Re: Something like landing gear testing


Ron <rondefly@...>
 

I noticed some of the formula 1 aircraft at the reno air races also had just
a skid, of course, they don't taxi them to the takeoff position either. It
is just used for the short takeoff and landing.



Ron T



Ron's Quickie's

Q200 N4710P
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Q1 http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page9.html

Q-200 09/2005
http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page10.html



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From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of
Tri-Q1
Sent: Thursday, September 22, 2005 4:08 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: Something like landing gear testing



Space ship 1 has a skid.

Ryan
--- In Q-LIST@..., "David Gall" <David@G...> wrote:
I was amazed that the strut did not snap off.

Regards,
Damian Gregory N8427 Q200
Damian,

Amazed, why? You might think that the load from a skidding tire
would be more than that of a rolling tire, but with good anti-lock
brakes the coefficient of friction of a rolling, braked tire is
greater than the skidding friction. Why else would you see so much TV
hype about anti-lock brakes on cars? Well, that same coefficient of
friction can be generated in a crosswise direction by a steered,
rolling tire without brakes. That's the situation for a nose gear,
except that the load is lateral instead of longitudinal. So, the nose
gear should be as strong laterally as a main gear is longitudinally,
right? And since most nose gear components are round, they should be
just as trong longitudinally as laterally, right? More so, since
they're braced in the longitudinal direction by all the retraction
links.... And finally, the coefficient of sliding friction of metal
against pavement is less than that of rubber against pavement. So,
there should be nothing "amazing" about the event. Damn good flying,
just using a nose skid instead of a nose wheel. Oh, yeah, nice sparks
and smoke, but a non-event. (Fire extinguishers at the ready for the
aluminum/magnesium fire excepted!) Have a nice NDT day. :-)

David J. Gall


P.S. Kevin thanx for the cool link!



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