fingers Posted December 4, 2017 Share Posted December 4, 2017 Hi, I'm building the Italeri 1/48 Chinook at the moment and was wondering if anyone has the dimensions for the later type rotor blades so i can have a go at modifying the kit ones, a drawing would be nice as well. All the best Dave. Link to comment Share on other sites More sharing options...
huvut76g7gbbui7 Posted December 4, 2017 Share Posted December 4, 2017 Useful link: http://www.chinook-helicopter.com/standards/areas/blade.html and a drawing https://www.the-blueprints.com/modules/vectordrawings/preview-wm/boeing_ch-47_chinook.jpg Link to comment Share on other sites More sharing options...
fingers Posted December 5, 2017 Author Share Posted December 5, 2017 Thanks for those Scimitar, unfortunately they don't have the info I'm after. What I'm after is either a diagram or set of measurements which would allow me to attempt a mod on the kits rotors, everywhere says the rotors were changed but I can see nothing with dimension changes. Dave Link to comment Share on other sites More sharing options...
huvut76g7gbbui7 Posted December 5, 2017 Share Posted December 5, 2017 I seem to remember a thread in here somewhere. The old metal blades had the taper at the root and the later ones had the squared off ones. Effectively it looked as if they filled in the missing triangular piece. Later blade were possibly wider in chord ? The rotor diameter didn't change but don't trust this old memory Link to comment Share on other sites More sharing options...
Dave Fleming Posted December 5, 2017 Share Posted December 5, 2017 56 minutes ago, Scimitar said: I seem to remember a thread in here somewhere. The old metal blades had the taper at the root and the later ones had the squared off ones. Effectively it looked as if they filled in the missing triangular piece. Later blade were possibly wider in chord ? The rotor diameter didn't change but don't trust this old memory Other way round, the metal blades were square cut at the root and the later composite ones had a taper 1 Link to comment Share on other sites More sharing options...
huvut76g7gbbui7 Posted December 5, 2017 Share Posted December 5, 2017 Thanks Dave. As I was typing that reply I should have listened to the niggle. 1 Link to comment Share on other sites More sharing options...
fingers Posted December 6, 2017 Author Share Posted December 6, 2017 The only place I've found anything approaching a diagram is on a picture of some resin blades made by Heritage Aviation Models, roughly scaling off that seem to suggest a chord to length ratio of 1 to 10 this is the same as the kits mouldings and accepting correctness in their work (debatable allways) would suggest introduction of a root taper would suffice. What do you gents think? Dave Link to comment Share on other sites More sharing options...
Wafu Posted December 6, 2017 Share Posted December 6, 2017 I don't know the definitive answer but if the rotor blades did become longer with the newer blades, wouldn't the airframe have to have a plug put in it to seperate the rotor masts? I would agree with Scimitar and Dave, the blade cord increased with alterations at the root of the blade. Probably no help at all, sorry. Link to comment Share on other sites More sharing options...
fingers Posted December 6, 2017 Author Share Posted December 6, 2017 17 minutes ago, Wafu said: I don't know the definitive answer but if the rotor blades did become longer with the newer blades, wouldn't the airframe have to have a plug put in it to seperate the rotor masts? I would agree with Scimitar and Dave, the blade cord increased with alterations at the root of the blade. Probably no help at all, sorry. Everythings a help Wafu, if I can conclude that 'no one knows better' then I can move on with my build. I personally think length would only marginally be altered, if at all, and any mod, excepting the root taper, would be subtle to make the most of, probably, computer aided aerodynamic improvements. Link to comment Share on other sites More sharing options...
Beefy Posted December 6, 2017 Share Posted December 6, 2017 (edited) The rotor blade is 3ft (90cm) wide and 29.5ft (8.9m) in length, This might also help http://www.chinook-helicopter.com/standards/areas/blade.html This is a link too the Operators manual, great for super detailing http://airspot.ru/book/file/1005/CH-47D.pdf Hope this is of some help Edited December 6, 2017 by Beefy Link to comment Share on other sites More sharing options...
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