18 Apr 2024, 22:51 [ UTC - 5; DST ]
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 10 Nov 2019, 22:21 |
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Joined: 01/18/11 Posts: 7689 Post Likes: +3686 Location: Lakeland , Ga
Aircraft: H35, T-41B, Aircoupe
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I know five crazy people, i am two of them. I must be bipolar I once was fast, then i gained weight.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 11 Nov 2019, 01:43 |
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Joined: 02/04/18 Posts: 152 Post Likes: +32
Aircraft: C180
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The Celera 500 apparently flew for the first time this week. Size differnces aside, could this possibly achieve the type of breakthrough gains that the Raptor project was/is trying to deliver.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 11 Nov 2019, 06:15 |
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Joined: 05/11/10 Posts: 12403 Post Likes: +11412 Location: Indiana
Aircraft: Cessna 185, RV-7
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Username Protected wrote: OK, I give up. What happened?? That cat moved on to another sandbox, I suspect.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 11 Nov 2019, 08:56 |
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Joined: 01/18/11 Posts: 7689 Post Likes: +3686 Location: Lakeland , Ga
Aircraft: H35, T-41B, Aircoupe
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The dreaded reverse polarity
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 11 Nov 2019, 09:55 |
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Joined: 02/28/17 Posts: 1213 Post Likes: +1191 Location: Panama City, FL
Aircraft: Velocity XL-RG
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No, it's ugly. And it's going to have to takeoff and land on an almost flat attitude given the location of the main gear and the prop clearance. I'm really curious about the planned 400kts at 65,000' with 30-40MPG with a prop and reciprocating engine. I thought a turbines are most efficient at those altitudes.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 11 Nov 2019, 11:24 |
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Joined: 11/06/10 Posts: 11898 Post Likes: +2854 Company: Looking Location: Outside Boston, or some hotel somewhere
Aircraft: None
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Username Protected wrote: No, it's ugly. And it's going to have to takeoff and land on an almost flat attitude given the location of the main gear and the prop clearance. I'm really curious about the planned 400kts at 65,000' with 30-40MPG with a prop and reciprocating engine. I thought a turbines are most efficient at those altitudes. Don, I am way outside my wheel house. From what I understand from physicists and mechanical engineers; there is currently no hypothetical or theoretical turbine which can match the fuel efficiency of a piston. The problem with piston engines is the complexity and the associated reliability issues. Assuming I follow the logic; when you have a flame front and the associated expansion of the fuel in a piston you push against a defined container with solid surfaces. While in a turbine, the flame front is pushing against air. Air offers significantly less resistance, therefore it has less ability to convert to mechanical energy. Tim
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 11 Nov 2019, 14:23 |
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Joined: 09/29/10 Posts: 5681 Post Likes: +4872 Company: USAF Simulator Instructor Location: Wichita Valley Airport (F14)
Aircraft: Bonanza G35
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Username Protected wrote: I have never heard of the Celera 500 until today. I don't know anything about it but to me that this is UGLY. Maybe I am the only one. I hadn’t either. In my book, Otto Aviation Group is going about this the right way: don’t make any announcements until you have something concrete to announce. I wonder where they are getting their funding? FWIW, I don’t think the Celera is ugly but I can see why some hide-bound traditionalists might think so.
_________________ FTFA RTFM
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 11 Nov 2019, 14:53 |
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Joined: 05/03/18 Posts: 821 Post Likes: +424
Aircraft: 182P
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Username Protected wrote: I have never heard of the Celera 500 until today. I don't know anything about it but to me that this is UGLY. Maybe I am the only one. I hadn’t either. In my book, Otto Aviation Group is going about this the right way: don’t make any announcements until you have something concrete to announce. I wonder where they are getting their funding? FWIW, I don’t think the Celera is ugly but I can see why some hide-bound traditionalists might think so.
Am I the only one with a Celera flashback to the X-1?
_________________ http://welch.com/n46pg/
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