Simviation Forums

hello to all: I hope this is the best place for this post. if not please move and please tell me.

I got some jets when I take off the ground speed is so slow. its like 140 knots not even minimum speed for take off. how and where can I adjust the speed in the aircraft file?

also some of my planes landing and taxi lights are so bright cannot see the runway or taxiway. is there something I can do to reduce the brightness of these 2 lights?

why would any one make landing lights and taxi lights so bright that the the person who is taking off or taxiing cannot see where he is going?

same question but with ground speed for take off. why would anyone make 140 knots for take off speed. you might get by with 180 knots for take off speed but not 140.

hope its ok to put in 2 topics in post.

bombardier

what aircraft?
Your generalized commentary posing as a question is not worth trying to answer...yet.

yeah, I thought that was a little broad, I will let you now later for some updates on what planes.

bombardier

Are you dropping in a notch of flaps 5-8 degrees might help!

hello roypcox and pegger :

I got some 330-200's jets acting the same way but I will list the one giving me the most trouble air france 330-200 model by thomas ruth. this jet has landing and taxi lights are too bright cannot see the runway and taxi ways; I have in my notes that the ground speed on the runway is fair (180knots) could be higher maybe (200 knots),but lights way too bright. this other note I have which covers another post deals with sluggish controls which this one badly has.

oh yeah, to answer your question roypcox, no I use notch 2-4 for flaps for take off. most of my planes will take off good with notch 2-4. but then again the others will not. I have tried using notch 5-8 for flaps on the troubled planes but nothing it just keeps on rolling off the runway and into trees and buildings. but it will take off eventually like 5000 ft extra space.
all the troubled planes A330-200 are made by thomas ruth.

bombardier

Hi Bombadier, I haven't flown the Tom Ruth a330/340's in a while but don't remember any problems with take off. A few things to check:

1- Flaps set to 1+F or 2 displayed on EICAS (about 10 degrees flap)
2- Check elevator trim ( sounds like you need to add some up trim)
3- Check gross weight and fuel ( you may have to reduce aircraft weight)

Rotation on average is about 155 knots and and take off around 160-165'ish.

The landing lights are a texture file in FSX texture folder called spotlight.bmp i believe. Search for FSX landing light replacements, there are a few around that will help. Please back-up the original though. Best of luck.

hello to you awaken:

heres a piece of info. I was at summit aviation they have a 4500 ft runway give or take a foot or so, so I I got one of my 330's quatar sat at the runway and think 4500 ft runway a 330 will not take off on that short of a runway. but let me try and with full flaps and 150 knots it took off smooth with about 30 ft extra runway in front of me. I then thought let me try an 8000 ft runway with a troubled 330 plane I got and its a no go, rolled down the runway half flaps rolled off the runway for about a mile and then took off. what a stupid plane. oh yeah, the ground speed as it rolled down the runway was 140knots. not even close for airborne speed.

I do not understand the 330 takes off at 4500 ft runway but it cannot take off at a 8000 ft runway. really??

ok here's what I found out I took a troubled 330 placed it in summit aviation at the 4500 ft runway give or take a foot or 2. gave it half flaps rolled down the runway and take off speed was 135 knots and still have an extra 30 ft of space left. this same troubled 330 plane can take off at a 4500 ft runway but not an 8000 ft runway? and again really?? let me do a couple fly bys and see what I came up with. and I will let you know what I found out.



bombardier

bombardier wrote:hello to you awaken:



I do not understand the 330 takes off at 4500 ft runway but it cannot take off at a 8000 ft runway. really??

ok here's what I found out I took a troubled 330 placed it in summit aviation at the 4500 ft runway give or take a foot or 2. gave it half flaps rolled down the runway and take off speed was 135 knots and still have an extra 30 ft of space left. this same troubled 330 plane can take off at a 4500 ft runway but not an 8000 ft runway? and again really?? let me do a couple fly bys and see what I came up with. and I will let you know what I found out.



bombardier

What is the altitude of the 8,000 ft runway and the 4,000 ft runway? At a higher altitude lift efficiency drops off the higher you are, power drops the higher you are.....
Rick

dumb question, have you checked the fuel and weight, sound like it they are to heavy, have you added trim??

The last two post have really hit the problem on the head. The higher you go the less lift you will have and you have to remember the more fuel you add the longer runway you will need to take off at a given altitude. A B737-400 full of fuel on a runway at or close to sea level can usually take off on 8,000 ft runway. now if you take the same airplane and the same fuel load and try to take off at a altitude of 17,00ft you might not make it. And if you add a heavy head wind into that you will definitely run into a problem.

And if you add a heavy head wind into that you will definitely run into a problem.

Surely a strong headwind would shorten the take-off distance. Correct me if I'm wrong but we're talking airspeed, not groundspeed.

hello hagger and garymbuska and mjrhealth and awaken :

I need to get back to you soon but I did solve something. hagger to make it clear I'm talking about take off speed. mjrhealth I did check on the weight of the plane seems a little heavy so I reduce the planes weight. I did added some trim. fuel was right in range of its' weight. I have not tested the plane out yet. so I will let you know on that.

awaken the 2 airports is as follows dublin international runway 34 is 8,000 ft runway at 248 ft asl. summit aviation is 4500 ft runway and at 76 ft asl. if that helps alot.

garymbuska: hey you are right about head wind the plane would be on the weather channel " why planes crash".

to all who replied: let me try different ways to take off for these few 330's troubled planes I have. it may take a while but we will figure it out. you guys gave me some great ideas to look for. thanks

but I tell ya what, I got air france A330 that does not take off, the controls are sluggish, and the lights are so bright. made by thomas ruth . the information you gave me, I should figure that plane out.

I will be out of touch in a few hours or mabe a day so give me some time to figure this out.

bombardier

bombardier wrote: to make it clear I'm talking about take off speed.

Planes work with indicated airspeed. That is the measure of the speed of the aircraft relative to the air. "Take off speed" is not a measured quantity. Reference speed, on the other hand, is always based on indicated airspeed. So if your Vref for takeoff is 160 kts, then your plane will not be able to fly until it reaches that indicated speed. Google "airspeed" and cross reference that with ground speed as it applies to aviation. I believe you have some learning to do with respect to principles of flight.

bombardier wrote: I did check on the weight of the plane seems a little heavy so I reduce the planes weight. I did added some trim. fuel was right in range of its' weight.

Your aircraft will have a MTOW or Maximum Take Off Weight. That is the heaviest the plane can be if it is going to fly, at sea level. If you go to a higher elevation airport, you either need more runway to build the speed, or less weight to lower your reference speed. Temperture of the air also has an effect on lift performance as well. It is not uncommon to have to lessen the useable load on an aircraft in the heat of summer, because the air is thinner when it is hot. Cold air improves performance.

bombardier wrote: hey you are right about head wind the plane would be on the weather channel " why planes crash".

No....
Head winds are useful. Cross winds are somewhat useful. Tail winds are bad. This is only for take off and landing phases of flight. Once airborne the wind matters nothing, because the aircraft moves relative to the air mass. A head wind adds to your indicated airspeed, and thus decreases your ground speed. This gives you a benefit. Again, you have some learning to do regarding principles of flight.

As for your sluggish controls, it sounds to me like your controller might be at fault. Can you take off using keys? just try it. That will assist you in determining if it is your controller or the aircraft model. Considering that all of these planes have undoubtedly been test flown by their creators, I'm willing to bet it's a problem in your set up.

Few other thing for you to check. Make sure your autopilot is turned off when you are taking off. Make sure your spoilers are in. Make sure your throttle is at max N1. Learn what your reference speeds are for the aircraft you are flying.

Have you tried the lessons section of FSX?
good luck.

pegger I have to beg to differ on the comment "Once airborne the wind matters nothing, because the aircraft moves relative to the air mass."
I flew a flight from San Francisco to Phoenix and was wanting to do it as quick as I could. I was pushing the edge for the speed on the 777-300 I was in, auto pilot speed was set to mach 0.88 knowing the plane would only do mach 0.878 at 34,000 feet. I was hit with a 88 knot headwind and after slowing to proper airspeed after listening to speed warning....I was then hit with a 77 knot tailwind that took me down to a very low airspeed that threatened to stall my plane. My wings were rocking back and forth and I was tempted to drop a notch of flaps I went through several switches in direction and the numbers lowered in the later changes. 3 of the changes I captured.


Rick

What you are describing is the horrific wind modelling in fsx. In real life you might call those microbursts or wind shear. In general, the aircraft responds to the air as if the air was stable. Of course what you are describing is exactly what i explained. You were moving through the air at a certain air speed. The air itself shifted, and you briefly overspeeded while your aircraft tried to get back to the air speed equalibrium it was just in.