21 Oct 2025, 10:54 [ UTC - 5; DST ]
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Post subject: Re: Otto Celera 800 Posted: 23 Jan 2024, 20:50 |
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Joined: 11/22/12 Posts: 2899 Post Likes: +2873 Company: Retired Location: Lynnwood, WA (KPAE)
Aircraft: Lancair Evolution
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On another site a poster reported that the highest speed they saw by the Celera prototype was 217 knots (ground speed) at 17,000', a long way short of the claims.
I agree, it looks like another Moller.
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Post subject: Re: Otto Celera 800 Posted: 20 May 2025, 00:53 |
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Joined: 11/22/12 Posts: 2899 Post Likes: +2873 Company: Retired Location: Lynnwood, WA (KPAE)
Aircraft: Lancair Evolution
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Username Protected wrote: https://www.avweb.com/https/www.avweb.com/multimedia/votw/best-of-the-web-laminar-flow-revolution/ They say the Celara 500 flight tests proved their concept, but so far as I know, they've never released the data to back that up. Until they do, it's a pig in a poke.
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Post subject: Re: Otto Celera 800 Posted: 20 May 2025, 09:36 |
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Joined: 07/11/14 Posts: 1469 Post Likes: +422 Location: 46U
Aircraft: C182, Lancair IV-P
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I give this team a lot of credit. Why divulge everything, particularly if working on own dime? Time will tell but I’m on the optimistic side.. Who will buy is another question? Best, Tom
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Post subject: Re: Otto Celera 800 Posted: 01 Jun 2025, 00:40 |
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Joined: 11/15/17 Posts: 1172 Post Likes: +607 Company: Cessna (retired)
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Sort of reminescent of Jim Bede.
I once visited a Bede open house at the Newton, Ks airport and saw both the prop and jet Bd-5's fly.
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Post subject: Re: Otto Celera 800 Posted: 01 Jun 2025, 00:42 |
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Joined: 11/15/17 Posts: 1172 Post Likes: +607 Company: Cessna (retired)
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Username Protected wrote: Laminar flow isn’t the controlling issue while flying at high sonic/supersonic speeds.
It’s the drag bulge at the wing fuselage intersection (solvable by area ruling). The airplane shown in the video is going to run into the same wall every other design in the last 50 years has.
Even the Concorde couldn’t overcome the issue, so they used brute force (I.e., 4 turbojet engines) to fly supersonic. And with afterburners to get past the drag rise bump near Mach 1.
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Post subject: Re: Otto Celera 800 Posted: 09 Jun 2025, 12:47 |
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Joined: 01/22/11 Posts: 1931 Post Likes: +2779 Location: Fort Worth TX
Aircraft: EMB 505, C421
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Not buying it at all. The transonic drag issue involves sound shock waves that disrupt airflow. Nothing in this presentation discusses that as best I can tell. Look at the junction between the wings and rather fat fuselage. Transonic drag issue. Whitcomb addressed this at NACA over 50 years ago.
Best of luck to them but I'm not holding my breath.
Chris C.
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Post subject: Re: Otto Celera 800 Posted: 17 Jul 2025, 18:01 |
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Joined: 08/05/16 Posts: 3151 Post Likes: +2294 Company: Tack Mobile Location: KBJC
Aircraft: C441
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Username Protected wrote: I give this team a lot of credit. Why divulge everything, particularly if working on own dime? Time will tell but I’m on the optimistic side.. Who will buy is another question? Best, Tom Their video is impressive in that they got through the whole thing without saying anything at all. It reminds me of those power saver devices: https://www.youtube.com/watch?v=yw6mf2sWk2k(skip to 3:00) The latest application of the formula: 1. Pick a fancy term that is legitimate, but not well understood by most people 2. Claim you are using it for a breakthrough, which you describe in vague terms 3. Collect money Whatever happened to the last guy that used the area rule to design a new airplane? As I remember he crashed in a corn field, but had some new project that was equally groundbreaking. I like the spin on their diesel version - er I mean the development version for the jet. They failed up!
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Post subject: Re: Otto Celera 800 Posted: 28 Sep 2025, 22:31 |
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Joined: 08/10/14 Posts: 1790 Post Likes: +865 Location: Northwest Arkansas (KVBT)
Aircraft: TBM850
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I saw a full size mockup of this at an airshow today. It is a super-mid class with 9+2 seats. The rep told me they hold laminar flow to about where the door is and 90% or something like that on the wing. Mach .8 at FL510 on 120gph. Anyway, it appears they are about to start manufacturing. https://www.manufacturingdive.com/news/ ... 00/750956/
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Post subject: Re: Otto Celera 800 Posted: 29 Sep 2025, 06:39 |
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Joined: 02/28/17 Posts: 1344 Post Likes: +1426 Location: Panama City, FL
Aircraft: Velocity XL-RG
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So they're going to start production on an aircraft that hasn't flown yet? Or has it flown and they didn't tell anyone?
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