Martyn K Posted October 6, 2015 Author Share Posted October 6, 2015 I haven't weighed it yet, but it feels quite light, I'll weigh it and do some sums. I did calculate the wing and tail area to work out the TVC, its fairly easy to do in CAD anyway. It will definitely need a little nose weight but at the moment, - as you see it, its balancing about 25mm forward from the TE - which I think is a pretty good indication on how light the fuselage is. I think that the lead loaded joiner will be required. Good idea about adding a little reflex, I never thought about that M Edited By Martyn K on 06/10/2015 10:31:15 Quote Link to comment Share on other sites More sharing options...
Martyn K Posted October 6, 2015 Author Share Posted October 6, 2015 This lunchtime I have weighed the components so far: Fuselage 312g Left Wing 251g (including servos) Right Wing 247g (including servos) Radio Gear 170g (Rx, 2 Servos, battery) Wing joiner 65g Est Glass & Paint on Fus 50g Est Wing Covering 20g Est Noseweight 50g Target AUW approx 1200g or 42 oz. Wing Area - 364692 sq mm = 36.5 sq dm = 3.9 sq ft Loading = 32g/sq dm or 10oz/sq ft I think I have got the sums right. Not sure how that compares.. Any comments? Martyn PS - really pleased with those wing weights - only 4g difference.. Edited By Martyn K on 06/10/2015 13:08:02 Quote Link to comment Share on other sites More sharing options...
Andy Meade Posted October 6, 2015 Share Posted October 6, 2015 10oz/sq ft?!! This is wayyyy into thermaller territory, well done. You may want a ballast tube in the fuselage too. Very well done on those weights Quote Link to comment Share on other sites More sharing options...
Martyn K Posted October 6, 2015 Author Share Posted October 6, 2015 The alternative wing joining tube will be filled with lead and will add about 200g mass I would guess. Beyond that it will be a struggle to get anything heavy fitted securely. Hopefully the model will be quite slippery in the air. Quote Link to comment Share on other sites More sharing options...
Martyn K Posted October 20, 2015 Author Share Posted October 20, 2015 Last couple of weeks have been slow - mainly fitting out, adding hard points and the rudder and painting the fuselage. Not many photos to show but I thought I would share these with you. and and underneath Getting there. Radio and linkages and ballast etc to do, but very close More to come Martyn Quote Link to comment Share on other sites More sharing options...
Andy Meade Posted October 20, 2015 Share Posted October 20, 2015 Well hello good lookin'! Looks even better with her clothes on, great film & trim work there Quote Link to comment Share on other sites More sharing options...
Martyn K Posted October 20, 2015 Author Share Posted October 20, 2015 Thank you Andy - yes - quite pleased with it.. Trying to keep to the mouldie - in vogue - colour schemes and styles to confuse people. Quote Link to comment Share on other sites More sharing options...
Nigel Dell Posted October 20, 2015 Share Posted October 20, 2015 Nice job Martyn Quote Link to comment Share on other sites More sharing options...
Martyn K Posted October 20, 2015 Author Share Posted October 20, 2015 Thank you. Still a bit to do though before I break it Quote Link to comment Share on other sites More sharing options...
Martyn K Posted November 25, 2015 Author Share Posted November 25, 2015 I maidened the Glass Slipper last Sunday. Ian Jones and I went up onto Bosley Cloud (near Congleton). The wind was flat calm at the foot of the hill so we were anticipating a wasted journey. As we approached the trig point, we could see a couple of models already in the air and we were greeted by a 15mph North North Westerly. Ian went first - he had brought a couple of foamies. I assembled the model and pondered... and pondered.. and pondered (as you do before you maiden a new model) when one of the other fliers present picked the model up and said he would launch it. 5 seconds later it was airborne. It needed 2 clicks of right and 2 clicks of down and it was flying straight and level. A tentative waggle of the aileron control to test the responsiveness and they seem OK (the ailerons look rather small) and by now - within a minutes it was probably about 100 feet up and well out from the slope. One of the benefits of a light wing loading and clean lines. So I whipped it round for a couple of low passes. and Absolutely wonderful. I am still beaming now - 3 days later. The flaps slowed the model up nicely with almost no change in trim. I never really got chance to try the variable camber control on this flight nor rudder response. I flew it for about 20 minutes, then I an took over for a while then I had another go for a while and eventually landed her after about 40 minutes. I went a bit too far back over the ridge and the model landed about 50-75m downwind in the heather - no damage. A very satisfied me at the end of that flight Shortly after this, the wind dropped and the second flight shouldn't have happened but we launched into a breeze which went to zero after about 15 seconds and I had to land at the foot of the cliff. I clipped a rock and that resulted in some minor damage to the fuselage and a cracked canopy (replacement on the way). However, its all back together again now and waiting for the next epic.. Thanks to Ian for the photos. He may pop along with some more later Martyn Quote Link to comment Share on other sites More sharing options...
Andy Meade Posted November 25, 2015 Share Posted November 25, 2015 Fantastic news Martyn, very well done! A shame about the landing-out, but hey - that's slope life for you. Did you try any aeros at all? She really does look wonderful in the air, congratulations. Quote Link to comment Share on other sites More sharing options...
Martyn K Posted November 25, 2015 Author Share Posted November 25, 2015 Hi Andy Inverted was fine - holding just a little 'down' to keep the nose up, rolls were a bit barrelly but that is fixable with differential, loops were OK providing the model was S&L at the start otherwise it was inclined to screw out . TBH, the wind was dropping while we were flying so I was a bit nervous about losing too much height. Get the nose down and it is very quick though... Now thinking about building a 3m version of it.... Martyn Quote Link to comment Share on other sites More sharing options...
Andy Meade Posted November 25, 2015 Share Posted November 25, 2015 Oooh OK - I'd definitely be interested for a 3m version Hope you get some good winds soon to explore the envelope - some handy W / SW this weekend? Quote Link to comment Share on other sites More sharing options...
Jack Banner Posted November 25, 2015 Share Posted November 25, 2015 Great flying picture Martyn, she looks great. Pleasing to hear it fly's well also. Quote Link to comment Share on other sites More sharing options...
Martyn K Posted November 25, 2015 Author Share Posted November 25, 2015 Thanks Jack One thing I forgot to mention and another area that I was a bit worried about. The stall is very benign. Holding full up until it ran out of steam, the nose simply dropped with no inclination to fall into a spin. Very safe.. M Quote Link to comment Share on other sites More sharing options...
Ian Jones Posted November 25, 2015 Share Posted November 25, 2015 Having had my hands on the sticks of Martyn's Glass Slipper I can confirm that it's a lovely model to fly. As it was a maiden flight and not my model I treated it due respect and didn't try anything adventurous but a loop, slowish roll, and climb followed by a wingover were all straight forward. I saw Martyn last night and he still looked like this: Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted November 26, 2015 Share Posted November 26, 2015 Well done, it looks the business Quote Link to comment Share on other sites More sharing options...
Ian Jones Posted November 29, 2015 Share Posted November 29, 2015 A very short video of the Glass Slipper maiden flight: Quote Link to comment Share on other sites More sharing options...
Martyn K Posted November 30, 2015 Author Share Posted November 30, 2015 Thanks Ian M Quote Link to comment Share on other sites More sharing options...
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