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  1. Y

    The Experimental Swedish WW2 Fighter - Saab 21

    Hello all, I took those pictures of this red SIPA Minijet in the late 1980’/early 1990’. The one bottom right was taken in its hangar at Persan-Beaumont. The others at an Air Show in Paris Le Bourget. I don’t know if it was airworthy as there was no registration marks. The other pictures shows a...
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    look at Otto Lilienthal,glider airodynamics,flight testing

    Hello, I think that Otto Lilienthal was a great pioneer that gave his life for the development of aviation. He published a book “ Birdflight as the basis of Aviation”. I have modern copy of it and it is very interesting. He experimented a lot and documented his results for others to review. Like...
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    Serious eSTOL

    I agree that STOL makes a lot of sense. they will not land in the city center but platforms may be found just outside the city. There are many GA aerodromes in the US and in Europe
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    1949 Mooney Mite M-18

    Lovely airplane. Thanks for sharing.
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    Absolutely Crazy Idea: Drone conversion

    Hello everyone, several optionally piloted aircraft have been developed recently. The links below provide examples: https://www.aurora.aero/centaur-optionally-piloted-aircraft/ https://s-plane.com/applications/optionally-piloted-isr-aircraft/...
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    Crashes in the News - Thread

    I watched with great sadness this video. my thoughts are with the families and friends May these two crews Rest In Peace. I hope that the investigation with find what happened and make recommendations to avoid such a tragedy happens again.
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    Loehle 5151-how many still around?

    Hello, I discovered a non airworthy one in an amusement park in the vicinity of Mannheim (Germany). It was registered as a microlight in Germany. Please see some pictures
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    First applications of composite material in home built or GA aircraft

    Thank you for sharing. Akaflieg are universities aviation research groups. Created in 1920, they were re-created in 1951. Today around 12 in existence. https://en.m.wikipedia.org/wiki/Akaflieg
  9. Y

    First applications of composite material in home built or GA aircraft

    Thank you all for your constructive comments. let’s hope for more of the same league
  10. Y

    First applications of composite material in home built or GA aircraft

    I am researching the application of composite materials in home built or GA aircraft. I am looking for first application cases. I have gathered information on German gliders which would place the first flight of a glider built of composites in 1958. The Wassmer WA 50 flew in 1966 in France. The...
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    German P-51????

    You are welcome. I have collected a couple of books on flight test and test pilots. I have a couple of books by Eric Brown But none by Meyer. Could you advise one? Thank you very much
  12. Y

    German P-51????

    Thank you for sharing. Great thread! Below please a nice book and some pictures from it. Heer Lerche flew numerous allied aircraft: B 17, B 24, Lancaster, Blenheim, Dragonfly, Lodestar, Hudson, Marauder, Wellington, P 39, Typhoon, Tempest, Lagg 5 FN, Harvard, P51B, P 47D, Spitfire Mk V and Yak...
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    Certification of Vertical Take Off Vehicle

    Thank you for sharing. interesting thread. in Europe there is a Special Condition for drones of less than 600kg that may be found at: https://www.easa.europa.eu/sites/default/files/dfu/special_condition_sc_light-uas_medium_risk_01.pdf The FAA has also published draft certification bases for 10...
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    Is it a question of proportions? Water hull shape and water handling?

    Thank you for sharing. Very interesting thread. the first picture presents a book in German on flying boats, amphibians and float planes. It is mostly devoted to German aircraft and range from the beginning of aviation to 1993. It includes a technical introduction from Prof. Elmar Wilczek from...
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    Design at new version of the Fournier Motor Glider

    Thank you for this great thread. Rene Fournier is a great designer highly respected in France. some of his aircraft clockwise from top left corner RF 10 RF 9 Fauvel AV22 Flying Wing RF 3 the Flying Wing is not a Fournier but a very interesting glider pictures dated 30 years ago
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    Is electric propulsion worth it?

    Thank you for sharing. I think we should see small aircraft powered by electric motors or hybrid electric by 2025. This assumption is backed by: EASA has certified a Pipistrel two seater with electric propulsion very recently MagniX, Ampaire, VoltAero havé tested existing aircraft equipped by...
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    The Future of Air Travel

    Thank you for sharing. Great post. please find two other examples: Advanced Air Mobility And Hydrogen powered aviation https://www.nasa.gov/aeroresearch/programs/iasp/aam https://www.cleansky.eu/sites/default/files/inline-files/20200507_Hydrogen-Powered-Aviation-report.pdf Concerning...
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    Barnaby Wainfan's EAA 2020 "virtual OSH" forum

    Thank you for sharing. Very interesting
  19. Y

    NASM: Lippisch DM-1 Reconsidered

    Thank you for sharing. Very interesting report
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