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#261
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Metric Hardware ( was Aerodynamics of Towing)
On Mar 21, 7:12*pm, The Real Doctor wrote:
On 21 Mar, 23:35, Tech Support wrote: Don't bitch.The P-51, with Merlin engine, had one set of tools for engine and another set for airplane. That was back in 40's (WWII) ) Crew chief carried two bags when he went to work on bird. The Citroen 2CV came with two (I think, may have been three) spanners which allowed you to do anything up to and including a full engine rebuild. Ian The P-51, however, at least had the excuse of being a wartime project. GM, Chrysler, and (I assume) other US automakers don't have that going for them. They really do need to pick a standard and stick with it. .... and I can do everything short of a bottom end rebuild or tranny rebuild on my 36 year old BMW motorcycle with the tools in the stock tool kit plus a torque wrench. |
#262
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aerodynamics of gliding
That is a VERY good reference!!!
Mike Schumann "Martin Gregorie" wrote in message ... On Sat, 21 Mar 2009 12:28:59 -0700, The Real Doctor wrote: Incidentally, if you don't have a copy of "An Album of Fluid Motion" by Milton Van Dyke, get it. You'll love it. Every gliding club should have one. Another recommendation: http://www.av8n.com/how/ gives a good description of how an aeroplane works. A lot of it is similar to "Stick and Rudder", so its written for pilots rather than aircraft designers. However, section 3 has excellent descriptions and diagrams showing how a wing works. It was recommended to me by a professional aerodynamicist who is a model designer and has flown gliders. -- martin@ | Martin Gregorie gregorie. | Essex, UK org | |
#263
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aerodynamics of gliding
On Sat, 21 Mar 2009 16:01:33 -0700, The Real Doctor wrote:
On 21 Mar, 20:18, Martin Gregorie wrote: On Sat, 21 Mar 2009 20:01:23 +0000, Martin Gregorie wrote: On Sat, 21 Mar 2009 12:28:59 -0700, The Real Doctor wrote: Incidentally, if you don't have a copy of "An Album of Fluid Motion" by Milton Van Dyke, get it. You'll love it. Every gliding club should have one. Here's a link to animated visualizations of the flow past a wing:http://www.av8n.com/irro/- click the flag of your favored language to see the visualizations. I've never really liked that Joukowski transform stuff. The arbitrary definition of circulation worries me, and anyway no real wing behaves anything like that. It's a fair way of visualising the flow, roughly, but I prefer to jump straight into circulation theory and model my wings as vortices. You're way beyond me there. I can choose suitable, matched wing and tail sections for competition free flight models, which requires some understanding of Rn effects and the usual section performance diagrams and data. I also know a little about the use of turbulators and tip shapes. As I've ended up with decently performing and stable, flyable models I must be doing something right. However, thats as far as I go. -- martin@ | Martin Gregorie gregorie. | Essex, UK org | |
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