Jim Wilson added > Vivian Meazza <[EMAIL PROTECTED]> said: > > > Tried that. Looks just the same to me. As I said some time ago: yer > > pays yer money and yer takes yer choice. Neither is right on the > > ground for differential braking: with one brake full on the > aircraft > > more or less rotates around that wheel. The model doesn't! When the > > aircraft is moving the forward the CofG should rotate about > some point > > outboard of the braked wheel. All to do with tyre slip > angles, but I'm > > not sure if the FDM's know about those, and I would need to > consult my > > race engineering handbooks. > > > > But, hey, we're building flight simulator, not a ground handling > > simulator. If it's good enough that'll do me. > > The ground handling is all part of it. I'm not sure what you > are seeing...but if you moved the origin then the aircraft > should have at least moved the same amount. It might "look" > the same but look closer. Are the wheels in the same > spot on startup? Basically with you need to make sure the > gear is in the > right spot, etc, etc.
I moved the origin, then applied an equal and opposite offset. When one differential brake is applied and the model is viewed in or helicopter view tower view it appears to be turning around its axis rather than around the braked wheel. That said, in chase view and in chase view wo (without) yaw it looks good. This is seems to be the case if the model origin is either the nose (and with offset) or with the CofG as the origin. Am I seeing some artefact of the view perhaps? Seem just fine in cockpit view however. > With YASim fdm configs you can > configure gear animation so that when it compresses in yasim > the gear compresses visually too. YASim will drop the > altitude by an amount relevant to the modeled gear > compression so the aircraft will drop, but the wheels will go > "through the pavement" if you don't amimate the compression > in the 3D model. Been there done that, no probs. > > > PS why in an external view does the Hunter appear to do an > upward roll > > in the up leg of a loop. And a downward roll in the down > leg? And why > > can't I loop the P51? > > I'm not sure what you mean. but there is no problem looping > the p51d. I've done it many times. You might need to hit > ctrl+b to get the manifold pressure up to second stage level. > Am I understanding your question? I enter the loop in a shallow dive, 2nd stage boost on, 350 kts, pull baaack the stick and the model rolls violently and does not enter the loop ... Works fine in other models so it's not the obvious - the joystick. But I expect I'm doing something wrong. > > > PPS the B52 rolls very nicely. Of course the real wings might fall > > off. Not sure I'd like to go to war in an aircraft whose wings fall > > off. > > I'm not sure I'd like to go to war in an aircraft whose wings > did not fall off either. No...wait...I'm sure. I wouldn't. > Hah! No sense of adventure. Spinning around Vivian Meazza _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
