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Old 02-16-2019, 11:49 AM   #201 (permalink)
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Thank you, I now understand why aircraft had a hard time going past 250 mph.

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Old 02-16-2019, 01:19 PM   #202 (permalink)
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The study of the differences between bodies moving through air and water is called what?
Surfing?

The Pavati Wakeboat looks like the offspring of an M-hull and a hydroplane.


http://images.gizmag.com/hero/m80-stiletto-20.jpg


http://www.warboats.org/images/jpg/Future/M40Hull.jpg

vs


https://www.nain-schiffsmodelle.com/data/ships/0Ferrari%20Hydroplane%20RCR%20L80%20-%2004.jpg
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Old 02-16-2019, 07:58 PM   #203 (permalink)
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Quote:
Originally Posted by Piotrsko View Post
Thank you, I now understand why aircraft had a hard time going past 250 mph.
I had to double check myself, looks like my memory is intact - for now.


https://www.grc.nasa.gov/www/k-12/ai.../machrole.html
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As an aircraft moves through the air, the air molecules near the aircraft are disturbed and move around the aircraft. If the aircraft passes at a low speed, typically less than 250 mph, it is observed that the density of the air remains constant. For higher speeds, some of the energy of the aircraft goes into compressing the air and locally changing the density of the air. This compressibility effect alters the amount of resulting force on the aircraft since the aerodynamic force depends on the air density. The effect becomes more important as speed increases. Near and beyond the speed of sound, about 330 m/s or 760 mph at sea level, small disturbances in the flow are transmitted to other locations isentropically or with constant entropy. Sharp disturbances generate shock waves that affect both the lift and drag of the aircraft, and the flow conditions downstream of the shock wave. On this slide, we will investigate the dependence of the density change on the Mach number of the flow.
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Old 02-19-2019, 01:21 AM   #204 (permalink)
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You can debate if this is aerodynamic or not, cannot debate it's oddness.

MORE random pics...... - Page 4716 - Pelican Parts Forums
Might not be so comfortable to get in and out that camper module, but that looks interesting to say the least.
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Old 02-19-2019, 01:37 AM   #205 (permalink)
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https://www.classicarnews.com/2016/0...t-8-selection/

I've liked the 1961 Chevrolet Imapala bubble-top coupe since the beginning. This example is a lift-back shooting brake.
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Old 02-19-2019, 05:55 PM   #206 (permalink)
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Might not be so comfortable to get in and out that camper module, but that looks interesting to say the least.
If that angled tailgate drops down and has steps on it's upper surface it wouldn't be too bad. You might have to stoop down.

Randy Grubb finished the Magic Bus:

Just A Car Guy: Great googlamoogla, he's finished it! And installed an elevator!

Drawing to driving in 18 months. Aeronautical oddities:

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Old 02-21-2019, 12:10 AM   #207 (permalink)
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I've liked the 1961 Chevrolet Imapala bubble-top coupe since the beginning. This example is a lift-back shooting brake.
Looks kinda weird with the rear hatch not going through the entire height of the loading bay as most of the conventional wagons used to do.
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Old 02-21-2019, 02:19 PM   #208 (permalink)
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That's why I called it a shooting brake rather than a station wagon the lift-over height.

What bothers me is the curve they added. It looks odd with the hatch closed.
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Just A Car Guy: now we're talkin'. This is been named the RipnRiv, and it's out playing with Optima Challenge cars! From John Lyons fabrication, and was featured in the Riview Volume 32 #6.
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Old 02-21-2019, 05:54 PM   #209 (permalink)
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Originally Posted by freebeard View Post

https://www.classicarnews.com/2016/0...t-8-selection/

I've liked the 1961 Chevrolet Imapala bubble-top coupe since the beginning. This example is a lift-back shooting brake.
Flat beautiful. Would never have lost its appeal (had it been a production vehicle).

Virgil Exner & Son ideas for Duesenberg revival in the same direction.

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Old 02-22-2019, 10:57 AM   #210 (permalink)
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This is been named the RipnRiv,
I like it, but also like the original.

1967 Buick Riviera
https://bringatrailer.com/listing/1967-buick-riviera-2/

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