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  1. P

    Ultimate SI for u/l, EAB

    Oh boy, am I WAY out of my comfort zone on this topic. BUT: not something I would ever take on - wrong fuel for me, too old to start from scratch - but IMHO....and emphasis on my OPINION (for what that's worth) we are missing an ultra simple, ultra light, reasonably cheap engine the could...
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    Icon goes t/u

    https://www.avweb.com/aviation-news/icon-files-for-chapter-11-bankruptcy-protection-pledges-transparency/?MailingID=FLY240404025&utm_campaign=avwebflash&utm_medium=newsletter&oly_enc_id=1249B7846512C5V Somehow I am not very surprised. Assume the Chinese shareholders will scoop up the remains...
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    Rethinking Propellers?

    When slipping down a YouTube rabbithole on current high tech fan engines - particularly those with external fans with stators and external counter rotating (i.e. not ducted) fans, the peculiar blade shape of latest fans...
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    Doroni FAA Cert???

    Couldn't find any recent threads on Doroni, but ran across this on my news feed...
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    Blended Wing and Hydrogen Power

    Doing calendar year end panic stuff, so have to take the odd break. In one, I ran into the pages for a company that wants to build blended wing autonous cargo fleets. Seems pretty flakey to me, and truly amazing they can raise the money. Anyone know much about this company...
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    Synergy Prime Anyone??

    Has anyone done much research and have any opinions about Synergy Prime design? https://en.wikipedia.org/wiki/Synergy_Aircraft_Synergy Their video makes some truly outlandish claims...
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    Ultimate Barn Find - Sky Scout

    I hope other frequent the Classics forum, as I think this IS the appropriate place to post https://thestarphoenix.com/feature/an-ultimate-barn-find-the-long-winding-search-and-saskatchewan-discovery-of-an-historic-airplane I have a lot of interest in this, since I know the yard well where it...
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    Flying Magazine

    In watching the business group buy up Flying and everything else they can lay their hands on, I greatly fear the whole shebang is going to be run by a bunch of B school grads who have no idea what an airplane - or at least a recip - is. Bertorelli leaving Avweb is IMHO a portent of things to...
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    Dimpling Stress Thoughts

    Watching the whole Van's laser thing happening reminded me of a thought train I had when building aluminum boats. Most of my stuff was welded, but my chine keels were a 1/8" 5052 weldment riveted to the floor and gunwhale skins by countersunk rivets in machined counterbores. Everything in...
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    Velie and Blackburne Engines

    I am familiar with the Blackburne name from the world of British motorcycles, but have never seen this tiny 3 banger jewel they once made. The other one: Velie was a car, airplane and engine manufacturer I have never before encountered: Thanks to those who research and write stuff to put up...
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    Most Impressive Technical Video....EVER!

    yeah, yeah....youtube and not about airplanes. So sue me. I have yet in my life seen anywhere, anyhow, any time such an incredibly well done presentation. Extra bonus: I probably knew 10% of what was on it, maybe 20% now so I guess I need to watch it 8 more times. And I probably will.
  12. P

    Power/weight comparative standards?

    With all of our discussions around engine types, configurations, sources, etc. it occurs to me that we should have some kind of "standards" with easy reference mileposts to be able to relate one power system to another. Let me first advance a couple of suggested values. Bare Engine: dry...
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    Ampere engines anyone?

    Please forgive my relative ignorance as I left the world of 2 stroke spark ignition 35 years ago. Our efforts were either airboats or "advanced ultralights" so all big engines. Hang around the 100HP compression ignition world these days. I guess I am proclaiming to be aware and curious, but...
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    Ducted, Coreless Fan??

    What say the cumulative knowledge and experience with propellors/fans???
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    materials supplier

    Anyone have or know of a material supplier that specializes in or has experience with laminates for springs/gear legs?
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    Sad Day for the HBA Community

    Just had an e-mail from one of my flybuddies. HBA long time member CraftSven (Sven Talo) passed away at his home on Setting Lake about 50 miles South of Thompson MB. Sven had designed and built 12 aircraft from scratch, some including the last - his 8 place 900 HP turbine float plane in a...
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    Our Small Genav World

    Last weekend, I had an emergency callout to a gas plant near Rimbey AB. It was a curious callout but client wanted my personal attention to his customer for a warranty issue. Curious because he knows we have another person living just down the road, even more of a thing since that guy's former...
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    Out of Great Respect

    Everyone probably saw this on the Tuesday night news, but just wanted to tip my hat to one of the greatest airplanes ever built - the 747. The first one flew in '69 (will just leave that one at that) and the first fully certified was delivered at the start of '70. We were married that summer...
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    Conversation with Battery Designer

    Anyone who reads my posts knows I am extremely opposed to BEVs in aviation. There is simply no known or even imagined technology that can give sufficient energy density to meet aviation needs outside of extremely short duration/low payload missions. On top of that, the current infatuation...
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    Adam 500

    We were watching an episode of Mayday/Air Crash Investigation/Air Disasters yesterday and in the background of the hangar being used for filming was the one and only Adam 500. I read some Wiki and other stories on line, but now curious about the actual design of the airplane. Sounds as if the...
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