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    Challenge: Beat Strega

    G-Force / Dart air racer. Looks like the design evolved. G-Force - Dart -
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    Saunders JetHawk...Any builders?

    Matt, Thank you very much for running the numbers, I greatly appreciate it! I mistakenly wrote mixed-mode fans, when what I mean was mixed-flow fans. They're centrifugal/axial hybrid fans that have characteristics of both. Earlier in this thread you mentioned that it might be best for...
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    Saunders JetHawk...Any builders?

    Matt, I have a couple questions for you if you don't mind answering! 1) How much thrust would your coldjet produce at say 400kts? 2) Any thoughts on mixed mode fans? Thanks, Serge.
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    Form over Function

    The reason why hi-po car engines sound lumpy at idle (well one of them) is because the engines are tuned to maximize power. How do you maximize power? You spin the engine as fast as you can. Essentially the 'lumpy-hi-po-cam' moves the power (and efficiency - which you should care about) up...
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    Liberty Engine and Torsional Vibration .pdf:
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    New infusion regime for superthick laminates

    "It’s the holy grail of infusion: an unsaturated polyester or vinyl ester resin that allows unlimited flow time to vacuum infuse very large, thick parts, cures on demand and produces parts with mechanical properties equivalent to epoxy. Sound impossible? In fact, it is now a reality." New...
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    windshield material

    Orion, There are new rules for the Super Sport class. no kit requirements <4500lbs empty <1000ci for engine(s) I don't know what layout you are working with but you could conceivably use two smaller engines and get under the 1000ci limit or switch to a single engine. Cheers, Serge.
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    Why is the gossamer albatross prop angled downwards?

    I'll make a guess. Perhaps it's because the propeller is acting in the wing's downwash and giving the propeller a positive AOA lined it up better with the flowstream -> better efficiency. Shrug, Serge.
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    3D Cad (Lesson 101)

    By chance did you mean 512mB ram? Regards, Serge.
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    speed of Lite

    Please, if you may be so inclined, explain how this makes for a safer aircraft? Thanks, Serge.
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    Trace Engines L.P.

    EngineGuy, was there any investigation into thermal barrier coatings to help with thermal management issues? Thanks, Serge.
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    NLF 0414(f) on a lancair

    Take a look on the forums at these websites: Reno Air Races Aviation Photography and Airshow News Vacation At Casinos Warbird Aero Press - The Art, Action and Adrenaline of Unlimited Air Racing Therein they discuss a number of modifications to Lancair aircraft. IIRC the most beneficial is...
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    Low pass

    At around the 27sec mark in this video there is a bolt of lightning that travels between the left engine nacelle and the ground. There might have been one or two even before that, with other parts of the plane. Does anyone know how to get youtube to advance only one frame at a time? Thanks...
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    Shearwater hydroski amphib

    Shearwater Aircraft - Kitset manufacturer of a high performance four seat amphibian airplane. Just came across this while googling for 'hydroski'. Never seen this on these forums before and figured some of you would like to know about it. Cheers
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    Cory Bird's Symmetry details

    I don't see how much of the tire is exposed at the bottom of the wheel pant but it's possible that the vent tube is on the inside of wheel pant just in front of the tire. With at least a portion of the tire hanging in freestream there should be a high (relatively speaking) pressure zone right...
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    What is this airfoil called?

    A couple years ago i saw a show on tv or read an article which had pictures of a test-bed aircraft showing off a new type of wing. I remember it being a fixed multi-element airfoil. The airplane was in the air flying, one wing was normal the other wing was a combination of regular wing and...