Building an HPV Fairing

[Veikra]

Cool, We make human powered submarine , same principles

[trebuchet03]

Originally Posted by Veikra

Cool, We make human powered submarine , same principles

Ahh man, you can't post that and not provide a link - or at least pictures That sounds AWESOME! Is it the sort of thing you have to wear SCUBA (I'm padi certified, and I've always wanted to ride in something like that )?

[cbergeron]

Remember the teardrop, brother!
(falling into the direction you want to travel, that is)

[Funny]

This is an amazing project, and an inspiration to us all. If we could have aero nuts like the people on this website designing our cars, we would have seen 100 MPG production cars decades ago. We will be rooting for you on the 25th, good luck!

[Christopher Jordan]

Originally Posted by Veikra

Cool, We make human powered submarine , same principles

thusly?

countersTrike

[MetroMPG]

Treb, FYI: http://www.bhpc.org.uk/forum/forum_posts.asp?TID=1940

[LostCause]

I don't know when you competition is, but good luck.

- LostCause

[cbergeron]

Have you and your team even considered inverting that design laterally?
I'm a bit late on this thread, so I apologize if this has been answered before... The air fluidity from the front clearly showed a LOT of turbulence in the sidewall midsection. If you inverted your design, you'd reduce that drag to a fraction of what it is.
Granted, you'd increase turbulence at the rear, but I would think that it would be a much smaller at that point.

[trebuchet03]

Originally Posted by cbergeron

Have you and your team even considered inverting that design laterally?
I'm a bit late on this thread, so I apologize if this has been answered before... The air fluidity from the front clearly showed a LOT of turbulence in the sidewall midsection. If you inverted your design, you'd reduce that drag to a fraction of what it is.
Granted, you'd increase turbulence at the rear, but I would think that it would be a much smaller at that point.

I accidentally ran CFD the simulation backwards on my first run (for some reason the coordinate system was/is reversed).... While the oil flow lines looked nicer - there was slightly more drag (but only slightly).... But, even so - we wouldn't fit! It's really hard to fit a human - pointing forward - with pedal path considerations AND be aerodynamic The prone position (laying on your front - head first) would be more aerodynamic, but the prone position isn't as intuitive as sitting - a primal task

[trebuchet03]

5/3 - So What the Hell Happened?
It's done! And We competed But,I'm getting ahead of myself...

So fairing putty was applied to the seam, to get it nice and smooth...


Then the frame and fairing were primed...


Here it is mounted together


How are they mated? Set screw collets (aluminum on the fairing side, steel on the frame side) with carbon strengthened rods. The Al collets were welded to small AL plates which were then laid up inside the fairing.


On the way to WI, I made dinner - Brats! Cooked in ecomodder fashion - economically and efficiently - using waste exhaust heat!


I stopped in a hotel on the way up to Madison... I love my bike


Oh, so what does it look like? You ask....
Tuft Testing...


Double hinged hatch - open for show or entry/exit position Butt goes in first, then legs swing in. It's a little tight, but I can do this movement no sweat


Yarr! Caution: Student Driver


Post Event... Now we don't need to worry about taco'ing a wheel, so here's some trike two wheel action! I got good at holding a line and doing circles on two wheels



More soon, I'm getting pictures from the whole event soon...

Oh... Not sure on final placement results... But we got Second in Design! Woo Hoo! Design report will be posted soon too