2-stroke diesels need compressed air for starting the engine, so the turbo (exhaust driven centrifugal supercharger) is out of a guestion and it produces very little boost at low rpm anyhow. How about supplementing a centrifugal turbocharger with a high speed electric motor to create boost needed...

Joss, this heli is slightly described at http://twistairclub.narod.ru including photos of it's step-by-step unfolding. It wasn't ever flown. The main reason why is mostly explained as "no suitable engine which would fit this design that time". I've heard that it was designed to be powered by small...

Quote from ~ Flight International, Feb 8-14, 2005 "Sikorsky has decided not to bid for the US Army's Armed Reconnaissance Helicopter and the Light Utility Helicopter programmes and is instead looking further ahead. "With the business growing, we have the luxury to look at what is the next big...

Well, advancing age brings with it some clear thinking and some not so clear. I have purchased a Helicycle Kit and still own my Baby Belle. People with more than one helicopter that aren't in some commercial business are at least suspect. My wife is probably just patiently waiting for me to...

Poultry in Motion wrote: This is as clear as I can make it: "Ask Dennis to identify *the Mini-500 prototype* for you." Ok, ask me. What do you want to know about the "Mini-500 prototype". It was the first Mini-500 I built, so it was a prototype. What point are you trying to make? Please just...

Is there anyway to clean up this news group? We used to have some "rockstar" helicopter guys contributing! But as of the last few years the newsgroup has become a place for selling watches and complaining about instrument companies. I miss the useful information exchanged!

I just had a strange one. I have been balancing my rotor system using a DSS balancer where I would get the ips and phase angle measurements, turn the rotor to the angle with respect to the photo cell described by the phase angle information, then sight over the velocimeter and add weight to the...

aluminum control tube failed causing helicopter crash. The helo had an anodized aluminum control tube that failed in fatigue with less than 400hrs. The loading was low producing stresses in the area of 460psi. Discussions with anodizing folks say "Never anodize flight critical components" ...

Landing a heli on Everest at 29,035 ft? And it's a regular single turbine AS350???? http://www.eurocopterusa.com/Media/News/NewsDetail.asp?ID=329 I didn't think they could get that high, let alote hover or take off.

Just want to introduce my helicopter flight training device to the group. It is something that I created to teach myself how to fly a helicopter (which I sucessfully accomplished!) and now I have made a business out of it. Basically you sit in a chair with cyclic, torque pedals and a collective...

Wow, sounds like such a great day! Congrats Kevin! :-) Isn't it wonderful when everything comes together? Ok, so you had a sloppy one. The important part is that you reacted properly and didn't bend the bird. It's all part of the learning experience. Question: Maybe I'm reading you too...

Hi Guys, Im after a video link that was posted on this newsgroup sometime ago.. It was a long video (approx 30mb) of a Schwiezer/Hughes 300 doing aerobatic manouvers at low level at an airport! I remember it had a sound recording also including Robbie William :( Anyways, anyone know the link for...

So it's been almost a year now since the last post and I'm dying to know, What ever happened to this clown? PJ =================================== "Murphy's law" wrote in message ... Dennis Fetters...

Anyone seen or heard anything on the new six place Robinson? I understand it will be Turbine powered.

Has anyone ever run a AS 350 or 355 without the Main rotor blades fitted? We do it all the time with our 315 but I've never heard of it with a Squirrel / A Star. It would make tail rotor balancing a lot easier for a start - i.e. no pilot needed. That's what we do with our Lama and use to do with...

The OTHER Kevin in San Diego wrote: Flying the next few days in preparation for my checkride. I hope I do well... Well Kevin I havn't been around for a few months and have missed some of the episodes of your adventures in the air. When last I read, you were getting ready for the big solo...

Now that touchdown autorotations are no longer required or even demonstrated for CFI applicants, nor are FAA inspectors going to do them, is the general proficiency for autorotations going down the tubes by FAA mandate? I seeeee.......a new CFI isn't required to show any-ANY proficiency in a full...

When designing rotor systems, you have to keep the tip speed subsonic to prevent all sorts of problems and losses that would otherwise occur at the sound barrier, right? What about large turbofan engines such as on modern airliners? The fan tips must be travelling at many orders of magnitude...

Hi I am looking for cheap helicopters, on the web, and I like the little ugly Scorpion 133 So, I am curious, how they a to fly? And also compared to a Robinson 22? Regard Anker Denmark

Below is a quote from the FAR AIM Section 61.99 which lists the minimum "Aeronautical" experience required to get a REC Helicopter license. Notice that it never really says anything about helicopters. Paragraph (a)(2) and (b) are the only two that specifically say "in the aircraft for the rating...