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Old 08-08-2007, 02:34 PM
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funkworks
 
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Default RE: SR-71 prop jet project

...well. Today has been kinda slow so I started drawing out a lil blackbird to test out my CG calc and some mixing options. I think Im getting close to something and maybe I can start building soon. So far.. Ive got a hand launched model that spans 32 inches and is almost 50 inches long (more like throwing a spear than a plane ). It will be powered by two .25's at the front of each nacelle. My target weight will be 5.5lbs which will give me a wingloading of about 23oz/sq ft. I chose the .25s because I already have one that is new in the box that I planned to use for something else. I decided against a pusher because I wanted to see the effects of prop wash over the surfaces... I can send a copy of my lil blackbird drawings if folks are interested in building along with me...