25 Apr 2024, 13:32 [ UTC - 5; DST ]
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 07 Jan 2020, 15:45 |
|
|
|
|
Joined: 09/03/18 Posts: 88 Post Likes: +39 Company: Alaskan AirVentures
Aircraft: Liberty XL
|
|
Don't know about headroom, nor legroom, but as long as it doesn't have a center console, a 43" cockpit width is (barely) adequate for me.
Overall, I don't think my skills will ever be adequate for safe operation of this plane.
I don't know who said it first, but "Just because you can afford a plane doesn't mean you should by and fly it!"
I do wish them all the best, and as other posters have said, they have a better chance than the Raptor crew.
_________________ Ad Astra, Per Aspera To the stars, through difficulty
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 09 Jan 2020, 18:13 |
|
|
|
|
Joined: 09/16/10 Posts: 40 Post Likes: +27
Aircraft: A36
|
|
This is going to be one expensive lawn dart if they don't somehow address low speed handling. That wing will be unforgiving and bite you in a second. I am just going by the photo. I would suggest -
* Wing cuff to tame the stall * Speed brakes * High gear extension speeds * Slotted Fowler flaps
And yes I know these will add weight!
It's not going to fare well in turbulence or light icing. It's light weight and high aspect-ratio wing will be a handful.
That being said I hope they pull this off and disrupt the entire industry.
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 09 Jan 2020, 19:38 |
|
|
|
|
|
Joined: 09/29/10 Posts: 5681 Post Likes: +4873 Company: USAF Simulator Instructor Location: Wichita Valley Airport (F14)
Aircraft: Bonanza G35
|
|
Username Protected wrote: So this seems pretty comparable to the old Lancair 360. The 360s ran parallel valve 360s and getting 200 knots was pretty normal. I don't think and extra 20hp pushes it to 235knots and that thing was pretty aerodynamically slippery... There’s no secret to speed: take a big engine and wrap the smallest, lightest, sleekest airframe around it. Technology can make that big engine lighter or that airframe lighter and sleeker but the basic formula still holds.
_________________ FTFA RTFM
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 09 Jan 2020, 20:35 |
|
|
|
|
Joined: 09/06/11 Posts: 791 Post Likes: +387
|
|
Username Protected wrote: This is going to be one expensive lawn dart if they don't somehow address low speed handling. That wing will be unforgiving and bite you in a second. I am just going by the photo. I would suggest -
* Wing cuff to tame the stall * Speed brakes * High gear extension speeds * Slotted Fowler flaps
And yes I know these will add weight!
It's not going to fare well in turbulence or light icing. It's light weight and high aspect-ratio wing will be a handful.
That being said I hope they pull this off and disrupt the entire industry. TBM Mooney addressed the cruise to stall speed ratio by doing a 90% Fowler flap with a small aileron and spoiler on design- the MU2 wing addressed the same thing minus the aileron.
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 09 Jan 2020, 21:40 |
|
|
|
|
Joined: 11/22/12 Posts: 2605 Post Likes: +2367 Company: Retired Location: Lynnwood, WA (KPAE)
Aircraft: 1993 Bonanza A36TN
|
|
Username Protected wrote: This is going to be one expensive lawn dart if they don't somehow address low speed handling....I would suggest - * Speed brakes It has one, the rudder splits a la the space shuttle. Quote: * Slotted Fowler flaps I agree. Their use of split flaps is where they lost me. There's a reason nobody puts those on new designs anymore. They clearly don't care about a low approach speed. It seems they're just rehashing the Lancair and we know how that accident rate turned out.
Last edited on 10 Jan 2020, 00:13, edited 2 times in total.
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 09 Jan 2020, 23:58 |
|
|
|
|
Joined: 06/17/14 Posts: 5023 Post Likes: +1954 Location: KJYO
Aircraft: C-182, GA-7
|
|
Username Protected wrote: So this seems pretty comparable to the old Lancair 360. The 360s ran parallel valve 360s and getting 200 knots was pretty normal. I don't think and extra 20hp pushes it to 235knots and that thing was pretty aerodynamically slippery... There’s no secret to speed: take a big engine and wrap the smallest, lightest, sleekest airframe around it. Technology can make that big engine lighter or that airframe lighter and sleeker but the basic formula still holds.
It looks a lot like a larger version of Nemesis! I can't afford the time to stay ahead of the plane and my reflexes are too slow, so I bought the T-Shirt!
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 23 Jan 2020, 14:00 |
|
|
|
|
Joined: 08/10/15 Posts: 541 Post Likes: +177
Aircraft: PA-18 & 206
|
|
Username Protected wrote: The photo of the airframe with the two guys standing next to it, show how tiny this thing is. Empty weight of 750lbs! Total gross of 1500lbs. The engine is interesting. It's only 200hp, 5.2 liter, 6-cylinder and only weighs 108kg (238lbs). About 120lbs lighter than an IO360. No turbo, so power output will be low at the listed ceiling of 20,000'. Don't know this engine at all, but it looks interesting. https://ulpower.com/en/engines/ul520/ul520isThat means the entire airframe sans engine will weigh 512lbs. Gotta applaud a couple of young guys tackling a project like this, and I hope they're successful. The dimensions work out to about the same as a Lancair Legacy, though maybe 300 pounds pounds lighter. I suppose that it's possible that 21st century manufacturing helps them make a design that saves so much weight. On the other hand, this is their engine mount. I don't see how the hell this structure is going to be nearly strong enough to hold on to an engine in any but the gentlest flight conditions. Attachment: engine mount.jpg
I don't know how that mount will handle any torsional loads. Looks like the bearing surface load path to the outside of the fuselage is suspect.
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 23 Jan 2020, 16:38 |
|
|
|
|
Joined: 03/01/18 Posts: 858 Post Likes: +645
Aircraft: V35
|
|
I would hope they have a chance to read this thread and work on issues like the motor mount as overall the design looks very promising.
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 23 Jan 2020, 22:59 |
|
|
|
|
|
Joined: 02/28/17 Posts: 1214 Post Likes: +1193 Location: Panama City, FL
Aircraft: Velocity XL-RG
|
|
Username Protected wrote: Anyone one taking bets on Raptor vs. Darkaero? :7) I give it even money. The Darkaero guys are like the Raptor guy at about that stage.
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 01 Sep 2020, 01:03 |
|
|
|
|
Joined: 06/17/14 Posts: 5023 Post Likes: +1954 Location: KJYO
Aircraft: C-182, GA-7
|
|
Following their work the past few months, they are doing a really good job. Their nose gear looks quite a bit sturdier than the Raptor nosegear. Then again, DarkAero has the engine up front with a tricycle gear configuration. It will be interesting to see if they offer a conventional gear option since Nemesis NXT had conventional gear.
|
|
Top |
|
Username Protected
|
Post subject: Re: Darkaero? Posted: 01 Sep 2020, 13:49 |
|
|
|
|
Joined: 01/04/17 Posts: 107 Post Likes: +35
|
|
Username Protected wrote: Anyone one taking bets on Raptor vs. Darkaero? :7) My bets are on Dark Aero.
|
|
Top |
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum
|
Terms of Service | Forum FAQ | Contact Us
BeechTalk, LLC is the quintessential Beechcraft Owners & Pilots Group providing a
forum for the discussion of technical, practical, and entertaining issues relating to all Beech aircraft. These include
the Bonanza (both V-tail and straight-tail models), Baron, Debonair, Duke, Twin Bonanza, King Air, Sierra, Skipper, Sport, Sundowner,
Musketeer, Travel Air, Starship, Queen Air, BeechJet, and Premier lines of airplanes, turboprops, and turbojets.
BeechTalk, LLC is not affiliated or endorsed by the Beechcraft Corporation, its subsidiaries, or affiliates.
Beechcraft™, King Air™, and Travel Air™ are the registered trademarks of the Beechcraft Corporation.
Copyright© BeechTalk, LLC 2007-2024
|
|
|
|