On Fri, 2 Apr 2004 08:22:49 +0100, "Vivian Meazza" <[EMAIL PROTECTED]> wrote:
> >Not only the clever radiator, but also the ejector exhausts ... They have >both been exercising my mind recently. I think both could be modelled within >the existing Yasim framework. They are both a source of additional thrust, >and both have an associated drag penalty. >From 'Combat Development in World War II: Fighter Aircraft': For a Spifire V changing from 'fishtail' to 'ejector' type exhausts improved maximum speed by 7 mph. Rubbing down, polishing and filing gaps gave 6 mph more, waxing 3 mph more. >On the other hand, the >contribution of both is marginal, I feel. I would be surprised if the >radiator drag, or lack of it effected the overall behaviour of the P51d >model. I think there is something bigger at work here - an incorrect entry >in the Yasim file, or an FDM error. I suspect something to do with the >propeller right now. IIRC Yasim doesn't model drag due to the prop yet. Rick -- Help the Waterway Recovery Group to help restore the Uks canal network Make a donation to the 'Right Tool' Appeal http://www.wrg.org.uk/cgi-bin/fmaker.pl?appeal.htm _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
