Bwood From United States of America, joined Oct 2004, 32 posts, RR: 0 Posted (9 years 8 months 6 days 1 hour ago) and read 6182 times:
I don't know how many of you have noticed that the default 747 in FS 2004 is very overpowered on takeeoff, but I have. There have been instances where I have been going 200-220knts on the ground and climbing practically like an F-15 on my inital climb. I even have seen that there is a patch for the default 747's air file to make the takeoffs more realistic. Well I tried to find a way to control the 74 on takeoff and I think that I have done it. Now I usually fly light since I do domestic U.S. routes on the flight sim in the 74. So this procedure should work for takeoff weights from 625,000-about 700,000lbs. This transfers into about 120-150,000lbs of fuel and 120,000-150,000lbs of payload.
First line up on the runway and set your parking brake. Then make sure that your flaps are set to 2C indicated. Then slowly increase the power up to about 80 on the N1 gauge and release the parking brake. While starting your takeoff roll keep increasing the power up to 90 on the N1 but no higher than 95. At 120-130knts indicated start to pull back on the stick. You should rotate and start to climb at about 180-190knts. Once you have left the ground pull the plane back to a 20 degree indicated climb and once established in this climb bring up the gear. Your speed should start at about 195 and slowly decrease to about 190-185. At 1000-1500ft lower the climb angle to about 10 indicated or little higher. Your speed should jump up to about 200-220knts. At this point you will probably have to raise the flaps to 1C and then adjust power to maintain a 230knt. climb of a little over 2000ft/min. Your power setting should stay at 90-95 N1 until you raise the flaps to 1C and you will have to lower the thrust to avoid going above 230knts. Watch your speed and raise the flaps as you get higher and your flaps should be totally retracted once you get between 6000 and 8000 ft. At this point you should be ready to transition to your prefered climb speed above 10000ft. By the way don't quote me on these speeds being exact. There are many variables in flying that can change the speeds and rate of climb. These are very accurate if you follow the listed procedure but weather and other factors could make them different. With this in mind feel free to use the speeds that you feel comfortable with. However, these are good averages for the 74 when this is followed.
I hope that this info can help some of you out there to make a more controlled and realistic takeoff in the 747. Please give me feedback and let me know if it works for you. I am working on finding a good procedure for higher weights so tell me what weights you operate at. Let me know if there are other planes that you are having takeoff or landing difficulty with. Also let me know what payloads you typically use for the 777 and 747. I am always am confused on what to set it at. Your input is greatly appreaciated.
MarcoB2 From Italy, joined Aug 2004, 37 posts, RR: 0
Reply 1, posted (9 years 8 months 5 days 7 hours ago) and read 6084 times:
you brought up an issue that is very important to me: how realistic a take off is. I had the same concern. Whenever I used to take-off with an airliner I always saw an exaggeration in the power of the plane. With a 747 I could lift it in less than 15 sec which is not realistic even if you have low fuel. I saw some real 747 take-off videos, and I figured that for a fully loaded, intercontinental flight it can take up to 1 min run on the rwy before it gets lifted. I never experienced such a thing on the FS, but since when I saw that we don't need 100% thrust I started enjoying FS much better.