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Model Forum / General / Models / January 2008World's largest radio controlled model aircraft
http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1  SignatureEnzo I wear the cheese. It does not wear me. >http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 wow. thanks enzo, that's a keeper. it looks like a good flyer, too. what to do with a spare $20,000 >> http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 >> > wow. thanks enzo, that's a keeper. > it looks like a good flyer, too. > what to do with a spare $20,000 I'm not sure, but that looks like the bird that used to fly at the Ida Grove (Iowa) RC air show. The guy that put on the show owned the RC factory (and in fact, most of the town), Goddard, Godfrey..?? Sorry, I've been out of RC for a long time. Anyway, he had this huge estate, with a home that honestly looked like a castle, moat and all, and he had this huge hangar attached to the back of the home...and from there was a 600 foot concrete runway for his "experiments". As I recall, the bird had a 22' wingspan, full retracts, AND a jumper that parachuted out in flight! As the vid shows, it took two operators to fly the thing. Really Cool. But even that paled to the show he put on. After a day of competition and bizarre flying machines, he put on a WWII dogfight that was incredible, complete with HUGE pyrotechnics bommbing runs, and several fiery "sacrificial" mid-air collisions and ack-ack casualties. Simply amazing. Thanks for the memory! Goedendag Richard and all, > I'm not sure, but that looks like the bird that used to fly at the Ida > Grove (Iowa) RC air show. It's a Belgian team, not American. Vriendelijke groeten ;-) Ron van Sommeren near Nijmegen, the Netherlands int. electric fly-in http://home.hetnet.nl/~ronvans/ > http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 That...is IN-FREAKIN'-sane... Signature- Rufus >> http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 > > That...is IN-FREAKIN'-sane... Anyone know if this Bear bomber is static or RC?: http://www.airforceworld.com/bomber/gfx/tu95/tu95_model.jpg Pat > >>http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 > [quoted text clipped - 3 lines] > > Pat can't tell if they are the same or not, but this one's r/c http://www.bomberfieldusa.com/bbweber.htm >>>> http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 >>> That...is IN-FREAKIN'-sane... [quoted text clipped - 4 lines] > can't tell if they are the same or not, but this one's r/c > http://www.bomberfieldusa.com/bbweber.htm I don't think they're the same - I think the second one is bigger... Signature- Rufus >> Anyone know if this Bear bomber is static or RC?:http://www.airforceworld.com/bomber/gfx/tu95/tu95_model.jpg >> [quoted text clipped - 4 lines] > http://www.bomberfieldusa.com/bbweber.htm > Working flaps must have been fun to design. If it is the same one, it has interchangeable display and flight nacelles on it. Pat >>> http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 >> [quoted text clipped - 4 lines] > > Pat I like that one better. Signature- Rufus on 1/15/2008 3:36 PM Pat Flannery said the following: >>> http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 >> [quoted text clipped - 4 lines] > > Pat I would think that anyone building a model in that scale intends for it to fly. What else would one do with it? Hang it from the ceiling? :-) It looks like it is on a runway and there is something on the ground behind the man which could be related to RC flying. Either that, or it is a duck. :-). SignatureBill In Hamptonburgh, NY To email, remove the double zeroes after @ Goedendag, Or this 8 turbine B52? http://www.youtube.com/watch?v=fbITzCI2AU0 The crash: http://www.metacafe.com/watch/32062/b52_crash/ Vriendelijke groeten ;-) Ron van Sommeren near Nijmegen, the Netherlands int. electric fly-in http://home.hetnet.nl/~ronvans/ > The crash: > http://www.metacafe.com/watch/32062/b52_crash/ Did they figure out what caused it to lose control? Pat Goedendag ;-) Pat > Did they figure out what caused it to lose control? Pilot error, speed too low, according to http://www.alexisparkinn.com/r_c_b-52_crash.htm Vriendelijke groeten, Ron van Sommeren > Goedendag ;-) Pat >> Did they figure out what caused it to lose control? > Pilot error, speed too low, according to > http://www.alexisparkinn.com/r_c_b-52_crash.htm > > Vriendelijke groeten, Ron van Sommeren That's not wholly correct, but a wreck is still a wreck and as they indicate the pilot was at fault. Signature- Rufus > Goedendag ;-) Pat > [quoted text clipped - 5 lines] > Vriendelijke groeten, Ron van Sommeren > That crash site is really something to see: http://www.alexisparkinn.com/photogallery/Videos/B52_Crash_Site.jpg Looks like a Piper Cub had augered in. :-) They're lucky it didn't hit someone's house. Pat > > Goedendag ;-) Pat > > [quoted text clipped - 9 lines] > Looks like a Piper Cub had augered in. :-) > They're lucky it didn't hit someone's house. Those RC jets - even the moderate sized single engine ones - are very different from the average giant scale RC plane. When they go in you sometimes get get the fireball. You don't see that with glow fuel powered planes. They're completely different animals and are flown only by the most expert RC pilots. Even so, when stuff goes wrong it often leaves a smoldering pile. BobbyG > Those RC jets - even the moderate sized single engine ones - are very > different from the average giant scale RC plane. When they go in you [quoted text clipped - 3 lines] > leaves a smoldering pile. > What you basically have there is a midget cruise missile. :-) Pat >>> Goedendag ;-) Pat >>> [quoted text clipped - 18 lines] > > BobbyG I think you need a special AMA rating to fly turbines in teh USA, don't you? Signature- Rufus > >>> Goedendag ;-) Pat > >>> [quoted text clipped - 20 lines] > > I think you need a special AMA rating to fly turbines in teh USA, don't you? Correct. AMA requires that anyone wanting to fly turbines gets a special waiver in order for the AMA insurance backing to remain in effect. BobbyG > Correct. > > AMA requires that anyone wanting to fly turbines gets a special waiver > in order for the AMA insurance backing to remain in effect. > What's the top speed one of these has achieved? Pat >> The crash: >> http://www.metacafe.com/watch/32062/b52_crash/ > > Did they figure out what caused it to lose control? > > Pat Some former B-52 crewmen where I work figured it out after we watched the video frame by frame - the guy over banked it, and it snap-rolled as a result of yaw build up. A problem with all swept wings if you don't get the control system and/or rudder volume sized properly. In the case of a B-52, having spoilers instead of ailerons doesn't help either. What I'm sort of surprised by it that the builders didn't put a yaw damper or some sort of yaw feedback device on it...would have helped, and they certainly seem smart enough to be able to build one. Signature- Rufus >>> The crash: >>> http://www.metacafe.com/watch/32062/b52_crash/ [quoted text clipped - 12 lines] > or some sort of yaw feedback device on it...would have helped, and they > certainly seem smart enough to be able to build one. This should keep them busy. Word of advice - kill the sound: http://www.youtube.com/watch?v=7itrY7wgIKM&feature=related WmB >>>> The crash: >>>> http://www.metacafe.com/watch/32062/b52_crash/ [quoted text clipped - 16 lines] > > WmB Raamstein?.. I get the impression that Germans have a considerable amount of disposable income...just about all of these jet flicks I see are either from the Continent or the UK. I also remember specifically being warned off building a swept wing jet as my first one because of the tendency for yaw induced snap rolls. We had an Hornet jock kill himself in a QF-86 some time ago in just that manner - used the wrong technique crossing a ridge line, slat deployed on the opposite wing and flipped him into the mountain...we had the wreckage spread out in the hangar for weeks. Was easily and repeatably duplicated at altitude...wild ride. Signature- Rufus > We had an Hornet jock kill himself in a QF-86 some time ago in just > that manner - used the wrong technique crossing a ridge line, slat > deployed on the opposite wing and flipped him into the mountain...we > had the wreckage spread out in the hangar for weeks. Was easily and > repeatably duplicated at altitude...wild ride. What was he doing flying a QF-86 around? Delivering it to a target range? Those self-deploying slats were always a problem; they used them on the BF-109 and Me-262 and the things were always deploying unexpectedly or one side would jam and the other would stick. IIRC, a lot of Me-262 pilots just wired them closed to avoid the trouble with them, and accepted the poor handling during low speed flight or at high angles of attack. Pat >> We had an Hornet jock kill himself in a QF-86 some time ago in just >> that manner - used the wrong technique crossing a ridge line, slat [quoted text clipped - 11 lines] > >Pat the luftwaffe training vid the history channel had in it's me 262 program shows a shwartzganger working on a front one with a small hammer and some pliers. pretty loe-tech adjustments. pretty funny. > the luftwaffe training vid the history channel had in it's me 262 program > shows a shwartzganger working on a front one with a small hammer and some > pliers. pretty loe-tech adjustments. pretty funny. > Yeah, the mention that they have to make sure that they move freely. Pilots used to curse the things... they'd be in the middle of a dogfight, get their guns lined up on the enemy aircraft in the middle of a maneuver, and have the slats deploy, throwing off their aim. You would have thought that after the Bf-109 Messerschmitt would have gotten enough negative feedback not to use them on the Me-262, but instead the Me-262 had a even more extensive slat system than its predecessor, covering the whole leading edge of the wing. At least they avoided them on the Me-163B, using fixed slots instead, which may account for why Luftwaffe pilots said it was about the best-handling aircraft they ever flew. Pat >> the luftwaffe training vid the history channel had in it's me 262 program >> shows a shwartzganger working on a front one with a small hammer and some [quoted text clipped - 14 lines] > >Pat even the unpowered versions and the a model proto's had a good rep. always thought it looke like a 40's batmodile. to the messershmit, robin! >> We had an Hornet jock kill himself in a QF-86 some time ago in just >> that manner - used the wrong technique crossing a ridge line, slat [quoted text clipped - 11 lines] > > Pat Yeah...we used to be littered with QF-86s...until we shot them all up....er...down... He was basically joy-riding. He managed to talk OPS into getting him on the schedule, and the result was what it was. I've always wondered why there isn't a cable mechanism on free-fall slats to make them deploy symmetrically. Me 109s had them, too. It's a problem on the TA-4 as well - caught a training video on spin recovery for the TA-4 while I was at NAS Kingsville and they specifically mentioned that. The tendency of a swept wing to yaw-induced snap roll is only aggravated by an asymmetric slat deployment - the film mentioned that, too. If I recall, the snap always happens in opposition to the direction of yaw... Signature- Rufus > What I'm sort of surprised by it that the builders didn't put a yaw > damper or some sort of yaw feedback device on it...would have helped, > and they certainly seem smart enough to be able to build one. I was surprised they built the low vertical fin version; I would have thought you would have wanted all the stability you could get. I always wondered if the low vertical fin was a result of the turbulence problems encountered when refueling from a KC-135. That led to the tail falling off the one over Spain that dumped the H-bombs we had to recover. Pat >> What I'm sort of surprised by it that the builders didn't put a yaw >> damper or some sort of yaw feedback device on it...would have helped, [quoted text clipped - 8 lines] > > Pat From what guys tell me, the only jet aircraft ever produced that actually has a correctly sized vertical tail is a Tornado... That's why so many third-gen fighters have twin tails. Signature- Rufus > From what guys tell me, the only jet aircraft ever produced that > actually has a correctly sized vertical tail is a Tornado... > > That's why so many third-gen fighters have twin tails. They sure found out about too small of a vertical fin the hard way on the F-100. Pat >> What I'm sort of surprised by it that the builders didn't put a yaw >> damper or some sort of yaw feedback device on it...would have helped, [quoted text clipped - 6 lines] > That led to the tail falling off the one over Spain that dumped the > H-bombs we had to recover. Thank goodness he didn't make a working model of one of those :o) (kim) > http://www.youtube.com/watch?v=KmKdA6L_MWk&NR=1 Something like that deserves a nice smooth paved runway. The engine noise kind of kills it, but those scale R-3350 Cyclones would pro'ly be a bitch. ;-) Watching that fly recalls the last time I saw the CAF's "Fifi" fly and I'm having the same thought now - those poor damn/dumb Japanese. That must have been hell on Earth to be in the shadow of a fleet of those killers. WmB Goedendag ;-) B29 with functional Bell X1 rocketplane: http://www.youtube.com/watch?v=BK3VGX87X_Y&e http://www.youtube.com/watch?v=pW9WqHWqMiI Vriendelijke groeten, Ron van Sommeren near Nijmegen, the Netherlands int. electric fly-in http://home.hetnet.nl/~ronvans/ Goedendag ;-) Ooops, wrong link, this one is correct B29 with functional Bell X1 rocketplane: http://www.youtube.com/watch?v=GtIL_VjBUGo&feature=related Vriendelijke groeten, Ron van Sommeren near Nijmegen, the Netherlands int. electric fly-in http://home.hetnet.nl/~ronvans/ on 1/16/2008 3:14 PM Ron van Sommeren said the following: > Goedendag ;-) > > Ooops, wrong link, this one is correct > B29 with functional Bell X1 rocketplane: > http://www.youtube.com/watch?v=GtIL_VjBUGo&feature=related > Fantastic! Nijmegen, eh? A Bridge Too Far. :-) > Vriendelijke groeten, Ron van Sommeren > near Nijmegen, the Netherlands > int. electric fly-in http://home.hetnet.nl/~ronvans/ > > SignatureBill In Hamptonburgh, NY To email, remove the double zeroes after @ >Goedendag ;-) > [quoted text clipped - 5 lines] >near Nijmegen, the Netherlands >int. electric fly-in http://home.hetnet.nl/~ronvans/ wow! > Goedendag ;-) > [quoted text clipped - 5 lines] > near Nijmegen, the Netherlands > int. electric fly-in http://home.hetnet.nl/~ronvans/ The four blade props sound better! Signature- Rufus >> Goedendag ;-) >> [quoted text clipped - 7 lines] > > The four blade props sound better! Much better sound. Amazing how loud it is. Incredible job of flying too. The X-1 is a very nice touch. WmB >>> Goedendag ;-) >>> [quoted text clipped - 12 lines] > > WmB I'd like to know what tat X-1 is powered with; if it's a solid rocket or something else...it sure moved out. Signature- Rufus > Much better sound. Amazing how loud it is. Incredible job of flying too. The > X-1 is a very nice touch. > It would be interesting to know how they got the CG right on the X-1 to allow it to both glide and fly under rocket power. Because the engine loses mass as the propellant burns, the X-1 should have been nose-heavy after the rocket firing. Maybe the mounted it at the center of the fuselage and had it exhaust through a tube at the tail, or figured out someway to slide something in the nose backwards to balance things out. Pat >> Much better sound. Amazing how loud it is. Incredible job of flying >> too. The X-1 is a very nice touch. [quoted text clipped - 9 lines] > > Pat Depends on how heavy the motor actually is, but yeah, I suspect it has an exhaust tube. Other than that it would just require a trim change, I'd think. Signature- Rufus |
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