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04-04-2009 12:34 AM  9 years agoPost 1
VooDooXrrElite Veteran - San Francisco Bay Area CA, US (San Mateo) - My Posts: All  Forum  Topic

ehh i just got an idea why not vent the cooling air from the fan shroud when you enter left cyclic it blows air left and right when you enter right cyclic wouldnt this produce some sweet spin rates and maybe a sweet high rotation stall? of course the air would be fully ducted instead of a half ductand higher airflow fan would be used but should help alot in 3d maneuvers

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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04-04-2009 12:41 AM  9 years agoPost 2
Wingman77

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Pulaski Tennessee

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you would have to have a lot more serious fan than any heli out there now has.

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04-04-2009 12:42 AM  9 years agoPost 3
VooDooX

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San Francisco Bay Area CA, US (San Mateo)

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maybe install a ducted fan engine from an edf jet at the bottom? would help both engine cooling AND spin rate? we are talkign for hanger queens here not everyones heli so everyone knows

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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04-04-2009 12:44 AM  9 years agoPost 4
GyroFreak

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Orlando Florida ...28N 81W

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Their is a helicopter (full size) that uses its turbine exhaust out the tail with a pivoting duct to control the tail, no tail blades.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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04-04-2009 12:45 AM  9 years agoPost 5
VooDooX

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San Francisco Bay Area CA, US (San Mateo)

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not for tail for lef tand right banking and using only a small modification like adding an edf and a servo/deflector

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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04-04-2009 12:50 AM  9 years agoPost 6
TaleGunner

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Deer Park WA

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In my opinion the added weight would more than negate any flight improvment

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-04-2009 12:54 AM  9 years agoPost 7
VooDooX

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San Francisco Bay Area CA, US (San Mateo)

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the added weight of an edf fan and a servo and a deflector + generator to power it is what the weight of a full header tank? and would increase spin rates alot i think like having an edf jet pushing your helis bottom helping it turn we could also mix front and back while were at it but that would be more work

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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04-04-2009 12:58 AM  9 years agoPost 8
MartyH

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USA

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There isn't enough volume or velocity from the cooling fan to do anything with it.

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04-04-2009 01:00 AM  9 years agoPost 9
VooDooX

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San Francisco Bay Area CA, US (San Mateo)

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note i said later add an edf to it

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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04-04-2009 01:33 AM  9 years agoPost 10
TaleGunner

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Deer Park WA

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All ideas need to be tested to prove viability.
Please feel free to test away you might be onto the next great item.

even though I personally don't think it will work I didn't think the NOTAR would work ether Full size
http://video.google.com/videoplay?d...506091298356948
RC NOTAR

Watch at YouTube

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-04-2009 01:46 AM  9 years agoPost 11
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Hey tailgunner, how did they get enough air out of that tail to counter act the torque in that RC model.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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04-04-2009 01:51 AM  9 years agoPost 12
gian

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AZ

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A NOTAR is much more than exhaust being blown down the tail. see:
http://en.wikipedia.org/wiki/Coand%C4%83_effect

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04-04-2009 02:21 AM  9 years agoPost 13
TaleGunner

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Deer Park WA

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I don't know how it was done on that one, but there was an article in rc heli a few months back were a guy did one all electric and it had a separate ducted fan unit blowing down the tail.
there was a rotating nozzle at the end controlled by a gyro.

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-04-2009 02:53 AM  9 years agoPost 14
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Very interesting. Seems as the nozzle rotates to adjust for torque it would also cause some variations in lifting the tail. Guess its all in how you do the mix..

AHHH-SOOO, Tailgunner just answered my comment about rotating nozzle changing pitch attitude. See below...

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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04-04-2009 03:33 AM  9 years agoPost 15
TaleGunner

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Deer Park WA

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I found this tidbit maybe voodoos idea could do the same

NOTAR is an alternative method of yaw control on some helicopters - instead of a tail rotor to generate thrust, compressed air is blown out of the tail boom through movable slots.
These slots are controlled by the pilot's pedals in the same way as a tail rotor is used. To generate more thrust, the slots are opened to let out more air, and vice versa.

NOTAR helicopters respond to yaw control in exactly the same way as tail rotor models, but have a big safety advantage - tail rotors can be very hazardous while operating on or close to the ground and, in flight, a failing tail rotor will almost always result in a crash

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-04-2009 04:57 PM  9 years agoPost 16
SuperSixTwo

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Virginia City, NV ---USA

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Notars of full scale also use an airfoil shaped boom, that creates "lift" in the torque reaction direction.

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