Re: RP For Windtunnel/Aerodynamic

From: Nick Osborn (
Date: Mon Feb 22 1999 - 13:47:31 EET

Dear Deon

We have built a wide range of scaled parts in LOM for automotive / F1 / aerospace windtunnel applications over the last four years or so - such parts include inlet manifolds, turbocharger housings, suspension components / assemblies, gear box covers, etc.

Once impregnated under vacuum with an epoxy system we find the LOM process is particularly suitable for parts that go down to a feather edge, or parts where you need a high level of interior surface finish (due to the "cleavable" nature of the process) e.g. for a turbocharger housing with a complex internal volute, or for an inlet manifold.

Steps in this case would generally be as follows:

1. Build LOM model of entire part in one piece
2. "Cleave" model at appropriate Z height(s) to access key internal surfaces
3. De-block & resin impregnate under vacuum
4. Surface finish (from light spark through to polished finish) as required
5. Re-assemble cleaved sections to form final, internally finished part ready for aerodynamic testing

I hope this information is helpful.



Nick Osborn
Managing Director
140 - 144 Station Road, March,
Cambs. PE15 8NH, UK


Tel: +44 (0) 1354 650 789
Fax: +44 (0) 1354 650 799

>>> "Mnr. D de Beer" <ddebeer@ENG.TOFS.AC.ZA> 19/02/99 05:23:24 >>>
Dear RP list

I would like to get some info on success with RP for use in
windtunnels or aerodynamic evaluation.


Deon de Beer

 Deon de Beer
 Department of Mechanical Engineering
 Technikon Free State
 PBag X20539
 South Africa
 fax 27 51 507 3199

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