Trimming question.

deffield · Post by **deffield** » Tue May 13, 2008 12:04 pm

Flying solo for a bit these past few days, I've noticed that even if I carefully trim my plane to a constant say 0.8AoA, the plane still waggles, by that I mean it gains speed, climbs, climbs too much, looses speed, dives, gains speed, climbs...etc.

Is this normal, or am I doing something daft?

Main4ce · Post by **Main4ce** » Tue May 13, 2008 12:18 pm

thats normal, when you adjust trim you need to do it in small increments, so going from an AoA of 0.1 say to 0.6 will make your plane climb hard, lose speed and then drop off and so on........

so take off with full trim ...trimming down for speed at a low alt until you get the AoA you want and leave her there, but also give her a chance to settle in! (there is a bit more to it but this will get you off on the right foot)

Also see Codguys "Piloting the DB7" link in the left hand side bar

http://617dambusters.com/guide.html

FuelPump · Post by **FuelPump** » Wed May 14, 2008 3:06 am

That climb/dive/climb/dive routine is called a fugoid.

The aircraft will settle in once it finds itself a nice comfortable airspeed/attitude. Don't try and chase the trim, the trim will end up settling at its own airspeed. If that makes sense...

Codguy has read the right books, landed on the right aircraft carriers, whatever he has to say about it is the good oil.

Admiral1 · Post by **Admiral1** » Wed May 14, 2008 5:40 am

If the current AoA of the bombers are .07 and the flight lead say AoA 1.0.

Did they go right from .07 to 1.0 or did they slowly keep trimming up to 1.0 ?

Main4ce · Post by **Main4ce** » Wed May 14, 2008 3:40 pm

If thats reported then they have gone from 0.7 to 1.0 in one step....which can happen in some situations!

Help, was that you Simon...How are man? I know I speak for all when I say "we missed ya bud" and its great to hear that you are still alive!

FuelPump · Post by **FuelPump** » Fri May 16, 2008 10:49 am

Yeah still kicking thanks mate.
I'm just a bit over logging into the game, diving on some AB and not being able to pull out for lag.

When I get some more loot together (some time after 2015) I'll upgrade my machine, and will probably still fly into the ground. Just won't be able to blame lag.

My weekends have been very busy for a while, studying, flying, all that stuff. Other times I've hopped on, it's either been nobody home, or RDP cycles complete.

I'm just off to the airport in a few minutes to pick up Cono (1.30 am), and we're going out for a fly tomorrow, should be fun. I'll see if I can find him a Panzer and a satchel somewhere.

A good trick with trim is if you have to pull back or push forward on the stick, it means you're out of trim. Adjust trim accordingly, until you can take your hands off the stick, and the aircraft stays more or less where you want it to be.

Main4ce · Post by **Main4ce** » Fri May 16, 2008 12:04 pm

You guys have Fun Simon & Cono!

hiiamben · Post by **hiiamben** » Fri May 16, 2008 12:35 pm

and Simon wrote'

hat climb/dive/climb/dive routine is called a fugoid.

The aircraft will settle in once it finds itself a nice comfortable airspeed/attitude. Don't try and chase the trim, the trim will end up settling at its own airspeed. If that makes sense...

Codguy has read the right books, landed on the right aircraft carriers, whatever he has to say about it is the good oil.
_________________

See dog i told ya it has to find its groove:)