sundevil777

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Everything posted by sundevil777

  1. It would if I were intolerant of it, all I said was that I had observed... People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  2. From Chutingstar the difference is $215, That is a good deal for the PD reserve - where? People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  3. If a DZ has landing areas on both sides of a runway (and landing direction is same as the runway), for example, and everyone chooses to land on one side or the other at a decent altitude (as the should - not crossing the runway below 1k), then having both R&L patterns going could make sense to me. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  4. A Precision r-Max is even less, but I think a more valid comparison would be to the conventional PD reserve, so the difference in price is about $200. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  5. spoken like a true right-wing Christian filled with intolerance. That seems like a fine example of tolerance, as compared to advocacy. I have observed true left wing agnostics/atheists to be very intolerant. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  6. Yes they are. As others have said, they also decouple when there is an excessive force difference. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  7. My responsibility was for switch panels in the flight deck, not the controllers, so I did not have first hand knowledge of the issues. I do remember conversations with those that were responsible for that in my design group, but I will probably misrepresent the concerns because I was not directly involved and because accuracy of such hearsay memory is often of low quality. Boeing would not consider implementing sidestick controllers unless they were coupled, and by the nature of the physical layout of sidestick controllers, coupling by physical linkages was not practical (not just a cost issue). The coupling would therefore have to be simulated, and this brought up severe concerns by the human factors design group (I believe human factors design was for the first time treated as a separate discipline on the 777 project) and unacceptable results during the failure mode and effects analysis (the 777 had very high standards for the acceptable probability of severe or catastrophic events, perhaps higher than a military program such as the F-35 might allow). The list of issues preventing implementation was likely much longer than this. In my earlier post, I said, "The Airbus design doesn't lack feedback and coupling just by accident or oversight." I was saying that in the sense that the two features would be implemented together. The implementation of just feedback without coupling could be a different story. Also, I said that there were issues that prevented the implementation of feedback and coupling. I would not claim that it is impossible, but I think it wrong to characterize it as a cost issue. I am trying to convey what I know without claiming to have the details. I think the controller vs wheel issues/tradeoffs/philosophy is interesting and worthy of further discussion, but I think it is wrong to think that Airbus made the decision not to implement either feedback or coupling without grappling with very tough issues and complicated tradeoffs other than just cost. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  8. I don't find there to be any temptation at all. The expectation that the temptation is normal gets passed on to newbies and then... My Pilot 210 loaded at 1.1:1 is still by far the fastest canopy I've ever had, and by far the best landing canopy I've ever had. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  9. Thanks for correcting me, I must have not been around there in the flight deck design group at that time after all. There couldn't be anything about having a 2 person crew in a civilian airliner that could be different than an F-35. It was definitely not a cost tradeoff. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  10. My post #36 outlines my reasons for this statement, but I think you're actually implying that the Airbus design could have feedback and coupling (I brought up additional issues besides those two). The Airbus design doesn't lack feedback and coupling just by accident or oversight. My memory is that it lacks those features because there are design/engineering issues that prevent their implementation. I say this not just because Airbus did not do it, but also because Boeing did not to do it on the 777 and 787. During the design of the 777, the flight deck crew operations guys really wanted to have side sticks (for some reasons), and it wasn't the desire to "stick" with tradition that prevented it. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  11. It's only a crappy analogy if you assume there is no possible way to design feedback and coupling into a FBW sidestick arrangement. Now you're saying it is an appropriate analogy if you also add in the assumption of a hypothetical change to the design which is not at all available. That is surely a crappy analogy. To others - I'm not understanding how the SR gives a false sense of security, is it just because it has a modern set of cockpit instruments/glass displays? Does it have a much more capable autopilot? I suppose it could be reasoned that small planes having that level of sophistication could make pilots confident, but pilots still don't have any fly by wire features or envelope protection, so they still must know they have to keep the airplane flying with their own input. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  12. There was a phrase used decades ago when shades of brown and tan were popular...bounce and blend! People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  13. I like to pick on Bill for crappy analogies. I described the system's drawbacks, he mentioned that the SR has sidestick controllers that give feedback. Because the SR is not fly by wire, the comparison is not useful. I don't see how the SR would give a pilot a false sense of security and illusion of automation. Perhaps you're thinking it is fly by wire. I don't think it is. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  14. Yes, as I had mentioned in my post. The Airbus designers took the established path for their fly by wire design with side stick controllers - no feedback and no coupling between the two sides (those two decisions come along easily together). That philosophy was also applied to the auto throttle. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  15. The SR22 has side sticks with feedback? The Cirrus is a 3000 pound general aviation airplane, the side sticks are hard-coupled to the surfaces, just like pretty much any jump aircraft anyone here jumps from. It also has heated seats and a magic reserve parachute for safe intentional continued VFR flight into IFR conditions. The A330 is a half million pound (500,000lb) transport aircraft. So, the SR22 is a side stick, but is not fly by wire - it is hooked up by cables, etc. to the control surfaces? That is a crappy analogy to the point of how the A330 flight deck works (Billvon's crappy analogy). So to put it more precisely, Fly by wire airliners are not so well served by side stick controllers. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  16. The SR22 has side sticks with feedback? People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  17. Only the larger aircraft that have a traditional wheel and column. All the thousands of modern Airbus airliners with full fly by wire systems do not have it. Since the planes have no provisions in the design to push the sidestick controller, adding a stick shaker would not be easy, and as can be seen from what's happened so far, is not being considered. Maybe an electrical shock to the seat would be more easily implemented. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  18. To reinforce my comment that side stick controllers aren't the best for an airliner, from the article's transcript: People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  19. Normally is the operative word. Even the Airbus test pilots have been wrong about how well the A330 could prevent a stall. Airbus was so confident of their 'envelope protection' that it caused a crash of an A330 many years ago. An airline CEO and top pilot were being treated to a demonstration flight. Airbus decided to impress them with how the plane could not be made to stall, so they planned to take off very aggressively and immediately idle one engine and turn off one of the hydraulic systems. However the flight control engineers had never figured on such an aggressive, very high pitch rate climb being combined with the other 'failures', and the plane could not stop the stall. They ran out of altitude. The investigation found fault in how the Airbus pilots decided to create their own scenario during the pre flight briefing that would impress the customer, completely confident that the plane could not be stalled (as they had been claiming). This incident received much less attention than the crash of the A320 at the Paris air show because no normal passengers were on board. I have a few issues with the Airbus cockpit (this applies to all of their fly-by-wire planes A320/A330/A340/A380 series also, things that I think are a bad idea for a commercial airliner): 1) The sidestick controllers They give no feedback when the autopilot is flying - no movement. I think that seeing the control column/wheel move is a great way for the pilot to know what the autopilot is trying to do. There is also no force feedback as you try to make the plane do more severe maneuvers. I'm not absolutely sure if there is a stick shaker, but I think not. When a pilot moves from right to left seat, they have to 'train' their other arm/hand to use the sidestick controller (it is on the outboard side). I think this is inherently a bad idea, for a commercial airliner. The sidestick controllers are not linked, so when one pilot is flying, the other stick does not move. So what happens if both are trying to fly? There is software logic that decides this, and it is indicated which side is in control with an indicator light, and the pilots can override/take command on their side with the push of a switch. The thought of the logic not working and the pilots pushing buttons to take command is not comforting to me. 2) The autothrottle They do not move in the normal mode, meaning that as the autopilot adjusts power, the handles stay in one position. You can see by instruments what it is trying to do, but not by movement of the big handles. In the normal mode, it is just a big rotary switch. Again, I think seeing the throttles move is a great way for the pilot to know what the autopilot/autothrottle system is trying to do. 3) Envelope protection/limiting (fancy term for the computer doesn't let you do stupid maneuvers or overstress the plane) I don't think it is a good idea to have the fly-by-wire system prevent the pilot from putting too much stress on the plane. We are talking about a airliner, not a fighter. The pilots will never overstress it just for practice. If they need to go beyond the design structural limits to try to get out of a dive, for instance, then I say they should be allowed to try, without having to take the time to put it in an alternate law mode. The Boeing fly by wire system on the 777 still uses a traditional control column/wheel. There are some distinct advantages to the sidesticks, such as reduced weight, and much more room in front of the pilot for a worktable to use maps/manuals/etc, It was tempting, however Boeing decided that it was a bad tradeoff overall. Boeing also decided that strict envelope protection was a bad idea, and that increasing force feedback (it is 'artificial') was a better way of preventing pilots from doing stupid things while not limiting their ability to fly the plane how they see fit. Both Boeing and Airbus have a switch on the overhead console that puts them into a 'direct' mode that cuts out the complex flight control logic and uses separate/simpler software that results in a less 'refined' feeling for the pilot. This requires time to activate it, and I would rather the pilots have complete control to try what they want without having to look up and back to activate a switch first. If I've incorrectly described some details of how these systems worked, I apologize in advance. It probably will not surprise you to learn that I used to be an engineer for Boeing in their flight deck group during the development of the 777, hence the 777 in my username. Of couse Boeing has had problems, such as 737 rudder reversals, 747 cargo door latches, and uncommanded 767 thrust reversals. However, I think their choice on the column over the sidestick controller, and the flight control logic are examples of interesting, and important points of discussion. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  20. I believe that part of the start up self test for all AAD models is a continuity test of the cutter. After a cutter is fired, it will not pass this part of the test, so the start up test should fail. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  21. Of course you have to test the container. Then why did you say in post #91: People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  22. You might want to call them and make sure they can make a container big enough to hold the canopies you will (should) be using (big canopies if you're wise). Look at the bottom of the page: http://www.rigginginnovations.com/products/talon_fx.htm People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  23. Don't know where he learned to jump, but I have a pull up cord, $20 and a bunch of rubbers... never know where you're gonna land! (I haven't landed off since AFF though and it wasn't my spot!) I also keep some rubber bands handy Bad Spot / Off Landing 'Survival Kit' contents check. In it you'll find: one forty-five caliber automatic; two boxes of ammunition; four days' concentrated emergency rations; one drug issue containing antibiotics, morphine, vitamin pills, pep pills, sleeping pills, tranquilizer pills; one miniature combination 'Wuffo' phrase book and Bible; one hundred dollars in rubles; one hundred dollars in gold; nine packs of chewing gum; one issue of prophylactics; three lipsticks; three pair of nylon stockings. ~ AND a pull-up cord... Shoot, a fella' could have a pretty good weekend in Vegas with all that stuff. Slim Whitman in Doctor Stranglove People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  24. Paypal is supposed to be relatively safe, but people with stolen credit cards can set up an account and use the stolen card info, then the payment reversed when the fraud is realized - I think that's how the scam would go when paypal is used to pay for something. Of course picking up an item in person is part of the scam. Maybe there is something within paypal that prevents people from doing this, or allows sellers to check out the history of a buyer, I don't know. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am
  25. The reference-contact-mailing address listed for his one property in FL is not the same as his wife's, which seems strange. It is 7468 Mount Sherman Rd Longmount, which is a residential area, just houses. People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am