Simviation Forums

I like heavy transports, want to simulate a real flight between Denver Intl. to Vandenberg AFB (CA) carrying Atlas rocket boosters, whith the Thoma's Ruth Antonov 124 freeware.
Load the plane with 75.000 kg + fuel, both below the max TO weigth.
You can imagine the problem: The airplane doesn't lift, she reach 175+ knots at runway's end and do not take off.

Trying too with flaps in poss. 1, 2, no flaps,...
I trying in Los Angeles Intnl. (thinking Denver is a little high) and the same results. Seems lack of power.

These are long (or normal) runways, no?

Some idea?

Thank for reading my confession.

It shouldn't be a lack of power, if you're able to get it to "175+ knots ".
Try some up trim on the elevator. (might need alot of it)

Beyond any temperature and density altitude issues, as groundbound stated, you may need to put in some stabilizer trim prior to rotation. (Probably something between 3 and 5 degrees...)

Thanks a lot for answer me.

I

Are you using the autopilot?

No, no autopilot in takeoff. I even change the panel into a standar 747. Same result.

The problem seems to be inacurated config files, to me. I'm not sure what version works well, since this aircraft have many (some)repaints/versions above the Ruth textures. The panels ain't very good too (Sorry and thanks for the people who made it).

I transfered the cargo in a Cargolux 747-400 F (Opensky) - a lot of time and money lost-

The problem appears to be in the FDE, modified default 747 .cfg and .air files.

I've done some .cfg tinkering with the [weight_and_balance], [TurbineEngineData] and others, and although it's better it's still a struggle to get up at 75% MTOW at MSL.

Probably requires someone with more knowlege in such things to straighten it out.  

Dave  

Although I'm not a virtual aircraft engineer and I'm not sure this will fix the problem, you might want to give AirWrench a try to fix the problem ...