Robinson R66 (merged threads)
Join Date: Nov 2007
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Hmmm, I am not sure if Robinson will present the R66 to the public like this.
My guess is that they just test the turbine in an modified R44.
I don't think that is the R66, Frank is smarter than that.
My guess is that they just test the turbine in an modified R44.
I don't think that is the R66, Frank is smarter than that.
Join Date: Sep 2003
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geeee..........will have to hire a crane to look at the head on a daily!!
im presuming the corrosoin issues on the tailboom will be adressed on this model
Weve operated robos for 10+ years and goto say "F@#K what an ugly machine"......that of course if the latest pic is anything to go by!
im presuming the corrosoin issues on the tailboom will be adressed on this model
Weve operated robos for 10+ years and goto say "F@#K what an ugly machine"......that of course if the latest pic is anything to go by!
Join Date: Nov 2001
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Its payback time for all you Robbie pilots that slated Enstroms for being ugly.
A thing of beauty is a joy forever
Is the world ready for another cobbled together turbine?
A thing of beauty is a joy forever
Is the world ready for another cobbled together turbine?
Join Date: Jul 2002
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I can only imagine - or perhaps hope - that somewhere in the Robinson Factory, someone's having a really good laugh at the comments here......
Of course, if it would cost money to put together a prank that size, and we know how Frank feels about spending money on frivolities..........
Of course, if it would cost money to put together a prank that size, and we know how Frank feels about spending money on frivolities..........
Blimey, I honestly cannot believe Frank is basing it on the R44. Don't get me wrong, I have been flying Robinson's for 8 years but there is so many things that could be improved on, he needs to get a design team in to make his new chopper, not draw it on the back of a pack of smokes whilst on the phone!
Where do you stow the cherry picker for checking the head?
Where do you stow the cherry picker for checking the head?
Join Date: Nov 2004
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That's good news! Since Frank Robinson brought cost effective helicopters into the world, for folks like myself, i can only wish the R66 development team good luck. I'm sure when the initial R44 powertrain prototype becomes an actual R66 prototype the designers will have a good looking machine to keep everyone happy. Some styling concepts probably already exist.
Interesting to see the mast extension. The longer moment arm should reduce the cyclic response time constant, although it will also reduce dynamic stability from increased flapback for pitch/roll attitude change. I gather SCAS will be standard. I suspect the reason is to improve controlability in reduced g manouvres, to keep the machine competetive in a market place moving towards hingeless rotors.
Keep up the good work RHC...
Interesting to see the mast extension. The longer moment arm should reduce the cyclic response time constant, although it will also reduce dynamic stability from increased flapback for pitch/roll attitude change. I gather SCAS will be standard. I suspect the reason is to improve controlability in reduced g manouvres, to keep the machine competetive in a market place moving towards hingeless rotors.
Keep up the good work RHC...
Last edited by Graviman; 31st Dec 2007 at 10:51. Reason: Rewrite to explain mast extension reasoning better. This has taken several attemps...
Cool as a moosp
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In no way am I a helicopter designer, but looking at the jet efflux thrust line, I assume it was necessary to raise the rotor to get the rotor forward thrust line in balance with the jet efflux.
If you kept the current R44 head height the jet efflux looks as though it would cause a pitch up moment which would require too much forward collective to make a viable machine.
This may be complete b***t so I seek the expert advice of the pprune design team out there.
If you kept the current R44 head height the jet efflux looks as though it would cause a pitch up moment which would require too much forward collective to make a viable machine.
This may be complete b***t so I seek the expert advice of the pprune design team out there.
Join Date: Nov 2004
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Originally Posted by moosp
...I seek the expert advice of the pprune design team...
I think it's just to try and keep the machine competetive against machines like EC120, without the cost of a bearingless 3-blade rotor. It just keeps a good moment arm above the CG.
net gain?
Maintenance and pre-start checks noted, is there a net gain in safety due to added clearance of the blades?
Less chance of the rotor injuring passengers or striking the cabin in an accident?
Mickjoebill
Less chance of the rotor injuring passengers or striking the cabin in an accident?
Mickjoebill
Better red than ...
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There is a cable taped down the front of the mast so it could be a "chadwickomiter" or similiar measuring device.
CDT
CDT