User talk:96.245.165.215

Welcome!
Hello and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Unfortunately, one or more of your recent edits to the page Blackbird (wind-powered vehicle) did not conform to Wikipedia's verifiability policy, and may have been removed. Wikipedia articles should refer only to facts and interpretations verified in reliable, reputable print or online sources or in other reliable media. Always provide a reliable source for quotations and for any material that is likely to be challenged, or it may be removed. Wikipedia also has a related policy against including original research in articles.

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I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes ( ~ ); this will automatically produce your name and the date. If you need personal help ask me on my talk page, or. Again, welcome. HopsonRoad (talk) 02:43, 26 June 2023 (UTC)

Downwind faster than the wind
Hi, you may be interested in the graph presented by the observers in their report of the Blackbird downwind-faster-than-the-wind demonstration. It shows the craft steadily gaining speed to 27.7 mph during fluctuating wind speeds of under 10 mph. Additionally, Drela demonstrates that "the DDWFTTW condition V/W > 1 is achievable with a wheeled vehicle without too much difficulty." Cheers, HopsonRoad (talk) 10:56, 26 June 2023 (UTC)


 * Hi Hopson, I am an engineer, and I have been struggling for days, literally losing sleep, over how DDWFTTW could be possible. I was convinced that it violates the laws of thermodynamics. I could not wrap my head around how so many people got duped into believing this. But I read the article from Mark Drela that you mentioned. It didn’t make sense. I printed it out and read it again. I made notes and formulas and then finally, with an audible click in my brain, I understood how it works!
 * my edit to the article was wrong and born of frustration. I just wanted to thank you kindly for your response and information (as opposed to just reverting my edit, which is what it deserved). I finally have an intuitive grasp over how this is possible. Everything is once again right in the world, thank you! 96.245.165.215 (talk) 00:12, 27 June 2023 (UTC)