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Electric motor assisted super- or turbocharger? by
Max Kallio
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...
( 1 2)
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Kamov folding helicopter? by
Mr.Twistair
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...
( 1 2)
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October 29th 03 12:19 PM
by PW
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Open letter to Sikorsky by
Dave Jackson
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...
( 1 2)
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12 |
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Helicycle by
Stu Fields
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...
( 1 2)
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Victimizing Aircraft Designers - An American Specialty? (wasFetters) by
Dennis Fetters
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...
( 1 2)
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Clean up news group by
[email protected]
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!
( 1 2)
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12 |
4,545 |
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Rotor Balancing by
Stuart & Kathryn Fields
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...
( 1 2)
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April 16th 08 10:52 PM
by JohnO
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control failure by
Stuart & Kathryn Fields
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" ...
( 1 2)
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12 |
3,008 |
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Is this for real? by
JohnO
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.
( 1 2)
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Heli-Chair helicopter flight training device by
Heli-Chair
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...
( 1 2)
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Too much fun.. almost.. by
Steve R.
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...
( 1 2)
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schwiezer 300 aerobatic video ?? by
jad
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...
( 1 2)
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September 14th 04 11:17 AM
by Beav
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1,448 |
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mast bumping r22 questions by
PJ Hunt
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...
( 1 2)
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12 |
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New Robinson R66?? by
Eric D
Anyone seen or heard anything on the new six place Robinson? I
understand it will be Turbine powered.
( 1 2)
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12 |
1,377 |
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Ground 350 run without blades? by
Sla#s
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...
( 1 2)
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February 18th 04 05:36 PM
by Sla#s
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3,564 |
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Flying at night.... by
SHIVER ME TIMBERS
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...
( 1 2)
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11 |
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More Failed Autos Coming Soon..... by
Ol Shy & Bashful
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...
( 1 2)
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April 24th 06 10:28 PM
by Don W
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Dumb Question by
JohnO
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...
( 1 2)
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December 24th 06 06:46 PM
by Linc
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Scorpion 133 by
ABS
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
( 1 2)
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Rec License Requirement Question by
[email protected]
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...
( 1 2)
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