deviletk Posted May 14, 2008 Share Posted May 14, 2008 That is awesome! And yes, nice landing indeed. Regards Alex "Snuffer" D. AMD FX8350 (8 core) 4.1GHZ ::: 8GB Dominator 1600mhz ::: GTX660 2GB ::: 2xHD ::: 24" ASUS Link to comment Share on other sites More sharing options...
VMFA117_Poko Posted May 14, 2008 Share Posted May 14, 2008 I'm really looking forward to compare the different types of helos in one simulation. Considering the level of physical detail modeled, this could be really interesting. :thumbup:Indeed! As well as other people's finesse style of flying them ;) Link to comment Share on other sites More sharing options...
swepain Posted May 14, 2008 Share Posted May 14, 2008 I don't mean to sound like I'm kissing a.. but The game look fine to me, 10 time better that any other helicopter game I have seen out there. Any way very cool thanks Ill second that.. it looks done.. just realese the darn thing ^^ :music_whistling: plz;) 1 It takes a fool to remain sane :huh: Link to comment Share on other sites More sharing options...
eurofor Posted May 14, 2008 Share Posted May 14, 2008 The physics look very realistic. I love the way it bounces when it touches the ground! [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
BBQ Posted May 14, 2008 Share Posted May 14, 2008 The physics look very realistic. I love the way it bounces when it touches the ground! I must agree, it is a very nice representation of reality :thumbup: Link to comment Share on other sites More sharing options...
Murderous Posted May 15, 2008 Share Posted May 15, 2008 Coaxial rotor helo has its own disadvantages while autorotating that are the reverse side of a medal of its counterrotating. One of them is yaw control. Due to this reason you must not try to maintain normal rotor rpm because you can get lack of rudder or even rudder reversed. The flaring is harder to do because of the same reason and you have to apply collective as you begin to flare so rotor can not be accelerated while flaring. Otherwise you cannot prevent right yawing while the speed is bleeding. I understand what you mean...to an extent. I don't really understand how the yaw control problems work out. At what speed do you keep the rotor in the KA-50 during autos? Single rotor birds also have a tremendous increase in rotor speed (without collective application) during the flare as well...so that appears the same. I hope someone can shed some light on this subject for me. Link to comment Share on other sites More sharing options...
Mugatu Posted May 15, 2008 Share Posted May 15, 2008 I'm with him :) open beta time to really sort out the bugs. :thumbup: Ill second that.. it looks done.. just realese the darn thing ^^ :music_whistling: plz;) Link to comment Share on other sites More sharing options...
Sundowner.pl Posted May 17, 2008 Share Posted May 17, 2008 I understand what you mean...to an extent. I don't really understand how the yaw control problems work out. At what speed do you keep the rotor in the KA-50 during autos? Single rotor birds also have a tremendous increase in rotor speed (without collective application) during the flare as well...so that appears the same. I hope someone can shed some light on this subject for me.It's because of how the yaw is induced in coaxials. The yaw is acquired by decreasing torque on one of rotors - for example the Gyrodyne drone had brakes at the ends of blades and Kamovs and Sikorsky change the pitch of both rotors (one is increased while other decreased) in that way the lift is constant, but torque is not. This leads to a serious problem - those rotors are big, and generate more force than a typical tail rotor. While on single rotor aircraft operating the pedals will cause RPM to drop - in coaxials this will happen much quicker. Plus the rotors have to be highly loaded to generate enough torque dissimilarity for turning the helicopter, that's why you need to apply more collective in low RPM situation to still have yaw controls. Plus just adding the disturbence of flow in autorotation, where the air is going from underneeth, pasing one rotor, than another. I don't have chart on that, but it seems the coaxials need a bit higher descent rate to keep RPM of both rotors at optimum - this will result in lower glide rate, which is not great to begin with - for example glide rate of Bell 206 is 2:1, while "non-glideable" F-104 was better at 4:1. [sIGPIC][/sIGPIC] "If a place needs helicopters, it's probably not worth visiting." - Nick Lappos Link to comment Share on other sites More sharing options...
sobek Posted May 19, 2008 Share Posted May 19, 2008 [...] Kamovs and Sikorsky change the pitch of both rotors (one is increased while other decreased) in that way the lift is constant, but torque is not. Thats the way i imagined it to work, since its most obvious. Still, the angular velocity of both rotors stays the same, right? Good, fast, cheap. Choose any two. Come let's eat grandpa! Use punctuation, save lives! Link to comment Share on other sites More sharing options...
AlphaOneSix Posted May 19, 2008 Share Posted May 19, 2008 Thats the way i imagined it to work, since its most obvious. Still, the angular velocity of both rotors stays the same, right? They don't have a choice, they are both connected via gearing in the main gearbox, so they both always spin at the same speed. Link to comment Share on other sites More sharing options...
Sundowner.pl Posted May 19, 2008 Share Posted May 19, 2008 Yes, as both rotors are "hard" connected in the main gearbox the sum of both rotation speed will always be constant... until a mechanical failure occur :smilewink: Darn, Alpha bit me to it ;) [sIGPIC][/sIGPIC] "If a place needs helicopters, it's probably not worth visiting." - Nick Lappos Link to comment Share on other sites More sharing options...
sobek Posted May 19, 2008 Share Posted May 19, 2008 They don't have a choice, they are both connected via gearing in the main gearbox, so they both always spin at the same speed. Yeah, i figured that much, i made a false assumption there. If the rotors were to be allowed to start spinning at differing speeds via differential gear it would counter the effect of different collective as the torque would stay the same, i guess. Good, fast, cheap. Choose any two. Come let's eat grandpa! Use punctuation, save lives! Link to comment Share on other sites More sharing options...
CobraDriver Posted May 24, 2008 Share Posted May 24, 2008 1 note to this discussion. The term autorotation can be used equally amongst helicopters when discussing that maneuver. The difference is in HOW you do it. All helicopters do not auto the same. A bell 206 you lower the collective while leveling the attitude just prior to touchdown. A Huey, you decel aft cyclic around 50 ft, apply initial collective around 15 ft and constantly and gently increase collective holding it off the ground for a smooth touchdown. The UH-60's cyclic decel is applied around 90 ft AGL and the collective is applied around 40 ft. AGL for cushion. Now when you add european models with opposite turning rotors or this twin rotor model in this sim, different procedures must be followed. Cobra Driver Pugnare Fornicare Au Mort Link to comment Share on other sites More sharing options...
Shaman Posted May 24, 2008 Share Posted May 24, 2008 This is crazy! I mean, crazy! I wouldn't like to do it in real at all. 51PVO Founding member (DEC2007-) 100KIAP Founding member (DEC2018-) :: Shaman aka [100☭] Shamansky tail# 44 or 444 [sIGPIC][/sIGPIC] 100KIAP Regiment Early Warning & Control officer Link to comment Share on other sites More sharing options...
AlphaOneSix Posted May 24, 2008 Share Posted May 24, 2008 They aren't so bad, depending on the aircraft. Mi-8/17, for example, autos like a dream. Link to comment Share on other sites More sharing options...
Sundowner.pl Posted May 24, 2008 Share Posted May 24, 2008 And the Mi-14 drops like a rock :D Seriously, don't do full autos in it unless you have a death wish, its way to heavy, and landing gear is way to weak. [sIGPIC][/sIGPIC] "If a place needs helicopters, it's probably not worth visiting." - Nick Lappos Link to comment Share on other sites More sharing options...
VS461 Posted May 24, 2008 Share Posted May 24, 2008 They aren't so bad, depending on the aircraft. Mi-8/17, for example, autos like a dream. Same for Mi-24s:) To touch down a 12-ton warbird after autorotation... another nice question of practice. I heard about NFTC's Bell 206 autorotation training, they do it till the ground. But JetRangers are light helos (an owner showed me the main gearbox. Almost good for a tail gearbox on Mils:D He said there are differences...). I'm sure that practicing until-touchdown autorotation with Mi-8/17/24-sized helos reduces that army's fleet very fast:D THX! За всю историю никто и никогда не сумел завоевать Афганистан. Hикто и никогда Link to comment Share on other sites More sharing options...
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