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  1. #421
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316
    Got some great test flights in today, the XL-5 was perfect as is, one flight and done. The UFO was tail heavy, I needed two flights to get it to be less pitchy on boost, and then toned the throws on pitch down a bit more for the next two flights, the glides were outstanding, had about an 8 mph constant breeze and it would just hover in place, looked great.

    Frank


  2. #422
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316
    George Rachor got a cell phone video of flight number 2 on the UFO, still slightly tail heavy and a bit too munch control throw, but you can see the glide is pretty good.



  3. #423
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316
    Some pics of the three
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  4. #424
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316

  5. #425
    Join Date
    16th August 2016
    Location
    Paragould, Arkansas USA
    Posts
    396
    Does the UFO Invader hint at any further 'enterprises'?
    "Lock S-foils in attack position....."

  6. #426
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316
    Funny you should mention that, was drawing this up this morning...Sort of a flyable take on a USS Atlantis....I sort of liked the Atlantis idea, but to have the upper middle disk in an area that was behind the flight cg meant I had to use a single warp engine, which also helps reduce some tail weight.

    Quote Originally Posted by Crawf56 View Post
    Does the UFO Invader hint at any further 'enterprises'?
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    Last edited by burkefj; Yesterday at 07:36 PM.

  7. #427
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316
    Finished construction and did some glide tests to confirm CG, looks like it might work. Need to think about trim and the little fiddly bits on the warp engine...2.6" diameter, warp engine is 1.6", length is 35.3" and wingspan is 22". 7.25 oz dry now.

    Frank
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  8. #428
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316
    Here it is with some fiddly bits.... Decided the bridge would be in the middle and the front would have the radar dish.....since I didn't want the nose to be a cockpit...
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  9. #429
    Join Date
    14th July 2015
    Location
    Randolph, NJ
    Posts
    3,558
    I think the radar dish in the nose looks out of place.... but otherwise, awesome. Love the UFO as well.

  10. #430
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316
    I was torn, the plain rounded nose looked like it wanted a cockpit, but that didn't fit, I think once the dish is painted it won't look so bad, I spent the evening hand cutting markings, didn't turn out too bad.
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  11. #431
    Join Date
    16th August 2016
    Location
    Paragould, Arkansas USA
    Posts
    396
    "Lock S-foils in attack position....."

  12. #432
    Join Date
    9th March 2018
    Location
    Arizona
    Posts
    54
    Quote Originally Posted by burkefj View Post
    I did a torture test yesterday, 10 flights on E-20PW rocket motors, these give about a 150mph boost speed, and unless the glider is perfectly trimmed it would be a disaster since there is no time to steer I don't recommend these motors as they are more expensive per flight and don't get you any higher altitude, just a bigger scare on boost These are still branded by aerotech as E-15PW but the new ones with yellow extended forward ejection well and built in thrust ring are now actually E-20PW which a shorter burn, lower total impulse but higher peak.

    Will these aircraft/ rockets come to market and are the flight controls R/C?

  13. #433
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,316
    Yes, and yes, click on the link in my signature and you can read all about them.

    Quote Originally Posted by FlyBy01 View Post
    Will these aircraft/ rockets come to market and are the flight controls R/C?


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