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  #1  
Old 05-26-2021, 11:17 AM
Steve Melton's Avatar
Steve Melton Steve Melton is offline
 
Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 3,425
Default Cargo pod for a 9?

thinking about a cargo pod for enough room to haul 2 Brompton E-bikes. loaded from the rear on a slide tray or maybe no slide tray.







*****

pod cross section, fully enclosed, carbon fiber, pod weight 60 lb

2 e-bikes = 70 lb

total added weight = 130 lb




********

fuel capacity of 121 gallons but don't even think about it. humm..... for a total of 157 gal at 6 gph that would be 26 hrs. fuel load shifting would be severe.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com

Last edited by Steve Melton : 05-27-2021 at 07:07 AM.
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  #2  
Old 05-26-2021, 01:35 PM
Patcullen550 Patcullen550 is offline
 
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Location: Dayton oh
Posts: 22
Default

Looks cool how will handle exhaust
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  #3  
Old 05-26-2021, 01:40 PM
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Steve Melton Steve Melton is offline
 
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Quote:
Originally Posted by Patcullen550 View Post
Looks cool how will handle exhaust
yeah, I noticed the exhaust is close.... and potential effects on engine cooling.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com

Last edited by Steve Melton : 05-26-2021 at 01:46 PM.
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  #4  
Old 05-26-2021, 01:50 PM
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jcarne jcarne is offline
 
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Looks like you could rename your plane to Low Wing Caravan.
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  #5  
Old 05-26-2021, 05:04 PM
xkape xkape is offline
 
Join Date: Apr 2019
Location: East PA
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Is there any way you could share that CAD model for the plane?
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  #6  
Old 05-26-2021, 06:01 PM
Desert Rat Desert Rat is offline
 
Join Date: Aug 2018
Location: Wichita KS
Posts: 668
Default

Whats your ground clearance?

We once rebuilt a Caravan that had hit hard enough on landing that it hit the pod on the runway. It shoved it upward and the result was a bunch of bent stuff in the belly.

There was a bunch of other stuff going on in that example, carrying some ice, may or may not have stalled and dropped in, maybe overloaded, you get the idea. I'm just saying that I'd want to be absolutely 100% sure that it wasn't going to hit the ground on that nice springy conventional gear...
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  #7  
Old 05-26-2021, 06:31 PM
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emsvitil emsvitil is offline
 
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Location: SoCal
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From a drag viewpoint, would it be better to have more rounding, and a long taper on the rear portion(even if rear portion is empty)............
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  #8  
Old 05-27-2021, 08:08 AM
Steve Melton's Avatar
Steve Melton Steve Melton is offline
 
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Location: Cincinnati, OH
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Default pod

this study is for a -9A. the graphics are from a 6.

perhaps I can shift the pod aft somewhat after I get the numbers. some simple testing to understand engine cooling blockage would be in order before doing much else or at least some simple CFD but I really don't believe CFD will be much benefit in an area with flows as complicated as this. I need to make some predictions on drag and impact to flight characteristics.

add a couple exterior steel patches to the exterior up front for mounting (2 redundant) and try to use the existing foot step patches at the aft attachments, total 6 attachment points.

the pod needs to have a large aft door hinged at the bottom to open a large area for loading the bikes that measure 25 x 25 x 11 inches. I need to get some better idea if some bike nesting is possible in order to determine if I can reduce the pod dimensions.

need to use full flap to minimize pitch angle upon landings but I think it will be OK but a close look at clearance is part of the plan.... and then of course, I need a test pilot.

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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com

Last edited by Steve Melton : 05-27-2021 at 08:27 AM.
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  #9  
Old 05-27-2021, 08:12 AM
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bkervaski bkervaski is offline
 
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You're going to need a bigger 3d printer
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  #10  
Old 05-27-2021, 08:15 AM
Steve Melton's Avatar
Steve Melton Steve Melton is offline
 
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Location: Cincinnati, OH
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Quote:
Originally Posted by bkervaski View Post
You're going to need a bigger 3d printer
wouldn't that be something. maybe one day. this one will be old school, foam mold, but the modeling will help for the studies.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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