IAD Posted August 18, 2006 Share Posted August 18, 2006 Almost finished with the thrust-vector vanes. They're tricky, getting the tissue to conform to the curves, and what-not, but looking great. (Much better than bare foam, as per the first ship.) ~Luke Quote Link to comment Share on other sites More sharing options...
IAD Posted August 20, 2006 Share Posted August 20, 2006 Thrust vector vanes are finished. Next step is the ducting... I'll be temporarily installing my fans in your ship, so I can make sure the thrust values are where they should be. (I need to pull the fan housings out anyway, so I can get the fans back on the shafts.) Should I shoot for a before-December completion date? ~Luke Quote Link to comment Share on other sites More sharing options...
kensei Posted August 20, 2006 Share Posted August 20, 2006 HAHA!Yes, that sequence was classic... --SWAPZzzzzz!-- "Whoa! Fan's gone......." "Ooh... It glides..." -Pause- "Uh-oh." ~Luke 417986[/snapback] Dude, those vids are soooo worth downloading. Great work! Quote Link to comment Share on other sites More sharing options...
IAD Posted August 21, 2006 Share Posted August 21, 2006 Thanks! I'm still trying to get around to posting the last video I took... It's a longer set of flights, though still plagued by the fan-throwing behavior... Apparently, the motors are literally melting the fans. Going to apply some heat-sink compound to the heatsink/motor interface, which should clear up the problem once and for all. ~Luke Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted August 21, 2006 Share Posted August 21, 2006 Thats great news Luke. ill e moving back to the states in early December so it might be best for you to hold on to the airframe until i get to utah. I dont want military movers to crush it in packing. i cant wait to see it in the flesh and to get a paint job on it. Quote Link to comment Share on other sites More sharing options...
IAD Posted August 21, 2006 Share Posted August 21, 2006 Ok, I'll have it ready for you. ~Luke Quote Link to comment Share on other sites More sharing options...
IAD Posted August 22, 2006 Share Posted August 22, 2006 Ok, I just finished torture-testing the fans: A 5 minute full-throttle run, under static conditions. Both fans passed! Because the fans weren't mounted inside the SV, I was able to monitor temperature (roughly speaking) as well. The motors got pretty hot, but not so hot that I couldn't hold them. A 30-45 second low-throttle cool-down after the test cooled them down nicely. I'm guessing that 6 minute flights with throttle management and cooling the motors off with the fans running at low throttle for a minute or two afterwards should keep things running smoothly. Only testing will tell. (Which means more SV flying! ) ~Luke Quote Link to comment Share on other sites More sharing options...
jwinges Posted August 23, 2006 Share Posted August 23, 2006 I just read this whole thread and all I have to say is HOLY CRAP! That's so freaking cool. By chance could give us a run down on how much it cost to make one of these? Keep up the great work. Ok, I just finished torture-testing the fans:A 5 minute full-throttle run, under static conditions. Both fans passed! Because the fans weren't mounted inside the SV, I was able to monitor temperature (roughly speaking) as well. The motors got pretty hot, but not so hot that I couldn't hold them. A 30-45 second low-throttle cool-down after the test cooled them down nicely. I'm guessing that 6 minute flights with throttle management and cooling the motors off with the fans running at low throttle for a minute or two afterwards should keep things running smoothly. Only testing will tell. (Which means more SV flying! ) ~Luke 427265[/snapback] Quote Link to comment Share on other sites More sharing options...
IAD Posted August 23, 2006 Share Posted August 23, 2006 Glad you like it! Cost: About $300 for the gear, motors, etc... The foam and whatnot is rather inexpensive, but turning it into an SV is... Well, difficult. ~Luke Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted August 23, 2006 Share Posted August 23, 2006 I cant wait to see more flight footage Luke. Its almost haunting seeing it fly. Quote Link to comment Share on other sites More sharing options...
IAD Posted August 24, 2006 Share Posted August 24, 2006 I've almost got the video of the previous set of flights compiled. Just searching for a bit of music to put in the background. (While not necessary, it does add something.) I agree, it's quite amazing, seeing it cruise around up there. I only wish I had a few VF-0 CFs to chase around. ~Luke Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted September 10, 2006 Share Posted September 10, 2006 Music? We dont need no stinking music. Besides its been 2 weeks have you edited the vids in that time? Quote Link to comment Share on other sites More sharing options...
IAD Posted September 11, 2006 Share Posted September 11, 2006 Ah, MW is back! Very nice. Ok, fine by me. I'll just compress it, and have done. (I'm finished with the editing, but I haven't got it small enough to ship over the Internet. Also I've been rather busy with assorted things, including but not limited to SVs and a lasertag Desert Eagle .50 caliber pistol.) By the way, I sent you an e-mail, need a bit more input. ~Luke Quote Link to comment Share on other sites More sharing options...
IAD Posted September 11, 2006 Share Posted September 11, 2006 Ok, video's being compressed right now. It'll be posted in an hour or two. (~24 MB, best guess.) ~Luke Quote Link to comment Share on other sites More sharing options...
IAD Posted September 11, 2006 Share Posted September 11, 2006 (edited) Right-click and Save As (20 MB, DiVX 5.2.1 compression.) Log: 00:20 Initiates loop. Heading change of 90 deg. results from gusty conditions. 01:04 Initiates attempted roll, aborts inverted after pilot judges roll rate to be insufficient. Recovery successful. 01:40-01:43 Uncommanded pitch up resulting in stall and 360 deg. roll. Altitude reduced to 0 ft. Pilot regains control before impact, vectors thrust to place the aircraft nose high and activates SWAG system, preventing damage to the airframe. Accident attributed to a short in the FBW system. (Corrected.) 01:46 Modified launch profile, note sharp rotation to level. 02:29 Initiates series of S-turns. Turbulence/wind gusts become more severe. 03:23 Forced landing due to low airspeed, low altitude, and low pilot aptitude. Contributing factor was wind conditions. No damage to the airframe. [Pilot commentary: You know, I have yet to land this aircraft, in a truly deliberate sense. It's getting on my nerves. I keep find myself loosing just a bit too much altitude and airspeed in a low-level turn, and just level it off and let it settle in. At least it's easy to do.] ~Luke Edited September 11, 2006 by IAD Quote Link to comment Share on other sites More sharing options...
IAD Posted September 11, 2006 Share Posted September 11, 2006 Forgot to mention: I'm re-rigging the SV control system. While the current setup works well in terms of control, I think I could get a bit more efficiency out of the airframe by reconfiguring the elevons as flaperons. (That is, up elevator causes the flaps/ailerons to deploy down. See attached diagram.) While the flaps will cause a small nose-down pitching moment, it should be overcome by the combined effects of the canard, elevator and thrust-vector surfaces, which have a greater mechanical advantage. Overall, this setup should provide better climb and speed retention. ~Luke Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted September 11, 2006 Share Posted September 11, 2006 Great stuff. Its good to see for once your having good experiences with a foam airframe. It also seems its proving to be a little more resilliant than you thought. Quote Link to comment Share on other sites More sharing options...
IAD Posted September 11, 2006 Share Posted September 11, 2006 Yes, it's very strong, though I have taken a few minor dents. (Almost all of them from 'hanger rash' incidents, actually.) Overall though, it still looks as good as ever. I added a couple of reinforcements to key areas on yours, to prevent this type of damage. Trimming your fingernails before launching is probably a good idea, though. ~Luke Quote Link to comment Share on other sites More sharing options...
IAD Posted September 11, 2006 Share Posted September 11, 2006 Oh, Sean, since you're here... I've got a question: Some of these photos show a slight texture to the surfaces... Mostly it's very smooth, but in a couple spots, there's a slight foam texture. (I'm referring to the tissue-covered areas, ignore the surface between the nacelles/intakes, it's unfinished, and therefore very rough.) The texture can only be seen from specific angles, and at close range. On mine, it's pretty much unnoticeable, because I used flat grey/black. What worries me is that since the Nora scheme has a gloss/semi-gloss finish, these flaws might show up if it's examined closely. Note that this is purely aesthetic, in terms of flight performance, it won't make a bit of difference. Also, there's a photo with a red arrow. It's pointing to a slight shaping flaw. Unless otherwise instructed, I'm going pick up some ultra-light filler, and see if I can't get the shape right. ~Luke Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted September 11, 2006 Share Posted September 11, 2006 Looks fine to me. Im not going gloss on the paint anyway since its heavier to use. Matt paints are more opaque and take less to cover completely. The Nora scheme is also very disruptive so people will be seeing the overall look more than the foam texture. Quote Link to comment Share on other sites More sharing options...
IAD Posted September 11, 2006 Share Posted September 11, 2006 (edited) Ok, sounds good. It is very minor, at 2', you can't see it at all. I also just managed to remove 0.1 oz. of excess glue, filler and foam! I'm determined to make weight targets on this one. (Mine was 0.62 oz. over target weight.) I'm trying to get you about a half ounce to work with, in terms of finish weight. (At that point, it would still be lighter than mine.) ~Luke Edited September 11, 2006 by IAD Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted September 12, 2006 Share Posted September 12, 2006 You know i never noticed how much more prominent the bumps on the fuselage in front of the engine housings were on Noras SV. The ones on Ivanovs blend a little more. Im talking about the 2 pieces that run parallel to the cockpit housing. Quote Link to comment Share on other sites More sharing options...
IAD Posted September 12, 2006 Share Posted September 12, 2006 (edited) Wait, wha..? You mean on the build, or in the anime? If the former, I haven't got them glued in... Once I do that, I can finish blending them into the top of the fuselage. (This is what I did with the first foam airframe. It's the only way to blend them correctly, since foam doesn't like to be sanded to paper-thin edges...) If the latter... Let's see some screens, so I can get this right..! ~Luke Edited September 12, 2006 by IAD Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted September 12, 2006 Share Posted September 12, 2006 I looked at the 2 hasegawa models and the ones on noras seem a little fatter almost like what you have on the airframe. I could just be seeing things. Ill have to check the vid when i get home. Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted September 12, 2006 Share Posted September 12, 2006 Luke is someone on the RC group forums doing a SV-51 as well? I did a google search for SV-51 and got some pics from RC groups that were not your airframe. Quote Link to comment Share on other sites More sharing options...
IAD Posted September 13, 2006 Share Posted September 13, 2006 (edited) What?(!) Not that I knew. Let's see the link. I did give a fellow a set of outlines for a profile job. I just did a sweep on RCG, and didn't come up with a thing... (Except a year's worth of my posts... ) Wait, I just got it: http://www.daddyhobby.com/forum/showthread...0659&page=1 ~Luke Edited September 13, 2006 by IAD Quote Link to comment Share on other sites More sharing options...
IAD Posted September 13, 2006 Share Posted September 13, 2006 Oh, by the way... Since there's no access after I install the intakes, I would like to lay down a base coat and polish the duct surfaces. (Decrease turbulence/increase thrust.) Any specific color that you'd like, or would Tamiya Dark Grey be sufficient? ~Luke Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted September 13, 2006 Share Posted September 13, 2006 Dark grey would be fine although real intake trunks are white. Grey would work better for the aircraft. Quote Link to comment Share on other sites More sharing options...
IAD Posted September 13, 2006 Share Posted September 13, 2006 The ducting is white, eh? Very interesting. I'll have to watch M0 again, I guess. It wouldn't be a problem for me to do, that's for sure. Anyway, I've almost finished covering the nose... I should be working on threading controls in a little while... And once I finish everything, I'm going to go back and update mine. I really nailed the shape of the nose on the second airframe, and mine is looking a bit square, by comparison. ~Luke Quote Link to comment Share on other sites More sharing options...
HWR MKII Posted September 14, 2006 Share Posted September 14, 2006 Real intake trunks are white to aid in intake inspections after flight. Dirt, Debris, or say Bird guts will be more readily visible. For the model though grey will be fine to use. Quote Link to comment Share on other sites More sharing options...
IAD Posted September 14, 2006 Share Posted September 14, 2006 Gotcha. Grey is anime-accurate, as far as I have seen, to boot. White would get dirtied up, anyhow. It's amazing how much dust this thing ingests during a flight. ~Luke Quote Link to comment Share on other sites More sharing options...
IAD Posted September 24, 2006 Share Posted September 24, 2006 Ok... Last week was rather lackluster, in terms of progress, but I'm back at it... I've got the right thrust-vector hinge assembly bolted (literally) into the airframe, and it's in order. I'm going to go install the other one right now. ~Luke Quote Link to comment Share on other sites More sharing options...
Splash Posted October 9, 2006 Author Share Posted October 9, 2006 It's been a while! I'm the one who dragged you into all this, IAD. I know you've got a weight goal but I'd like to see how the SV flies after you stick a 1/4 oz of lead in the nose; does wonders for high-speed slope gliders. Nose heavy planes fly sluggishly, tail heavy planes fly once. Quote Link to comment Share on other sites More sharing options...
IAD Posted October 9, 2006 Share Posted October 9, 2006 Huh, say again? How about I move the battery forwards instead? But...... Why would I want it to fly sluggishly? ~Luke Quote Link to comment Share on other sites More sharing options...
Edwood Posted October 11, 2006 Share Posted October 11, 2006 Anyone archive the videos? All the video links are dead. -Ed Quote Link to comment Share on other sites More sharing options...
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