dans2992
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Dans2992
Ok, anyone have an over/under on the likelihood of this thing making it?
http://www.cobalt-aircraft.com
http://www.cobalt-aircraft.com
It amazes me every time someone starts or funds an aircraft company. The odds of success are very, very low.
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Ok, anyone have an over/under on the likelihood of this thing making it?
http://www.cobalt-aircraft.com
Not much. They rented a huge display tent and rolled out a poorly built mock-up at Oshkosh in 2010. It was embarrassingly bad in that it was obvious they had huge dreams for their Oshkosh roll-out and the only thing that came to fruition was the big tent.
As far as I can tell, they haven't flown an airplane in the ensuing 5 years, so their progress has been slow. Slow progress + unusual planform + down market + new company doesn't stack up well.
Not saying it's true, but the owner says they have at least one flying prototype. Suspicious that there's no photos or videos of it in flight out there. Plenty of renderings but nothing that looks genuine.
Zero if they can't make their web page load.
Zero if they can't make their web page load.
I think it is a damn cool looking bird. Contrary to thoughts expressed by some, it has flown. Also, I do not know why the criticisms of its design. It looks cool and according to the reports, it flies very well.
Is it pressurized? At what altitude will we see those speeds?Heck, I've designed a aircraft.
350kts
2,000nm range
Holds 10 pax
Take off and land in 250'
Burns 1gallon per hour
I'm taking "pre-orders" now! Just send me a western union for $9,000 and I'll get you on my....waiting list.
Here's the conceptual photo.
Heck, I've designed a aircraft.
350kts
2,000nm range
Holds 10 pax
Take off and land in 250'
Burns 1gallon per hour
I'm taking "pre-orders" now! Just send me a western union for $9,000 and I'll get you on my....waiting list.
Here's the conceptual photo.
http://www.cobalt-aircraft.com/co50-valkyrie/
50 knot difference in speed going from 1 person to 5 people with bags based on their numbers. I know additional weight causes the airplane to have additional drag which reduces speed, but I was surprised by the magnitude of the reduction based on their info.
Makes no sense unless the airplane is waay behind the power curve at that weight/altitude. Even then, it makes no sense.
Half baked numbers like those further damage their credibility.
I'm an aero engineer by training and should be able to explain, but I've been in manufacturing my entire professional life and have forgotten EVERYTHING I learned in school.
That said, those numbers are reflective of my experience with my Velocity. With just me in the plane, it flew delightfully and was a truly fun plane - punched through bumps, climbed wonderfully, quick roll rate. When I added the wife, 2 kids, dog, weekend worth of luggage and 3.5 hours of fuel ... it flew like a tail heavy pig and would literally wallow though the sky. It would get us where we were going, but burn a bit more fuel and was a solid 15-20 knots slower. At gross in summer, I was 135kts. With just me, I could touch 160 kts and count on 155 kts. Additionally, it climbed horribly at gross (which, admittedly, I set).
I would argue that their numbers should boost their credibility as it is likely reflective of reality. I'd love to see one of the aero geniuses here comment on why canards are so much more sensitive to load, thou I think I can guess (canard designed for specific load, higher CL required by greater lift needed by small canard to carry greater lift means greater drag).
Anyway, I saw the numbers and came to completely different conclusion than you and was somewhat impressed that they showed the significant difference. How can that possibly help them.
Makes no sense unless the airplane is waay behind the power curve at that weight/altitude. Even then, it makes no sense.
Half baked numbers like those further damage their credibility.
That's really odd. Typically going from solo flight to max gross only results in a longer takeoff roll and slower climb performance. Cruise speed is the same.
Wouldn't it be sad if the field of aviation innovation was to become a barren wasteland, leaving us to our boxy aluminum fossils, and anything new supported only by a cheer team of grumpy nay-sayers?
I wish them well. And thank God we still have entrepreneurs and yes, those who dream.
Wouldn't it be sad if the field of aviation innovation was to become a barren wasteland, leaving us to our boxy aluminum fossils, and anything new supported only by a cheer team of grumpy nay-sayers?
Here is a brief yt of it flying:
https://youtu.be/i_YeVyW5Xlg?t=1m20s
It really isn't.
More weight = More lift required
More lift required = More induced drag
Cruise speed will always be lower with increased weight, all else being equal.
Being supportive of fellow aviators has never been our strong suit, Tim. Would like to change that.
A knot or five, yes. If you look at something like the van's aircraft site, you'll see modest drop off's in speed between different weights. The key is modest.
http://www.cobalt-aircraft.com/co50-valkyrie/
50 knot difference in speed going from 1 person to 5 people with bags based on their numbers. I know additional weight causes the airplane to have additional drag which reduces speed, but I was surprised by the magnitude of the reduction based on their info. Especially with a 350hp engine.
Looks like a cool plane though.
Stipulated.
The claim was "cruise speed is the same" (...at higher weights).
It's not.
Ok, anyone have an over/under on the likelihood of this thing making it?
http://www.cobalt-aircraft.com
Something is cross wired. See post 24. Cobalt is apparently projecting a huge speed loss at higher weights, which is counter to theory and to real world experience.