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Search: Posts Made By: zeeoo
Showing results 1 to 35 of 158
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Forum: Rotorheads
9th Apr 2005, 18:42
Replies: 7
Views: 1,119
Posted By zeeoo

hi Shy, you need an ejection speed higher...

hi Shy,

you need an ejection speed higher than the blade speed.
IMO if you dilute the airflow on the trailing edge, you will loose efficiency, unles your compressor can provide enough air....
Forum: Rotorheads
7th Apr 2005, 22:28
Replies: 2
Views: 1,125
Posted By zeeoo

for shure it will return to sender : mother earth...

for shure it will return to sender : mother earth :D :D
is this your secret rotor , bug ? ;)
Forum: Rotorheads
28th Feb 2005, 23:12
Replies: 44
Views: 9,289
Posted By zeeoo

I vote for the kamov ka 50 , strong and ugly like...

I vote for the kamov ka 50 , strong and ugly like all russian bears :D
Forum: Rotorheads
28th Feb 2005, 08:31
Replies: 41
Views: 10,962
Posted By zeeoo

I hope he goes to Eurocopter.. the dreamteam......

I hope he goes to Eurocopter..
the dreamteam...
Nick come here, we have marvelous wine and wonderful women ;)
Forum: Rotorheads
27th Feb 2005, 12:55
Replies: 43
Views: 11,135
Posted By zeeoo

Does that mean that, for the most of you, the...

Does that mean that, for the most of you, the "old heavy" two bladed tetering rotors are better in autorotation ?
Thanks
Victor
Forum: Rotorheads
25th Feb 2005, 21:13
Replies: 745
Views: 106,881
Posted By zeeoo

WG, yes, i think that there's fiinally no...

WG,
yes, i think that there's fiinally no reason for B or his management to argue on such serious things on this kind of forum .. this is not a court , no one is forced to witness or sware......
Forum: Rotorheads
25th Feb 2005, 20:23
Replies: 745
Views: 106,881
Posted By zeeoo

Wg, thanks for the advice, yes i sort the...

Wg,
thanks for the advice,
yes i sort the good seed from the trash...
from an exterior point of view, i clearly see here are personnal affairs here.. like at "ok corral" if you know what i mean.....
Forum: Rotorheads
25th Feb 2005, 19:34
Replies: 745
Views: 106,881
Posted By zeeoo

Hi i must admit theres a kind of very british...

Hi
i must admit theres a kind of very british smog over this thread...
lack of communication, rumours, mud .... the truth is elsewhere....
I also readed that the responsible for the operation was...
Forum: Rotorheads
24th Feb 2005, 15:39
Replies: 20
Views: 4,430
Posted By zeeoo

slow did you have a look at ROTREX...

slow
did you have a look at ROTREX superchargers ?
they use it, and explain it very wel BTW they manufature their planetary gears.
Forum: Rotorheads
21st Feb 2005, 18:11
Replies: 20
Views: 4,430
Posted By zeeoo

Hi Slow, i don't have a partiular knowledge...

Hi Slow,
i don't have a partiular knowledge about that but these guys may have :
www.rotrex.com
they use it for their gears.

Victor
Forum: Rotorheads
18th Feb 2005, 21:58
Replies: 11
Views: 1,622
Posted By zeeoo

Hi Cran, bug, dave Cran you are very right. ...

Hi Cran, bug, dave

Cran you are very right.
Bug : if you want to deposit a patend or an idea, just send it under a stamped envelope to a lawyer and ask him to keep it.

I france we have a good...
Forum: Rotorheads
18th Feb 2005, 21:28
Replies: 745
Views: 106,881
Posted By zeeoo

Hi, such personnal attacks are really short...

Hi,
such personnal attacks are really short sight.
I don't know a word of the story but i couldn't accuse someone publicly without a single evidence knowing what are the possible consequences of...
Forum: Rotorheads
11th Feb 2005, 08:58
Replies: 83
Views: 22,358
Posted By zeeoo

mmm It looks like it's a special new helicopter...

mmm It looks like it's a special new helicopter for "apple" watch and big pepperoni pizza delivery :D :D
Forum: Rotorheads
9th Feb 2005, 11:40
Replies: 83
Views: 22,358
Posted By zeeoo

I think that's a new prototype for a flying...

I think that's a new prototype for a flying shower-cabin :D
Forum: Rotorheads
8th Feb 2005, 17:35
Replies: 43
Views: 11,135
Posted By zeeoo

From Xavier Averso himself : this rotor was...

From Xavier Averso himself :
this rotor was not for a gyro use, it was a special order fom a customer.
he took 3 shortened blades (2.80m) he put on a tri-bladed hub some guys were doing, this hub...
Forum: Rotorheads
8th Feb 2005, 10:02
Replies: 43
Views: 11,135
Posted By zeeoo

I think doleac didnt do any tri-bladed, the...

I think doleac didnt do any tri-bladed, the airframe is a averso guepard but i may be wrong.
Forum: Rotorheads
8th Feb 2005, 00:04
Replies: 43
Views: 11,135
Posted By zeeoo

a pic is better with some details

a pic is better with some details
Forum: Rotorheads
7th Feb 2005, 21:45
Replies: 43
Views: 11,135
Posted By zeeoo

Bug, good comparison, may i ad that the quad...

Bug,
good comparison, may i ad that the quad market is very healthy and that their usage is far beyond the simple recreationnal : all-terrain patrols, beach watch and rescue, wildlife watch, small...
Forum: Rotorheads
7th Feb 2005, 20:40
Replies: 43
Views: 11,135
Posted By zeeoo

Dave_Jackson, I'v been told about this...

Dave_Jackson,

I'v been told about this limitation. But i don't plan to market something at the moment. XWe have not this limitation in france and europe.
BTW, a rumour says that Ermie Boyette...
Forum: Rotorheads
7th Feb 2005, 18:24
Replies: 43
Views: 11,135
Posted By zeeoo

Slow rotor : your system has interest, but the...

Slow rotor :
your system has interest, but the way to produce high pressure water jets may be heavier than high pressure air, the water leaks may quickly degrade the rotor mechanism.. air leaks...
Forum: Rotorheads
7th Feb 2005, 17:47
Replies: 43
Views: 11,135
Posted By zeeoo

Slow rotor, my numbers for the Djinn are an...

Slow rotor,
my numbers for the Djinn are an airflow of 1.1Kgs/sec.
A turbocharger like the garrett GT40 can provide 1kg/sec at 2.5 bars. Another example is the ROTREX superchargers, the bigger can...
Forum: Rotorheads
7th Feb 2005, 15:00
Replies: 43
Views: 11,135
Posted By zeeoo

Slow rotor, off this topic, the djinn had a 11...

Slow rotor,
off this topic, the djinn had a 11 m diameter rotor, 350 kg empty weight and was designed in the 60's.
just for numbers, do you know what would be the airflow needed to spin a 8 m...
Forum: Rotorheads
7th Feb 2005, 05:16
Replies: 43
Views: 11,135
Posted By zeeoo

Hi Slow rotor, the weight helps to regain...

Hi Slow rotor,

the weight helps to regain speed but degrades the finesse.
the best glide ratio is designed at a certain speed/weight/centering.

Talking about tip jet helicopters, the diffrene...
Forum: Rotorheads
6th Feb 2005, 23:22
Replies: 43
Views: 11,135
Posted By zeeoo

Dave, you know what i am developing. i posted...

Dave,
you know what i am developing.
i posted a 3D view here .
It is a simple gyrocopter, one seat. the mission of a such aircraft is simple to understand : low speed flight at human breath level,...
Forum: Rotorheads
6th Feb 2005, 19:57
Replies: 43
Views: 11,135
Posted By zeeoo

Nick, your answer makes sense to me. let me...

Nick,
your answer makes sense to me.
let me explain : i may be a litle too concerned by the "airfoil" thing since i've always read all the critical studies stating that the airfoil is "THE" holly...
Forum: Rotorheads
6th Feb 2005, 15:44
Replies: 43
Views: 11,135
Posted By zeeoo

Thanks Dave, Nick an others. Nick, thanks...

Thanks Dave, Nick an others.

Nick, thanks for the detailed explanation.
I see the inertia reserve and low disk load is, as you confirm it, the most important factors.

But these factors,...
Forum: Rotorheads
6th Feb 2005, 01:05
Replies: 43
Views: 11,135
Posted By zeeoo

what is the best helicopter in autorotation

Hi Gents, in your opinion, what is the best helicopter in autorotation, and why ? (or the worse and why)
Thank you.
Forum: Rotorheads
2nd Feb 2005, 20:41
Replies: 130
Views: 44,747
Posted By zeeoo

Dave, i have read the Kaman story about that,...

Dave,
i have read the Kaman story about that, do you mean she was soloed after 2 hours ? Can you solo every housewife after 2 hours ? it would be so nice.


"If the pure gyrocopter was...
Forum: Rotorheads
2nd Feb 2005, 17:30
Replies: 130
Views: 44,747
Posted By zeeoo

Artist, you forgot to quote the previous...

Artist,
you forgot to quote the previous sentence :
"A few months later this gyro-copter and its owner came to fatal termination performing some manoeuvre outside of its ill-defined flight...
Forum: Rotorheads
2nd Feb 2005, 11:29
Replies: 130
Views: 44,747
Posted By zeeoo

a BO108, i don't know.... a kind of something...

a BO108, i don't know.... a kind of something flying maybe ? or a kind of secret codename ?

comparing apples with apples : what were the real last "mass-production" gyros ? la cierva ? lioret ?,...
Forum: Rotorheads
1st Feb 2005, 20:58
Replies: 130
Views: 44,747
Posted By zeeoo

Dave, this idea has one merit : it came from your...

Dave, this idea has one merit : it came from your brain :D
i cant comment that idea.... but i'm curious to see how it could be usefull.
Forum: Rotorheads
31st Jan 2005, 08:12
Replies: 39
Views: 6,573
Posted By zeeoo

jCRAN, your advise is helpfull. i definitely...

jCRAN,
your advise is helpfull.
i definitely don't try to invent an Xblade. Just to add a little improvement with no risk. I want to enshure my choices won't lead to dramatic problems.
I will use...
Forum: Rotorheads
30th Jan 2005, 19:02
Replies: 39
Views: 6,573
Posted By zeeoo

JCRAN, that helps, like always, thank you. ...

JCRAN,
that helps, like always, thank you.

I was wondering is the use of a supercritical airfoil could be justified at the very tip of a blade, combined with a vortex fence (short anhedral).
...
Forum: Rotorheads
30th Jan 2005, 02:29
Replies: 39
Views: 6,573
Posted By zeeoo

Talking about my interest : autorotation i...

Talking about my interest : autorotation

i think that i won't bet on a laminar flow given the shape of the airflow when in autorotation :
http://www.aero.gla.ac.uk/Research/Fd/Project15.htm
...
Forum: Rotorheads
29th Jan 2005, 19:03
Replies: 39
Views: 6,573
Posted By zeeoo

Cran, as a pure newbie, what do you mean by 2D...

Cran,
as a pure newbie, what do you mean by 2D and 3D ?
thank you.
Showing results 1 to 35 of 158
 
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