golan73 פורסם פברואר 4, 2004 דיווח פורסם פברואר 4, 2004 שלום לכל החברים יש לי בעיה ב- PMDG, אני מתכנן תוכנית טיסה ב- FMC, מגדיר נקודות, גבהים, מהירויות וכו' (יש לציין ב- N1 LIMIT אני לא נוגע כי עדיין לא הפנמתי אותו), אני מתחיל את הטיסה לפי התוכנית, בגובה משהו כמו 1500 רגל אני מכניס את הטייס האוטומטי לעבודה, כמו כן LNAV VNAV, בשלב מסויים, ה VNAV כבה לי (ולא מקבל הודעה ב- FMC לעדכן גובה), אני מצליח להחזיר אותו לעבודה ואס הולכת השליטה, או שהמטוס פתאום צולל לי או שסתם מטפס כשלא צריך, כמו כן המהירות כבר לא נשלטת ואני צריך לקבוע אותה באופן ידני. יש למישהו שמץ?? נ.ב. - מקווה שנהנתם מהסרט שחילק חגי על ה- PMDG.
ha5mvo פורסם פברואר 4, 2004 דיווח פורסם פברואר 4, 2004 Golan, Do you get a "vnav disconnect" message in your FMC scretchpad? could you be more percise as to the circumstances at which you lost vertical navigation? Thanx //Mike
golan73 פורסם פברואר 4, 2004 מחבר דיווח פורסם פברואר 4, 2004 נכון, אני מקבל ב- FMC הודעת VNAV DISCONNECT ואחרי שאני מפעיל אותו שוב, כל העסק מתחיל להשתגע
jambo7 פורסם פברואר 4, 2004 דיווח פורסם פברואר 4, 2004 Golan,Do you get a "vnav disconnect" message in your FMC scretchpad? could you be more percise as to the circumstances at which you lost vertical navigation? Thanx //Mike אנה ממך. בעיברית אם אפשר
Itay Zecharia פורסם פברואר 4, 2004 דיווח פורסם פברואר 4, 2004 יש לי בעיה זהה! גם לי זה קורה... מה עושים?
ha5mvo פורסם פברואר 4, 2004 דיווח פורסם פברואר 4, 2004 Golan Vnav disconnection can occur due to several reasons, generally it happens when there is some disagreement between the nav profile as entered into the FMC and the aicrafts' actual position/situation. This is why I asked you to be more specific as to when this happens to YOU. There may be several possible scenarios. 1. on descent: because the FMC and VNAV don't have protection against overspeed limits. so before your descent check the DES page and make sure your speed isn't very high. 2.If you still have your cruise altitude set in the MCP, then the FMC will display a "Check MCP Alt" error and disconnect VNAV mode, leaving you in ALT HOLD mode 3. Check your profile!!! vnav will disconnect if it is asked to perform too steep a climb or descent, for example climb from FL100 to FL180 over four miles distance..... 4. also VNAV mode is terminated by any one of the following: - selecting another pitch mode - glideslope capture - reaching end of LNAV route - transition of glideslpoe intercept waypoint if G/S is armed - crosstrack deviation exceeds twice the RNP value during PTH descent for an active leg with a database verticle angle and LNAV not engaged - if the airplane altitude is more than 200 feet below MCP altitude and the autoflight system is not in altitude acquire. Jumbo7 My appologies to you, but neither my system nor its user are capable of writing in hebrew.... I often find myself browsing through the dictionary just to be able to read some of the posts. I'm afraid writing something coherent is just beyond my capabilities at the moment. of course one can ask someone to translate, on the rare occasion I actually do say something of value.... Golan Again, can you please describe the EXACT situation when your vnav dissconects so hopefuly we might try to sort this out Best regards //Mike
ha5mvo פורסם פברואר 4, 2004 דיווח פורסם פברואר 4, 2004 Golan Vnav disconnection can occur due to several reasons, generally it happens when there is some disagreement between the nav profile as entered into the FMC and the aicrafts' actual position/situation. This is why I asked you to be more specific as to when this happens to YOU. There may be several possible scenarios. 1. on descent: because the FMC and VNAV don't have protection against overspeed limits. so before your descent check the DES page and make sure your speed isn't very high. 2.If you still have your cruise altitude set in the MCP, then the FMC will display a "Check MCP Alt" error and disconnect VNAV mode, leaving you in ALT HOLD mode 3. Check your profile!!! vnav will disconnect if it is asked to perform too steep a climb or descent, for example climb from FL100 to FL180 over four miles distance..... 4. also VNAV mode is terminated by any one of the following: - selecting another pitch mode - glideslope capture - reaching end of LNAV route - transition of glideslpoe intercept waypoint if G/S is armed - crosstrack deviation exceeds twice the RNP value during PTH descent for an active leg with a database verticle angle and LNAV not engaged - if the airplane altitude is more than 200 feet below MCP altitude and the autoflight system is not in altitude acquire. Jumbo7 My appologies to you, but neither my system nor its user are capable of writing in hebrew.... I often find myself browsing through the dictionary just to be able to read some of the posts. I'm afraid writing something coherent is just beyond my capabilities at the moment. of course one can ask someone to translate, on the rare occasion I actually do say something of value.... Golan Again, can you please describe the EXACT situation when your vnav dissconects so hopefuly we might try to sort this out For the time being, engage ALT HOLD, set your altitude and reengage vnav. This should work if you have not deviated too much from the profile Best regards //Mike
golan73 פורסם פברואר 4, 2004 מחבר דיווח פורסם פברואר 4, 2004 hi Mike first of all, thank you for your time. i don't know how u r with hebrew, so lets talk english. i'll print your notes, and will try to find the reason as u explain Bye for now
ha5mvo פורסם פברואר 4, 2004 דיווח פורסם פברואר 4, 2004 1 Sorry for the double post 2 also try reading the following thread: http://forums.avsim.net/dcboard.php?az= ... &mode=full
jambo7 פורסם פברואר 5, 2004 דיווח פורסם פברואר 5, 2004 its o.k to right and read in english bat its more comftibuel to it in heabru
