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Gordon,
This is exactly how the problem space needs to be framed. The economic
solution to this problem is to rely on donations of high value
engineering skills to jump start the production of aircraft parts with
an eye to minimizing input labor costs.
I own a company here in South-east Michigan that makes filter parts for
oddball filtration systems. Since these parts are all custom, we paid a
local CAD firm to do the designs, then passed those off to a machine
shop that does work for GM. Its amazing how cheaply you can make parts
if you do the up-front engineering on them first. IT also helps that we
have underutilized quality machine shop capacity here surronding the
auto companies.
Should someone in the EAA, familliar with engines, whish to design a new
engine (like the Jibaru) from scratch. This would be a good place to do
it. I say from scratch because the Lycoming/Contenental combo aren't
what I'd call engineered for efficient manufacturing. Perhaps
something like a cross between the Rotax & the Jibaru would work.
As for the airframe parts, unless someone comes up with a process to
dramatically reduce the labor in making a fiberglass fuse, I do not think
we will be seing cheap airframe parts any time soon. On the other hand,
if you do not mind assembling yourself, the aluminum option could work
with CNCd parts.
No, until someone comes up with a way to pull a fully primed and painted
fiberglass part from a mold (no trimming/sanding required), we aren't
going to see cheap airframe parts, however, maybe that's not as critical
as it would seem. Looking at my numbers, a well engineered airframe for
20K still might not break the bank if you could get its assembly/surfas
prep/painting labor costs way down. You'd literally have to engineer the
entire process. So lets see...
Time Process descrip cost at $45/hr
20 Airframe assembly $900
5 powerplant install $225
10 airframe surface prep $450
10 airframe painting $450
5 instruments $225
5 interior $225
5 testing $225
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60 $2700
Now that's getting the price of the airplane down! Combine that with an
engine for ~10K or even a little less & you have something:
Airframe + instruments + basic engine + labor = theoretical base
price
20000 + 4000 + 9000 + ( 60 * 45 ) = 35700
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Re: These are not YOUR airplanes - Was: High Cost of Sportplanes
