Planebuilder62 Posted December 7, 2019 Share Posted December 7, 2019 Hi there Looking at pictures of Wasps and Scouts on the ground, the main rotor blade tips point towards the ground. The blades themselves look flat, unlike the Wessex or Seaking where the blades curve. It looks like there is a ‘kink’ somewhere in the rotor head, does anyone know more about this? Regards Toby Link to comment Share on other sites More sharing options...
bentwaters81tfw Posted December 7, 2019 Share Posted December 7, 2019 No kink as such, just movement in the head, It's not a rigid head like the Lynx. See here. https://www.britmodeller.com/forums/index.php?/topic/234949733-westland-scout/ Link to comment Share on other sites More sharing options...
Roof Rat Posted December 8, 2019 Share Posted December 8, 2019 Hello Toby Looking through various books I've come up with the following, I hope it maybe of help and not a hinderance. Westland Wasp HAS.1 Four-blade main rotor, with all-metal blades carried on fully articulated hub. Torsion blade suspension system. Two-blade tail rotor with metal blades. Rotors driven through steel shafting. Primary gearbox at rear of engine, secondary gearbox at base of pylon, angle gearbox at base of fin, tail rotor gearbox at top of fin. Main rotor/engine rpm 1:71. Tail rotor/engine rpm ratio 1:15. Main rotor hub has drag and flapping hinges. Rotor brake standard. Tail rotor has flapping hinge. The Wasp had the ability of "negative pitch" from the rotor-blades which enabled the aircraft to "adhere" to the deck until the lashings were attached. Both the tail boom and main rotor blades were foldable to allow stowage. To help explain the technical aspect of the above statement maybe one of the very good ex-pilots or ex-mechanics that frequent here could help. All the best RR (Chris) Link to comment Share on other sites More sharing options...
Ex-FAAWAFU Posted December 10, 2019 Share Posted December 10, 2019 The Wasp ‘ Scout rotor head is very simple; each blade has 3 hinges (flapping, feathering & lead/lag). The blades aren’t particularly long, so you are right that they don’t have the characteristic “bend” of a Wessex or Sea King blade. They all droop the same amount, resting on their respective droop stop. So there is no “kink”; simply a flapping hinge at the blade root. Hope that helps. 2 Link to comment Share on other sites More sharing options...
Tailspin Turtle Posted December 10, 2019 Share Posted December 10, 2019 (edited) If you look at the walk around pictures closely, they do bend a little bit but certainly not as much as the blades with a lower ratio of chord to “span”. See https://tailspintopics.blogspot.com/2013/04/a-note-on-rotor-blade-droop.html Edited December 10, 2019 by Tailspin Turtle Add link Link to comment Share on other sites More sharing options...
Planebuilder62 Posted December 10, 2019 Author Share Posted December 10, 2019 Thanks chaps for all the input. I have looked at a lot of rotor head pictures but can’t quite figure out where the ‘flapping’ hinge is the head. Can you help? regards Toby Link to comment Share on other sites More sharing options...
JagRigger Posted December 11, 2019 Share Posted December 11, 2019 2 Link to comment Share on other sites More sharing options...
Planebuilder62 Posted December 11, 2019 Author Share Posted December 11, 2019 Excellent JagRigger👍 Link to comment Share on other sites More sharing options...
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