaFutami/avatar.jpg

@@ -7,8 +7,8 @@ summary: "Our team is looking for sponsors."
 authors: [admin]
 tags: []
 categories: []
-date: 2020-06-24T12:34:23+09:00
-lastmod: 2020-06-24T12:34:23+09:00
+date: 2025-06-24T12:34:23+09:00
+lastmod: 2025-06-24T12:34:23+09:00
 featured: false
 draft: false
 
@@ -32,12 +32,12 @@ Therefore, we are constantly seeking sponsors.
 If you have any questions, please feel free to [contact us](../../#contact).  
 We are currently looking for sponsors through the end of **March 2026**.
 
-## Financial Sponsors
+## **Financial Sponsors**
 
 OUXT Polaris needs financial support to purchase robot components and cover transportation expenses.  
 We are looking for sponsors who can support us in this area.
 
-## In-Kind Sponsors
+## **In-Kind Sponsors**
 
 At OUXT Polaris, we are developing fully autonomous ships using a variety of technologies and products.  
 We will feature your products in blog posts tagged with your company name.  
@@ -47,7 +47,7 @@ If you are interested in supporting us, please feel free to [contact us](../../#
 
 ---
 
-## Sponsorship Tiers
+## **Sponsorship Tiers**
 
 |                                                                                                                          | **Gold Sponsor**                                                | **Silver Sponsor**         | **Bronze Sponsor**        |
 |--------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------|-----------------------------|---------------------------|
@@ -70,7 +70,7 @@ If you are interested in supporting us, please feel free to [contact us](../../#
 
 ---
 
-## Sample Sponsorship Returns
+## **Sample Sponsorship Returns**
 
 If you have any questions, feel free to [contact us](../../#contact).
 

content/en/pages/call-sponsor.md

@@ -0,0 +1,60 @@
++++
+title = ""
+date = 2026-01-12T00:00:00
+draft = false
+share = false
+commentable = false
+editable = false
++++
+
+## Hulls Design Improvements
+
+### Challenges and Reflections from RoboBoat 2025
+At RoboBoat 2025, our team experienced a frustrating result: our ASV capsized during autonomous navigation, preventing us from completing the tasks.
+The structural causes were mainly due to the following two points:
+
+*   **High Center of Gravity**: The center of gravity of the entire vessel was too high.
+*   **Instability of Hulls Shape**: The "curved high-rocker (banana-shaped)" pontoons we previously used lacked stability on the water surface.
+
+### Drastic Structural Improvements for 2026
+To prevent capsizing and ensure mission success, we have implemented the following structural changes for RoboBoat 2026:
+
+*   **Hulls Shape Change (Flat Bottom)**  
+    We moved away from the unstable banana shape and newly designed and adopted "flat-bottom" pontoons.
+*   **Lower Center of Gravity**  
+    We physically lowered the mounting position of the enclosure (waterproof case) housing electronic equipment to reset the center of gravity lower. Additionally, we designed the hulls to house batteries and motor drivers internally, achieving an even lower center of gravity.
+
+<div style="text-align: center; margin: 30px 0;">
+  <img src="/img/technical-work/placeholder1.jpg" alt="Hull comparison" style="max-width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
+  <p style="margin-top: 10px; font-style: italic; color: #666;">Fig 1. The top hull is our new one, and the bottom is the old design. The arrow indicates the cavity that holds the battery box.</p>
+</div>
+
+## Other Detailed Design and Implementation
+
+### Ensuring Airtightness and Wiring
+We redesigned the wiring path to connect the batteries and motor drivers inside the hull to the external electronics box.
+To pass the connectors through while maintaining airtightness, we adopted the following method:
+
+1.  Drilled holes in the hull for wiring.
+2.  Used Tupperware (sealed containers) to cover the holes and create an airtight compartment.
+3.  Used epoxy resin for bonding to achieve complete waterproofing and airtightness (see Fig 4).
+
+### Securing Connection Strength with the Frame
+For connecting the hulls and the frame, we used a method of fixing them with a dedicated jig at one central point on each hull.
+However, with a single-point fixation, there was a risk of the jig breaking due to moment loads (twisting and bending forces).
+Therefore, we created additional support parts extending from the frame to support both ends of the hulls (see Fig 5). This distributes the load and ensures a stable connection.
+The completed design fits within a compact size of less than 1 meter in both length and width.
+It can be easily carried by two people, significantly reducing the burden of transport and setup.
+
+<div style="display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-top: 30px;">
+  <div style="flex: 1; min-width: 300px; text-align: center;">
+    <img src="/img/technical-work/placeholder4.jpg" alt="Wiring and sealing detail" style="max-width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
+    <p style="margin-top: 10px; font-style: italic; color: #666;">Fig 4. Detail of the wiring and sealing using epoxy and tupperware.</p>
+  </div>
+  <div style="flex: 1; min-width: 300px; text-align: center;">
+    <img src="/img/technical-work/placeholder5.jpg" alt="Frame connection support" style="max-width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
+    <p style="margin-top: 10px; font-style: italic; color: #666;">Fig 5. Additional support structure.</p>
+  </div>
+</div>
+
+

content/en/reports/mechanical-report.md

@@ -13,14 +13,23 @@ Verification of manual operation functionality
 ## Results
 Operated extremely well. No issues with control in the surge and pitch directions. The aircraft was stable with no risk of capsizing.
 
-**Controller**: ○○
+Controller: Radiolink T8FB
 
 ## Video
-<div style="text-align: center; margin-top: 20px;">
-  <video controls style="max-width: 300px; width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
-    <source src="/img/technical-work/testing_video.mp4" type="video/mp4">
-    Your browser does not support the video tag.
-  </video>
+<div style="display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-top: 20px;">
+  <div style="flex: 1; min-width: 300px; text-align: center;">
+    <video controls style="max-width: 300px; width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
+      <source src="/img/technical-work/testing_video.mp4" type="video/mp4">
+      Your browser does not support the video tag.
+    </video>
+  </div>
+  <div style="flex: 1; min-width: 300px; text-align: center;">
+    <video controls style="width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
+      <source src="/img/technical-work/simulation_video.mp4" type="video/mp4">
+      Your browser does not support the video tag.
+    </video>
+    <p style="margin-top: 10px; font-style: italic; color: #666;">Simulation with Mission planner</p>
+  </div>
 </div>
 
 ## Next Steps

content/en/reports/testing-report.md

@@ -16,6 +16,6 @@ subtitle = ""
     <img src="/img/technical-work/current_technical_work.jpg" alt="Current Technical Work" class="img-fluid" style="border-radius: 8px;">
   </div>
   <div class="col-12 col-md-6">
-    <p>Our boat is the autonomous surface vehicle (ASV) for Robo Boat 2026! We've significantly upgraded both the hardware and software based on last year's experience!</p>
+    <p>Our boat is the autonomous surface vehicle (ASV) for RoboBoat 2026! We've significantly upgraded both the hardware and software based on last year's experience!</p>
   </div>
 </div>

content/en/technical-work/intro.md

@@ -12,53 +12,55 @@ subtitle = ""
 +++
 
 <div class="row">
-  <div class="col-12 col-md-4 mb-4">
+  <div class="col-12 col-md-6 col-lg-3 mb-4">
     <div class="card text-center h-100" style="border: none; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
       <div style="padding: 20px;">
         <img src="/img/technical-work/autonomy.jpg" class="card-img-top img-fluid" alt="Autonomy" style="max-height: 200px; object-fit: cover; border-radius: 4px;">
       </div>
       <div class="card-body">
         <h4 class="card-title" style="margin-bottom: 1rem;">Autonomy</h4>
-        <p class="card-text">Perception, localization, and planning systems for our ASV.</p>
+        <p class="card-text">Perception, localization, and planning systems for our ASV</p>
       </div>
     </div>
   </div>
 
-  <div class="col-12 col-md-4 mb-4">
+  <div class="col-12 col-md-6 col-lg-3 mb-4">
     <a href="https://ouxt-polaris.github.io/ouxt_automation/circuit/computer_sensor_board/computer_sensor_board/" target="_blank" rel="noopener" style="text-decoration: none; color: inherit;">
       <div class="card text-center h-100" style="border: none; box-shadow: 0 4px 8px rgba(0,0,0,0.1); transition: transform 0.2s;">
         <div style="padding: 20px;">
           <img src="/img/technical-work/electrical.png" class="card-img-top img-fluid" alt="Electrical" style="max-height: 200px; object-fit: cover; border-radius: 4px;">
         </div>
         <div class="card-body">
           <h4 class="card-title" style="margin-bottom: 1rem;">Electrical</h4>
-          <p class="card-text">Power distribution, sensing, and onboard electronics.</p>
+          <p class="card-text">Power distribution, onboard electronics</p>
         </div>
       </div>
     </a>
   </div>
 
-  <div class="col-12 col-md-4 mb-4">
-    <div class="card text-center h-100" style="border: none; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
-      <div style="padding: 20px;">
-        <img src="/img/technical-work/mechanical.jpg" class="card-img-top img-fluid" alt="Mechanical" style="max-height: 200px; object-fit: cover; border-radius: 4px;">
-      </div>
-      <div class="card-body">
-        <h4 class="card-title" style="margin-bottom: 1rem;">Mechanical</h4>
-        <p class="card-text">Hull design, propulsion integration, and mechanical systems.</p>
+  <div class="col-12 col-md-6 col-lg-3 mb-4">
+    <a href="/en/reports/mechanical-report" style="text-decoration: none; color: inherit;">
+      <div class="card text-center h-100" style="border: none; box-shadow: 0 4px 8px rgba(0,0,0,0.1); transition: transform 0.2s;">
+        <div style="padding: 20px;">
+          <img src="/img/technical-work/mechanical.jpg" class="card-img-top img-fluid" alt="Mechanical" style="max-height: 200px; object-fit: cover; border-radius: 4px;">
+        </div>
+        <div class="card-body">
+          <h4 class="card-title" style="margin-bottom: 1rem;">Mechanical</h4>
+          <p class="card-text">Hull design, mechanical systems</p>
+        </div>
       </div>
-    </div>
+    </a>
   </div>
 
-  <div class="col-12 col-md-4 mb-4">
-    <a href="/reports/testing-report" style="text-decoration: none; color: inherit;">
+  <div class="col-12 col-md-6 col-lg-3 mb-4">
+    <a href="/en/reports/testing-report" style="text-decoration: none; color: inherit;">
       <div class="card text-center h-100" style="border: none; box-shadow: 0 4px 8px rgba(0,0,0,0.1); transition: transform 0.2s;">
         <div style="padding: 20px;">
           <img src="/img/technical-work/testing.jpg" class="card-img-top img-fluid" alt="Testing" style="max-height: 200px; object-fit: cover; border-radius: 4px;">
         </div>
         <div class="card-body">
           <h4 class="card-title" style="margin-bottom: 1rem;">Testing</h4>
-          <p class="card-text">System integration, testing procedures, and validation.</p>
+          <p class="card-text">testing procedures, validation</p>
         </div>
       </div>
     </a>

content/en/technical-work/subteams.md

@@ -0,0 +1,60 @@
++++
+title = ""
+date = 2026-01-12T00:00:00
+draft = false
+share = false
+commentable = false
+editable = false
++++
+
+## 船体（ハル）の設計改良
+
+### 課題と反省 (RoboBoat 2025)
+RoboBoat 2025において、私たちは自律航行中の転覆によりタスクを完了できないという悔しい結果を経験しました。
+その構造的な原因は、主に以下の2点にありました。
+
+*   **重心の高さ**: 機体全体の重心位置が高すぎたこと。
+*   **船体形状の不安定さ**: 以前採用していた「湾曲したハイロッカー型（バナナ型）」のポンツーンは、水面での安定性に欠けていました。
+
+### 2026年に向けた構造の抜本的改良
+転覆を防ぎ、ミッションを確実に成功させるため、以下の構造変更を行いました。
+
+*   **船体形状の変更（フラットボトム化）**  
+    不安定だったバナナ型をやめ、底面が平らな「フラットボトム型」のポンツーンを新たに設計・採用しました。
+*   **低重心化（Low Center of Gravity）**  
+    電子機器を収めるエンクロージャー（防水ケース）の取り付け位置を物理的に下げ、重心を低く設定し直しました。また、ハル内部にバッテリーとモータドライバを収納できる設計にすることで、さらなる低重心化を実現しました。
+
+<div style="text-align: center; margin: 30px 0;">
+  <img src="/img/technical-work/placeholder1.jpg" alt="Hull comparison" style="max-width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
+  <p style="margin-top: 10px; font-style: italic; color: #666;">Fig 1. The top hull is our new one, and the bottom is the old design. The arrow indicates the cavity that holds the battery box.</p>
+</div>
+
+
+
+## その他の詳細設計と実装
+
+### 気密性と配線の確保
+ハル内部のバッテリーやモータードライバを、外部の電装ボックスと接続するための配線経路を再設計しました。
+コネクタを通し、かつ気密性を保つために、以下の手法を採用しています。
+
+1.  ハルに配線用の穴を開ける。
+2.  タッパー（密閉容器）を用いて穴を塞ぎ、気密区画を作成。
+3.  接着にはエポキシ樹脂を使用し、完全な防水・気密を実現（Fig 4参照）。
+
+### フレームとの接続強度の確保
+ハルとフレームの接続には、各ハルの中央1箇所に専用の治具を作成して固定する方法をとっています。
+しかし、1点固定ではモーメント荷重（ねじれや曲げの力）によって治具が破壊されるリスクがありました。
+そこで、フレームから伸びる支持パーツを追加作成し、ハルの両端を支える構造にしました（Fig 5参照）。これにより負荷を分散させ、安定した接続を実現しています。
+完成した機体は、縦横ともに1m未満のコンパクトなサイズに収まりました。
+2人で簡単に持ち運ぶことができ、運搬やセットアップの負担を大幅に軽減しています。
+
+<div style="display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-top: 30px;">
+  <div style="flex: 1; min-width: 300px; text-align: center;">
+    <img src="/img/technical-work/placeholder4.jpg" alt="Wiring and sealing detail" style="max-width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
+    <p style="margin-top: 10px; font-style: italic; color: #666;">Fig 4. Detail of the wiring and sealing using epoxy and tupperware.</p>
+  </div>
+  <div style="flex: 1; min-width: 300px; text-align: center;">
+    <img src="/img/technical-work/placeholder5.jpg" alt="Frame connection support" style="max-width: 100%; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);">
+    <p style="margin-top: 10px; font-style: italic; color: #666;">Fig 5. Additional support structure.</p>
+  </div>
+</div>