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Search took 0.01 seconds. Search: Posts Made By: sregord
Forum: Aerodynamics 01-22-2024, 05:53 PM
Replies: 218
Views: 24,037
Posted By sregord
Sounds like a big trapeze. All, even...

Sounds like a big trapeze.



All, even aluminum sheet, would...should have some focus'd protection from the wheel wells, well secured leading edges that face especially forward, but also left,...
Forum: Aerodynamics 01-03-2024, 11:03 AM
Replies: 218
Views: 24,037
Posted By sregord
yes, splash or spray or any other...

yes, splash or spray or any other debris...wouldn't that be the case with any bellypan ...coroplastic, ABS, marine plywood or aluminum.
Forum: Aerodynamics 12-19-2023, 08:10 PM
Replies: 218
Views: 24,037
Posted By sregord
EcoModder Forum > EcoModding > Aerodynamics...

EcoModder Forum >
EcoModding >
Aerodynamics >
Class a motorhomes aerodynamics

Let me start ALL over.....;)
COULD "recycled" Hypalon-impregnated aerospace fabric(Billboard Tarp) be used as a...
Forum: Aerodynamics 12-19-2023, 05:14 PM
Replies: 218
Views: 24,037
Posted By sregord
'impermeable' membranes?

Thank you aerohead.
I know I didn't describe the concept well ...as "fabric". of course you, freebeard, & I were discussing inflatable boattails back at 5-22-22 in this stream..where I mentioned...
Forum: Aerodynamics 12-13-2023, 11:49 PM
Replies: 218
Views: 24,037
Posted By sregord
Stretched fabric

As before I failed to explain the reference
instead of hard plastic, wood or metal to “enclose” (create a flat bottom) the large underside of a 32 foot RV, could it be done similarly to a fabric...
Forum: Aerodynamics 12-13-2023, 08:10 PM
Replies: 218
Views: 24,037
Posted By sregord
BETTERFLOW Unterbodenverkleidung LowFLOW

Greetings
Sorry I dropped the ball here.
Pesky prostate distraction has had me surfing elsewhere.
...and Moby has been on the CL for most of the summer.

I was curious what you all thought about...
Forum: Aerodynamics 04-03-2023, 11:55 PM
Replies: 218
Views: 24,037
Posted By sregord
Ah... wheels on the ground. So an extended...

Ah... wheels on the ground.
So an extended (Mair 1.9 diameter) boattail should be a trailer...a la ...
Forum: Aerodynamics 04-01-2023, 02:11 AM
Replies: 218
Views: 24,037
Posted By sregord
Side gusts on a 4' long addition to a 32' -...

Side gusts on a 4' long addition to a 32' - 18,000# Moby was not something I would've had on my radar.
Was there a noticeable side-wind redirect with your boat-tail trailer? Is there less...
Forum: Aerodynamics 03-27-2023, 03:00 PM
Replies: 218
Views: 24,037
Posted By sregord
https://fleetengineers.com/shop/aeroflap-aerodynam...

https://fleetengineers.com/shop/aeroflap-aerodynamic-mud-flap/
I suggest this is what is implied.
Forum: Aerodynamics 03-26-2023, 11:22 PM
Replies: 218
Views: 24,037
Posted By sregord
No, the long boxy square on the skoolie does not....

No, the long boxy square on the skoolie does not. Shows only that an extension length is possible with an exceptable departure angle. I have no plan to go that long.

The geometry of the square to...
Forum: Aerodynamics 03-25-2023, 11:35 PM
Replies: 218
Views: 24,037
Posted By sregord
I know I need to build a scale model. It may...

I know I need to build a scale model. It may convince me that no extension is doable. I get back to my shop next month.
No argument that its a long ways back there from the drivers seat with even...
Forum: Aerodynamics 02-03-2023, 06:34 PM
Replies: 218
Views: 24,037
Posted By sregord
Fiberglass rods like for those "curved" in...

Fiberglass rods like for those "curved" in camping tents?...use like hoops on an articulated bus /conestoga wagon, straight sided & top with radius-ed corners....folds up accordion like.
Forum: Aerodynamics 01-26-2023, 07:15 PM
Replies: 218
Views: 24,037
Posted By sregord
adjustable(angle of attack). I hadn't thought...

adjustable(angle of attack).
I hadn't thought of changes demanded by brakes or acceleration...
more watching the MPG /HP demand from an Ultragauge to see if a change in the angle of attack made a...
Forum: Aerodynamics 01-26-2023, 04:58 PM
Replies: 218
Views: 24,037
Posted By sregord
Actually the Tropfewagen's "fenders" are closer...

Actually the Tropfewagen's "fenders" are closer to what I had in mind.
https://ecomodder.com/forum/member-freebeard-albums-concepts-picture4984-a.jpg
Forum: Aerodynamics 01-26-2023, 11:27 AM
Replies: 218
Views: 24,037
Posted By sregord
I guess the simplest example would be the canards...

I guess the simplest example would be the canards on the front of a Rutan Long-EZ ....although they are too long (extended perpendicular from the side surface) & the cord of the airfoil could be...
Forum: Aerodynamics 01-23-2023, 06:26 PM
Replies: 218
Views: 24,037
Posted By sregord
Class A motorhome

Hey there, I've been away...
First distracted with work(I'm retired as of January 1, 2023).
and then this Atmospheric River hit us in Reno/Virginia City pretty hard. New Year's storm snow was so...
Forum: Aerodynamics 12-01-2022, 02:03 PM
Replies: 218
Views: 24,037
Posted By sregord
All good stuff. I'm wandering a bit in the :...

All good stuff.
I'm wandering a bit in the : Aeromodifications for large motorhome ...stream.
Very nice photoshop rendering by Botsapper...
...and your Reverse-Engineering Randy's motorhome..mod...
Forum: Aerodynamics 11-29-2022, 07:55 PM
Replies: 218
Views: 24,037
Posted By sregord
I once saw..I think.. but now cannot find. an...

I once saw..I think.. but now cannot find. an aerodynamic posting showing a gun turret on a BlackWidow...as a great example shape for a AC fairing/shroud. Anyone else come across it?
Aerohead: your...
Forum: Aerodynamics 07-25-2022, 06:35 PM
Replies: 218
Views: 24,037
Posted By sregord
Single best stress reliever when driving Moby... ...

Single best stress reliever when driving Moby...
Marked windshield, where the lane lines are, with orange tape.

Its the parking lots, gas stations & sharp turns on narrow road intersection where...
Forum: Aerodynamics 07-25-2022, 05:56 PM
Replies: 218
Views: 24,037
Posted By sregord
We had our annual family "camping" trip, this...

We had our annual family "camping" trip, this last weekend. First time Moby with a brain(UltraGauge) that communicated. Down from VirginiaCity(6000'asl) to Reno(4478'asl) to Stampede Res(5954'asl)...
Forum: Aerodynamics 07-25-2022, 05:40 PM
Replies: 218
Views: 24,037
Posted By sregord
I've added the EAEC2011_B10.pdf to my reading ...

I've added the EAEC2011_B10.pdf to my reading
https://www.researchgate.net/publication/279059457_Environmental_impact_of_aerodynamic_optimizations_at_heavy_duty_commercial_vehicles
Has many of the...
Forum: Aerodynamics 07-21-2022, 08:04 PM
Replies: 218
Views: 24,037
Posted By sregord
That's the one...VG's are the solution to all...

That's the one...VG's are the solution to all that is wrong with the pudgy C-130:rolleyes:



the white 1" Sch40...yes. It looks like the local HD only sells Sch40...10 & 20' lengths
Great...
Forum: Aerodynamics 07-21-2022, 05:45 PM
Replies: 218
Views: 24,037
Posted By sregord
So ..I'm headed to HomeDepot for 8 pieces of 1"...

So ..I'm headed to HomeDepot for 8 pieces of 1" pvc pipe.
strap them to the 4 corners of Moby with corner tees on the other end, wire then together & pull until I'm at 20*.

You guys are great. to...
Forum: Aerodynamics 07-21-2022, 05:33 PM
Replies: 218
Views: 24,037
Posted By sregord
:)surface of discontinuity in reverse =...

:)surface of discontinuity in reverse = backward's-facing step
I like it.
Seems to be alot of pouching of graphics in aerodynamic.
I found this one in the: Alternative approaches to rear end drag...
Forum: Aerodynamics 07-21-2022, 04:52 PM
Replies: 218
Views: 24,037
Posted By sregord
The Continuum Dynamics tail

I'm not finding a "Continuum Dynamics tail"..but "... aerodynamic backward's-facing step" is plentiful. These only show the step(off) surface & the reattachment zone surface being parallel... except...
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