[DeTomaso] NPC air speed. indicators

[Charles McCall]

What's harder to explain, fron an engineering point of view, is why
piston-engine aircraft (which don't cost nearly what an Airbus costs, but
aren't exactly cheap) continue to use 40 year old technology. 

(stepping waaaay out of my area of expertise, so please correct me where I'm
wrong). I understand that modern, brand-spanking new piston engined aircraft
continue to use points, for example, as electronic ignition has not been
certified for use. 

There are numerous examples of totally obsolete technology. The reason is
basically that the cost of certifying an MSD 6-AL for your Beechcraft is
prohibitively expensive. You need a zillion hours of bench time, flight
time, and who knows what other kind of time in order to have it certified by
the FAA. The volume simply isn't enough to justify the enormous expense to
have it certified. If it isn't certified, you can't install it. So planes
continue to be designed and manufactured using nothing but the best from the
1960's. 

Charles McCall
1985 DeTomaso Pantera GT5-S #9375
"Raising Pantera Awareness Across Europe"
http://www.poca.com/index.php/gallery/?g2_itemId=2323

-----Mensaje original-----
De: michaelsavga at gmail.com [mailto:michaelsavga at gmail.com] 
Enviado el: martes, 09 de junio de 2009 14:47
Para: Charles McCall
CC: detomaso at realbig.com
Asunto: Re: [DeTomaso] NPC air speed. indicators

Makes sense.   Thanks.   Michael shortt
------Original Message------
From: Charles McCall
To: michaelsavga at gmail.com
Cc: detomaso at realbig.com
Sent: Jun 9, 2009 8:42 AM
Subject: Re: [DeTomaso] NPC air speed. indicators

i'm not a pilot but I think I know the asnwer... a gps gives you
groundspeed. a plane isn't kept aloft by the ground - its airflow. In
a 100 mph headwind a small plane could have groundspeed of zero and
stay aloft.

what's important is the airflow around the wings/plane, not how much
ground you are covering.

Or so it seems to me..

On 6/9/09, michaelsavga at gmail.com <michaelsavga at gmail.com> wrote:
> Can the engineers or pilots on the list tell me why a 300 million jet like
> the Airbus uses a pieto tube to measure air speed instead of a GPS?  Seems
> like obsolete technology when a $125 unit from WalMart can do a better job
> and isn't subject to icing over.     Michael in Savannah
> Sent from my BlackBerryR wireless handheld
>
> -----Original Message-----
> From: michaelsavga at gmail.com
>
> Date: Tue, 9 Jun 2009 11:18:19
> To: Charles Engles<cengles at cox.net>; <detomaso-bounces at realbig.com>;
> <detomaso at realbig.com>
> Subject: Re: [DeTomaso] Dumb question: old helmets
>
>
> Garage decor.
> ------Original Message------
> From: Charles Engles
> Sender: detomaso-bounces at realbig.com
> To: detomaso at realbig.com
> Sent: Jun 8, 2009 10:50 PM
> Subject: [DeTomaso] Dumb question: old helmets
>
> Dear Forum,
>
>
>                 Really dumb question:  what is the best thing to do with
old
> out of date racing helmets?
>              I have accumulated three over two decades of track
shenanigans.
>   I hate to throw them out.    I shouldn't give them to my nephews
because,
> well, the helmets would probably be used for very creative and
unauthorized
> purposes.
>             Any ideas?
>
>
>                             Warmest regards,  Chuck Engles
>
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Sent from my BlackBerryR wireless handheld