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    [–] TIL Charles Darwin's grandad, Erasmus Darwin, conceived a rocket engine in 1779. It used oxygen and hydrogen for fuel, the same fuels NASA's rockets use today, 200+ years later. newtoon 3 points ago in todayilearned

    Actually, the subject is especially touchy with all the bigots who would say "AH AH ! Darwin was wrong, then !".

    It's just that neither Darwin nor Lamarck could have guessed about DNA and epigenetics stuff. So, we refer to them, but they just, with their own means, gave some insight about what could be going on. We are way beyond that now, with all the technology we use. Why always refer to them anyway ?

    Regarding the starved descendants, it seems that the effect is not going very far (in time).

    More here https://en.wikipedia.org/wiki/Lamarckism#Apparently_Lamarckian_mechanisms

    [–] Sud-Ouest so1100 Ariel newtoon 1 points ago in WeirdWings

    Yeah, I know. I was just playing on words. NOTAR is No Tail Rotor. Here, no tail rotor. That's just the name NOTAR that is not really suitable in the patented tech. Should have been mentionned Coanda effect.

    [–] Sud-Ouest so1100 Ariel newtoon 3 points ago in WeirdWings

    The low-pressure air output from the compressor was ducted to each of the three rotor blades to the ends of each blade (early NOTAR* tech therefore)

    *No Tail Rotor

    [–] Ball-Bartoe Jetwing newtoon 6 points ago in WeirdWings

    Ja, right.

    Anyway, the subsidary created for this purpose was "Ball-Bartoe Aircraft Corp". Closed after this commercial failure.

    [–] Ball-Bartoe Jetwing newtoon 19 points ago * (lasted edited 14 days ago) in WeirdWings

    What is especially interesting in that case is that the company behind this is making ... jars (https://en.wikipedia.org/wiki/Ball_Corporation) , hence the design ;) ! An employee managed to convinced the owners to build a prototype and... within a subsidiary created in the process...

    Another interesting fact is that the test pilot was very experimented and sadly died during a flight in a Constellation, not in this plane that flew quite well btw (64 km/h minimum speed !)

    [–] Ball-Bartoe Jetwing newtoon 52 points ago in WeirdWings

    The Ball-Bartoe JW-1 Jetwing was a US research aircraft flown in the 1970s to investigate blown wing technology. It was a small, mid-wing design powered by a turbofan and fitted with tailwheel undercarriage. The upper surface of the swept wings incorporated a slot along around 70% of their span, through which air from the engine's fan stage could be discharged. Mounted above this slot was a small secondary airfoil called an "augmentor", intended to direct the airflow over the wing. With this arrangement, it was found that the aircraft remained controllable at airspeeds as low as 40 mph (64 km/h).Following the test program, the aircraft was donated to the University of Tennessee Space Institute in Tullahoma. In 2007, the Jetwing was donated by UTSI to the Wings Over the Rockies Air and Space Museum in Denver, Colorado.

    + http://wasabiairracing.blogspot.com/2013/02/mojave-flight-test-1977.html

    [–] 5" racing quad. Battery keeps slipping out. newtoon 2 points ago in Multicopter

    No, no, no !!! I repeat : you just put a thin layer of hot glue ON YOUR BATTERIES. The surface then become a bit rough and sticky and the strap works really then. Otherwise, it slips like was said (classic issue). This is really cheap immediate trick. Never had an issue afterwards. weight increase is really low : you just need a very thin layer (spread it with a flat tool while it's hot).

    [–] 5" racing quad. Battery keeps slipping out. newtoon 1 points ago in Multicopter

    cheap trick : thin hot glue layer on the battery. Ugly but worked all the time.

    [–] I am a quad guy looking to get into fpv wings. I am looking for an fpv wing kit that uses a 22xx motor, 5” prop and submicro servos. The main issue ive noticed with airplanes in general is they can’t take a beating nearly like a quad can. I need a wing that can crash as many times as I typically do. newtoon 1 points ago in Multicopter

    It's time for people to understand that we are all different. I like flying SMALL stuff (because backpack), in BAD conditions (because sometimes, I want to fly when going out of work and weather not always nice). I don't care if the computer does half the job. It does it on modern combat plane and we get used to it.

    I like the "resisting" sensation on the sticks when making turns. You don't have that without stab. Period.

    I'm having fun in "restricted mode" as you say. And I hate barrel rolls...

    [–] I am a quad guy looking to get into fpv wings. I am looking for an fpv wing kit that uses a 22xx motor, 5” prop and submicro servos. The main issue ive noticed with airplanes in general is they can’t take a beating nearly like a quad can. I need a wing that can crash as many times as I typically do. newtoon 1 points ago in Multicopter

    I'm a quad guy but went in wings a year ago. So, I went for a SMALL light EPP wing (65 cm wingspan, 160 gr AUW). use an old quad motor now : RCX 2400kV 1804

    https://static.rcgroups.net/forums/attachments/5/0/4/5/4/7/a10450187-252-c180.jpg

    It can handle 20-30 km/h wind because CC3D stab. It's FPV and prefer 2S (3S is too fast for my personnal taste). I use cheap plastic 5gr servo : don't burn so often (just cut the stab after a crash !). Crashed so many times... I put memory shape foam on the nose : problem solved.

    I Even transport this plane in my backpack !

    [–] Guidemaster: One-upping the NES classic edition with the Raspberry pi 3 and Retropie newtoon 0 points ago * (lasted edited 4 months ago) in gadgets

    Oh ! I was wondering as well what was this input lag. Never had on my Retropie. But I use very cheap clones of snes controllers with USB cables. My kids loved all the NEO GEO style arcade games we could get on it. For the 40 euros all included price, this is incredible stuff. Anyone should try. This is quite easy.

    Besides, you can have Raspbian package on another card for your kids to work on this small computer that won't make you cry when it breaks, conversely to laptops.

    [–] What weighs 1250g and goes 118MPH, the Hexabeast! newtoon 1 points ago in Multicopter

    If you know the battery efficiency, it could only be a weapon for 5 minutes...

    Then, it's a piece of junk that you can smash on the floor.

    [–] What weighs 1250g and goes 118MPH, the Hexabeast! newtoon 1 points ago in Multicopter

    In that case, would not be the ideal to have air foils + inverted props ? (under and not above the arms)