Jump to content

Leaderboard

Popular Content

Showing content with the highest reputation on 09/04/08 in all areas

  1. I think that's a flawed argument. On older helicopters, and some current ones (Robinson R-22, for example), you have to manually control the throttle in order to keep the rotor speed within the proper operating range. All (almost all?) modern turbine powered helicopters do this automatically. There is a "throttle" in name, but it does not require adjustment during flight. On the Ka-50, there is no twist throttle, there are throttle levers...one for each engine. When you start the engines, they are in the lower-most detent, called "IDLE". After the engines are started and warmed up, you move these levers up to "AUTO", and you're done. You never touch them again unless you lose an engine or you land and you're ready to shut them down. The Mi-17 and Mi-24 have a twist throttle, but again, in normal operation, it's all the way left for "IDLE" and all the way right for "AUTO", and it's never touched in-flight unless there is a problem. If the rotor RPM needs to be adusted, there is a seperate incr-decr swtch for that. (The Ka-50 also has an incr-decr switch for rotor RPM, sort of. It's on the collective.) The fuel controls on modern engines automatically adjust fuel flow rates to keep the rotor RPM within a certain range (or at a specific percent), so the pilot does not touch the throttle during flight except in case of some kind of emergency. And "I need more power" is not that kind of emergency, I'm talking about the failure of an engine or the overspeed of an engine. In other words, the helicopter is way smarter than the pilot at determining how much fuel to put into the engines in order to keep the rotor RPM where it needs to be. To try to compare it to a car throttle, you'd have to assume that the car is permanently set on cruise control for a specific speed. Once you set the cruise control, you never touch the throttle again until you turn off the cruise control. During "cruise", your car's computer determines how much fuel to send into the engine in order to maintain your set speed. Now imagine that this "cruise control" is always on, from the moment you turn on your car, until you turn it off, and all you can set your throttle to is "IDLE" and (for example) "50km/hr", then that would be like a helicopter's throttle.
    2 points
  2. Well, since there are so many polls around:doh: I'd love to make my own one :hehe: So here it goes... Please tell us with which program was the beginning of your long adventure with Eagle Dynamics flight simulators.
    1 point
  3. Just a quick message to tell you all how amazing Flaming cliffs looks with TH2Go! After reading a lot here (our forum) and there (including the excellent forum on widescreengamingforum.com), reviews of hardware, graphics cards, etc, I decided to give myself a proper 50th birthday present and went ahead with buying TH2Go with 3 monitors and a new graphics card. My computer is average good with a Core2Duo E6600 (2.4Ghz) and 2 Gigs of DDR2 memory, and previously I had a nVidia 7950X2 card. When I plugged my 3 new Samsung 19'' flat pannels in through the TripleHead2Go digital edition recently arrived, the FPS were disastrous. I ordered then a new XFX Black edition (slightly overclocked) of the great 9800GX2 card and now everything is fantastic. I get FPS around 20 to 30 on the airbases or above cities flying low, or with dozens of explosions going around and of course, if I fly high, or above water, it can go as high as 200. Anyways, for me, the FPS is one thing but more important is the impression of fluidity without discontinuity... Which is what I do get now. The image is so big now with 3840x1024 that it fills one's vision and even if things are a bit too zoomed in, it is OK because it looks much more realistic (with dials being big like real ones, and trees and details pretty big in the hud). The feeling of everything being more real because bigger was my greatest surprise. It requires quite a bit of fiddling to make it work properly. I was lucky to be nicely helped by a few people including RATCATCHER who really summed up all the previous discussions about it here : http://forums.eagle.ru/showpost.php?p=491571&postcount=59 Most of this info comes from ggg87 and TekaTeka, thanks to them. Here is the original full thread on the problem by ggg87 : http://forums.eagle.ru/showthread.php?t=17306 Here is a thread that is informative on the Widescreengaming forum : http://www.widescreengamingforum.com/forum/viewtopic.php?t=4374 and yet another one : http://www.widescreengamingforum.com/forum/viewtopic.php?p=16713&highlight=lockon#16713 Finally, for those who dont know about it, here is a detailed review of the Matrox TH2GO: http://www.widescreengamingforum.com/wiki/index.php/Matrox_TripleHead2Go_Digital_Edition_%28Featured_Review%29 Together with a good HOTAS and most definitely TrackIR4, it is the most immersive simulator experience! (looking forward to BS with this!) JEFX (less young but more happy:D)
    1 point
  4. The history of Georgian-Turkish arm car. http://krig42.livejournal.com/118266.html
    1 point
  5. Для вертолета это (РЭБ) очень актуально?
    1 point
  6. Yes, the throttles on the Ka-50 would be better labeled as "condition levers", at least in my opinion. The Mi-17, for example, has condition levers, but they are never touched during normal operation, you use the twist throttle to go from full left (ground idle) to full right (flight, or what the Russians call "auto"). On the Ka-50, this is accomplished using the condition levers, similar to the AH-64 (which I am more intimately familiar with). The equipment on the Ka-50 labeled "engine governor" is more related to shutting off the engine in the event of overspeed, and restricting the fuel flow in the event of an overtemp. The fuel controls on the TV3-117 are completely mechanical and extremely reliable. The condition levers on the Ka-50 have four detents: IDLE, MEDIUM, AUTO, and FULL. As far as I can tell in-game, you can only be in one of those 4 positions, but I suspect the actual aircraft can have them placed anywhere along their travel. I don't know how accurate this is, however, since I spend most of my time proofreading the manual and less time actually flying. I'm not completely sure how to use the "MEDIUM" detent, but I do know that you pull an engine's throttle up to "FULL" if the other engine fails
    1 point
  7. ^^ would that be the same "there" as in where the truth lies?
    1 point
  8. The national insignias seems to be from Bulgary
    1 point
  9. mvsgas yours is a much more difficult question to answer than one might expect at first blush. There are two different types of flight control systems in helicopters. One is the mechanical system and the other is the boosted system. In both types of systems you have a means of applying friction to the controls, this keeps rotors from doing unpected actions during startup and shutdown. It also enables the indivdual pilot to apply a level of friction that is comfortable for him/her. In flight, force trim allows the pilot to trim off pressure in the controls and also will allow the pilot to release the controls for short duration actions such as tuning a radio or picking up a map. If the aircraft is hit by a wind gust or becomes dynamicly unstable the force trim will allow it try to return to its approximate pre upset attitude. Force trim hat switch would generally relate to spring or a brake gradient form of cyclic positioning. However in some systems the aircraft will have a stability augmentation system which trys to hold attitude by gyros in which case the attitude would be adjusted by using a trim hat switch. The result is the same but the means is different. In the unboosted system a certain amount of feedback will come back through the linkage from the rotating dynamics and some of this is mitigated by the springs in the linkage. The controls can still be moved against the force trim but will want to return to the prepostion. In a boosted system without the force trim engaged or friction applied the controls can move without a pilot induced action if the controls are released.
    1 point
  10. You have 1.5 seconds, maybe 2. Not enough to do anything - if you try to focus on gunning instead of outflying those bullets, they will intercept you with extreme prejudice.
    1 point
  11. No offense, but your what-if scenarios are getting rather pointless. You ask if a gun that was designed with a standoff capability in mind would be a hindrance when shooting one's way out of a no-win situation . You might as well argue if the rotor is a hindrance when flying in orbit ;)
    1 point
  12. why the russian withdrawnal took so long : http://www.thesun.co.uk/sol/homepage/news/article1597513.ece
    1 point
  13. Russian Su-25 has made it home after this- http://www.strizhi.ru/cgi-bin/yabb/YaBB.pl?num=1219408809
    1 point
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...