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HelicopterAerial Photography and Video › fiberglass blades
12-01-2007 06:10 AM  9 years agoPost 1
modifyit15

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Spartanburg, SC

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would you use them on your camera ship, if so how much weight could it hold on some fiberglass 680mm's

Fly 60% take heli home Fly 150% take parts home

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12-01-2007 01:32 PM  9 years agoPost 2
FCM

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Surrey, England

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The blade material is of less importance than the length, chord, section and weight. Glass blades are generally less stiff than graphite but that's about it really.

Paul.

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12-01-2007 01:49 PM  9 years agoPost 3
46Taylorcraft

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AZ

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the HI-Products 790mm blades that come on the JR GSR260 are fiberglass and I flew mine as heavy as 25lb

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12-01-2007 02:36 PM  9 years agoPost 4
rerazor

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Mich.

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Whats the best type of blade design for AP (chord, section, weight)?

It just seems that everyone is using 3D style blades, is that because of the fact that they are so stiff? What about FAI type blades that are designed for stability etc..??

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12-01-2007 03:20 PM  9 years agoPost 5
Hogster

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Surrey, UK

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I don't know much, but I do know that many people prefer symmetrical blades over semi-syms or flat-bottomed because they are less prone to creating translational lift in gusty wind ... the downside is their reduced lift when compared to flat-bottoms.

David

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12-01-2007 05:57 PM  9 years agoPost 6
kookboy

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Vancouver, BC

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I'm using two blades.

Vario flat bottom 690's that are CG weighted on the tips when it's not windy.

Rotortech Aeroflat symetrical 690's when the wind picks up.

The aeroflat's have a nice wide chord so I don't loose too much lift compared to the Vario's.

Jesse

... But honey it was only $$$

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12-01-2007 06:14 PM  9 years agoPost 7
Hogster

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Surrey, UK

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That's funny, I use two blades too! Would be slightly unbalanced with just one ...

Sorry, couldn't resist

David

PS. To make this an on-topic post, I'm using Razor Pro NHP 550s (fully-sym) and find them good, quiet performers

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12-01-2007 06:42 PM  9 years agoPost 8
wjw

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Cape Coral, Florida usa

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Yea, and I don't care for flat bottom blades or flat bottom woman

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12-01-2007 07:56 PM  9 years agoPost 9
rerazor

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Mich.

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I will always use full symmetrical blades. I was just thinking what aspects would be beneficial for AP.

For example why are stiff blades (3D) better for AP?

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12-02-2007 01:24 AM  9 years agoPost 10
kookboy

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Vancouver, BC

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I've only put a dozen flights on the flat bottom's, but there are two things they have going for them over the sym's I use.

Lift + longer flight times.

Jesse

... But honey it was only $$$

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12-02-2007 02:49 AM  9 years agoPost 11
rerazor

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Mich.

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This caught my attention about these blades:

<< GFC Main Blades 710 mm/12/4+5-white manufacturers description

The FAI/Standard blades are designed to maintain the manoeuvrability needed, but keeping the stability of the model for FAI exercises on high level. The full symmetric profile of the blade makes the aerobatics easy and stable.>>

http://www.mscompositusa.com/gfc-ma...1245-white.html

They talk about how they are "highly flexible" and "absorb vibrations" which sounds great for AP use but I always thought the rule of thumb was to use 3D blades because they are stiff. But why????

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