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[信息] 疾速旋翼机介绍

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发表于 2015-2-4 15:01:52 | 显示全部楼层 |阅读模式
理查德介绍他的疾速旋翼机
疾速旋翼机可能是唯一的一款用涵道风扇做动力的旋翼机。疾速旋翼机是他自己设计建造开发的旋翼机,并在许多设计方面都很特特:主起落架悬挂设计,发动机监控仪表台,转子转速和飞行仪表,水平安定面,操纵杆,发动机安全测试机构。

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 楼主| 发表于 2015-2-4 15:02:28 | 显示全部楼层
Richard describes his Unicorn autogyro as follows:  
The UNICORN autogyro is the only autogyro, and possibly the only aircraft, in the world flying with a true ducted fan for propulsion.  
The UNICORN was designed and built in a homebuilder's environment. It turned out to be very special in many respects. First of all, it meets FAR103 requirements. At the same time, it posesses features normally reserved for heavy and expensive machines.  These features are:  
main landing gear suspension
nose wheel brake with parking lock
instrument console with engine monitors, rotor tach and flight instruments
pre-rotator
horizontal stabilizer
conventional control stick
fail-safe rotor shaft mountThe initial engine used was a 440 Kawasaki with 37hp. All flight testing was done with that engine.  
I am in the process of installing a 72hp McCulloch engine for real flying.  
From the March 1999 newsletter:  
Richard Sohn has enjoyed building and flying rotorcraft since he held a job in the German helicopter industry in the 1950s.  Richard built his first autogyro in 1956 and flew it until he crashed the autogyro in 1958.  Following the crash, Richard flew gliders until 1978 when he began high altitude hang gliding in the Alps.  Richard moved to the United States in 1979 and his glider flying was put on hold.  
In 1987, Richard made his first trip to Oshkosh and subsequently decided to build another autogyro.   Richard soon began work on his Unicorn autogyro and has been working on it ever since.  The design goal of the Unicorn project was to develop a legal ultralight with features normally found only on heavier aircraft. Landing gear suspension, brakes, and a prerotator were just three of such features. The Unicorn is currently flying with a Kawasaki 440 snowmobile engine, but Richard is working on a single cylinder wankel (rotary) engine for the future.  
The landing gear suspension is simply a fiber glass strut that flexes as a load is applied to it.  The braking system of the Unicorn consists of caliper brakes on the front wheel.  These brakes are used for taxi only.  

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 楼主| 发表于 2015-2-4 15:02:55 | 显示全部楼层
The prerotator is an original design of Richard's.  He crafted a drive wheel that presses against the engine flywheel when activated by a cable on the control stick.  This drive wheel engages the rotor drive gear which Richard prerotates to 200 rpm.  The rotor rpm guage is another original design fashioned from General Motors ignition parts.  

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In many ways, the Unicorn has been a test bed for Richard's other project, an XTC Amphibian that he bought a few years ago.  Richard has used the Unicorn autogyro to test and develop his ducted fan propulsion system which he hopes someday to mount on the XTC with the engine from a 1987 Mazda RX-7 Turbo.  The ducted fan system began with a hub from a high-speed industrial fan and Richard fabricated the shroud and fan blades from fiberglass.  The fan is driven through a belt reduction drive at 3700 rpm.

 楼主| 发表于 2015-2-4 15:03:28 | 显示全部楼层

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Richard says that the fan blades are the most difficult items to fabricate.  He has slowly perfected his technique and now fills his injection mold with randomly oriented glass fibers and longitudnal carbon fiber rods before injecting the epoxy resin.  This process produces very strong but lightweight fan blades that seem to hold up well under the high stress of the ducted fan system.  Richard is, however, considering a switch from epoxy resin to vinyl ester.  
  

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Richard Sohn truly personifies the "experimental" in Experimental Aircraft.  If any of this experimentation sounds interesting, stop by and visit Richard.  His airstrip is located about 8 miles north of Mossy Head and he monitors Crestview Unicom.  When you get into the pattern, give him a call on 122.9.  He says he'd love to have visitors anytime.  
  

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发表于 2015-2-4 19:03:54 | 显示全部楼层
很不错的--旋翼机。谢谢楼主。望你多上几张细节照片。
发表于 2015-2-20 04:54:14 | 显示全部楼层
写的真的很不错
发表于 2015-2-22 07:44:54 | 显示全部楼层
回个帖子,下班咯~
发表于 2015-2-24 01:23:25 | 显示全部楼层
纯粹路过,没任何兴趣,仅仅是看在老用户份上回复一下
发表于 2015-2-25 15:51:09 | 显示全部楼层
顶顶更健康
发表于 2015-3-4 03:25:47 | 显示全部楼层
不知该说些什么。。。。。。就是谢谢
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