2003年，祐祥載重100公斤的 CDS『共軸無人直升機 』在台中『漢翔公司』協助下，在漢翔園區起飛！

  

Why Coaxial Helicopter designs?

Yoshine CDS：Coaxial Drive Systems

In 2003, the world's first "unmanned" coaxial helicopter with a payload up to 100kg was successfully developed and lift off in Taichung, Taiwan, by YOSHINE HELICOPTERS using a patented "CDS" technology!

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"Helicopters for Everybody" 全民直升機夢

今天，開直升機上下班，仍然是1950年代的美國夢

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Understanding the COUNTER-ROTATING Coaxial Rotor Design

Coaxial rotor designs have been used on military helicopters for the better since last 75 years. 

A coaxial rotor eliminates the need for a tail rotor and creates a safer, more stable machine.  To understand how coaxial design outperforms other helicopters, let's examine the physics.

The physics of helicopters

For single-rotor helicopters, lift is generated through the main rotor rotating. This rotation generates torque about the main helicopter, causing the main fuselage to spin around in the opposite direction.

Early engineers designed the tail rotor to counter this torque and keep helicopters stable. Tail rotors are generally much smaller rotors mounted on a perpendicular axis to the main rotor.

By controlling the speed of the tail rotor, the pilot can stabilize the craft as well as control the direction of the helicopter.

Slowing the tail rotor would cause the helicopter body to rotate in the opposite direction of the main rotor due to excess torque in that direction.

Speeding up the tail rotor would do the opposite. Along with direction, helicopter pilots can control the yaw of the craft by adjusting the angle of the tail rotor. By pitching the tail rotor slightly up or down, the pilot creates a moment arm through the helicopter, which in turn adjusts the yaw of the craft.

Why a coaxial helicopters design?

  

2003 CDS Shown at Duxford UK Helitech 2003
英國展出 創造了歷史 

2005年，美國的PM科技雜誌報導： “EZYCOPTER” by Yoshine Helicopters of Taiwan 為全球第一架「無尾旋翼」個人休閒運動共軸直升機，未來也將有作為「國防軍事」載具用途的發展潛力：

CDS 解決了直升機「反扭力」問題，提供直升機『自動平衡』或『自動排檔』的能力！

2004年全球第一架 “CDS” 技術研製成功

傳統直升機《手排》飛控方式 /vs./ 共軸直升機《自排》解決方案

牛頓定律：任何動力都有一個『力量相等/方向相反』的反作用力。 

【CDS】傳動系統讓直升機起飛時，扭力自動平衡，將平衡『自動化』，解決了「扭力平衡」問題！

用【CDS】研製直升機就像用『CPU』研製電腦一樣，創意可以無窮，商機可以無限。。。。。

世界已有多國採用【CDS】，研製「救護及消防」直升機，陸軍軍校。。則可用於教學。。。。

新一代的波音、斯考斯基等的『軍用直升機』也是採用【CDS】概念。

2006年全球第一架應用CDS技轉研製的『救護直升機』在『巴黎航空展』亮相！

 "CDS"：新一代無扭力直升機的飛控系統 專業廠商

瑞士 直升機試飛飛行員（上左） / 韓國直升機客戶（上右）