app-dat/RC-apps-dat/quadcopter-dat/quadcopter-dat.md
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@@ -4,6 +4,37 @@
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- [[Coreless-Motor-dat]] - [[motor-dat]]
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+
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+## Multirotor Drones (or Multirotor UAVs).
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+
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+Multirotor refers to any drone with multiple rotors (propellers) for lift and control.
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+
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+Subcategories include:
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+
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+Tricopter – 3 rotors
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+
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+Quadcopter – 4 rotors
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+
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+Hexacopter – 6 rotors
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+
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+Octocopter – 8 rotors
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+
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+
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+
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+
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+## Quadcopter vs Octocopter
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+
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+| Feature | Quadcopter | Octocopter |
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+| ------------------------------- | ------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------- |
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+| **Power & Payload** | Sufficient power for small drones; simple structure and lightweight; relatively low energy consumption | Higher thrust, can carry heavy cameras or sensors; multi-motor redundancy allows flight even if one or two motors fail |
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+| **Drawbacks** | Limited payload; less stable in high wind | High energy consumption; complex structure, heavier; higher requirements for takeoff and operation |
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+| **Stability & Wind Resistance** | Easy to control in low wind; agile and responsive | Strong wind resistance; multi-motor redundancy increases flight safety |
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+| **Drawbacks** | Weak wind resistance; prone to crash if one motor fails | Slightly slower response; less agile than quadcopter |
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+| **Cost & Maintenance** | Low cost; fewer motors and controllers, easier maintenance | High cost; complex maintenance, more motors prone to failure; higher battery requirements |
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+| **Typical Applications** | Recreational aerial photography, educational experiments, light surveillance | Professional aerial photography, industrial inspection, payload transport, rescue missions |
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+| **Summary** | Lightweight, flexible, low cost; suitable for recreational and light-duty tasks | Powerful, wind-resistant, heavy-lift capable; suitable for professional and industrial use |
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+
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+
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## opensource
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### cleanfight
app-dat/app-dat.md
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@@ -35,7 +35,7 @@
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## RC Electrified in the air
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-- [[ardupilot-dat]] - [[RC-dat]]
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+- [[RC-apps-dat]]
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- [[rover-dat]] - [[rc-car-dat]] - [[tank-dat]]
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- [[parachute-dat]] - [[rocket-dat]] - [[blimp-dat]]
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## RC lectrified on the ground
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-
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-- [[ardupilot-dat]] - [[RC-dat]]
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- [[rover-dat]] - [[RC-car-dat]] - [[RC-car-hack-dat]] - [[submarine-dat]] - [[RC-boat-dat]]
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app-dat/gun-dat/coilgun-dat/coilgun-dat.md
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+
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+# coilgun-dat
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+
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+== Gauss gun
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+
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+
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+
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+
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+
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+## ref
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+
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+- [[app]] - [[gun]] - [[coilgun]]
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\ No newline at end of file
app-dat/gun-dat/gun-dat.md
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+
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+# gun-dat
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+
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+- [[coilgun-dat]]
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\ No newline at end of file
mechanics-dat/mechanism-dat/mechanism-dat.md
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+
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+# mechanism-dat
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+
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+- level
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+
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+- [[trigger-dat]]
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+
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+
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+
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+
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+## ref
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+
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+- [[mechanism]]
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\ No newline at end of file
mechanics-dat/mechanism-dat/trigger-dat/trigger-dat.md
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+
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+# trigger-dat
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+
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+## ref
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+
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+- [[trigger]] - [[mechanism]] - [[mechanics]]
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\ No newline at end of file