Newsgroup: it.sport.formula1
Titolo: This Saturday will be 1 of May of 1994, pardon, of 1999...

This Saturday will be 1 of May of 1994, pardon, of 1999…
Rest in Peace Ratzenberger and Senna.
Stay in Hell FIA White Sharks (you can find them at 
http://www.fia.com
).
Hi again,
1. “Those who cannot remember the past are condemned to repeat it.”
George Santayana, philosopher, in his book ‘Life of Reason’.
2. “Those who remember it will find new ways to screw up.”
Charles Wolfe, economist.
3. "Whenever you look at a piece of work and you think the
fellow was crazy, then you want to pay some attention to that.
One of you is likely to be, and you had better find out which.
It makes an awful lot of difference."
Charles F. Kettering.
4. Saturday will be 1 of May of 1994, pardon, of 1999, the Worker’s Red Day
full of Senna’s Blood.
5. Ayrton Senna da Silva died on 1 of May of 1994.
6. Vinitial_braking_Senna=300Km/h, Gbraking_Senna=-3.75g so
delta_x_braking_Senna=(300/3.6)^2 / (2*3.75*9.81)= 94 m and Senna escape was 5
(FIVE) meters long. Deus o tenha!
7. Rest in Peace Senna. Stay in Hell Shoal of White Sharks, pardon,
(Brilliant) FIA Engineers.
8. Roland Ratzenberger died on the day before, that is, 30 of April of 1994.
9. Vcrash_Ratzenberger=325Km/h, Chassis_deformation_Ratzenberger=1.37m so
Gcrash_Ratzenberger(g’s)= -(325/3.6)^2/(2*1.37*9.81)=-303g. Deus o tenha!
10. Rest in Peace Ratzenberg. Stay in Hell Shoal of White Sharks, pardon,
(Brilliant) FIA  Engineers.
11. Note that "Race car driver David Purley survived a deceleration from 108
mph to zero in a crash at Silverstone, near Towcester, England in 1977 that
involved a force of 179.8 Gs, 29 fractures 3 dislocations and six heart
stoppages."
- Source  Guinnness book of Records, 1997.
12. This means a chassis_Deformation=(108*1.6/3.6)^2/(2*180*9.81)=0.65m=65cm
for Vcrash=108*1.6=173Km/h, that is a very RIGID chassis, like Ratzenberger
chassis.
13.  And 303g/180g=1.68 and 1994-1977=17 years.
14.  Rest in Peace Ratzenberger and Senna. Stay in Hell FIA White Sharks.
15.  What about increasing the length of the nose of F1 cars? This would mean
a greater chassis deformation in a crash, that is, a lower average crash
deceleration for the same crash speed.
16.  Assuming a maximum crash speed of Vcrash_max=325 Km/h=325/3.6 m/s and an
average crash deceleration of Gcrash=-75g we would need to increase the nose
length to  nose_length=(325/3.6)^2/(2*75*9.81)=6 meters!!
17. What about reintroducing ABS braking systems? This would mean a lower
crash speed, that is, a much lower average crash deceleration, that is, a
much lower risk of pilot injury given by risk_injury=-Gcrash / (100 g). Note
that a Gcrash=-75g means a risk_injury=0.75!!
18. Actual F1 cars have a nose length of about 85cm. Assuming again
Gcrash_nose=-75g this means a maximum crash speed of Vcrash_max=sqrt
(0.85*2*75*9.81)=35 m/s=127 Km/h.
19. If Vcrash >127Km/h then we will have a very high   Gcrash_after_nose ~ -
450g, that is, if Vcrash >> 127Km/h then the F1 pilot will surely die!...and
Vcrash_Senna~200Km/h >> 127Km/h and Vcrash_Ratzenberger=325Km/h >> 127Km/h.
20.  And what’s Vcrash_max_Di for a production car similar to Lady Di’s
Mercedes?
21.  Assuming Gcrash=-40g, chassis_deformation=2.5m we have 
Vcrash_max_Di=sqrt (2.5*2*40*9.81)=44 m/s=160 Km/h.
22.  Tomorrow, the Mother’s Day, will happen Imola 99 GP. If a car crashes
frontally into a wall with Vcrash >> 127Km/h its pilot will die...again...and
FIA will say, again, that it is Inocent and will put the car constructor on
trial...again, repeating the past, repeating Imola 94. And again we all say
that it was very bad luck, the car constructor is guilty, repeating the past,
repeating Imola 94. And what FIA will say to the assassinated pilot’s mother?
Again the same discurse it said to Senna’s and Ratzenberger’s mothers,
repeating the past, repeating Imola 94. Again and again repeating the past,
repeating Imola 94.
23. Tomorrow will happen the Imola 99 GP and Senna’s escape is still 5 (FIVE)
meters long, isn’t it?
24. And the braking deceleration now, with the new tires, is much worse,
Gbraking_F1=-2.5g, isn't it? Isn't it, FIA White Sharks?
And this means a greater braking distance and a greater crash speed, doesn’t
it? Doesn’t it, FIA White Sharks? You are repeating the past AND finding new
ways to screw up, aren’t you, FIA White Sharks?
25. You changed the rules, but you ‘forgot’ to change Senna’s and
Ratzenberger’s escapes, didn’t you, FIA White Sharks?
26. You changed the rules, but you ‘forgot’ that your changes would imply a
much lower braking deceleration, didn’t you, FIA White Sharks?
27.  So FIA engineers ARE a Shoal of White Sharks, as we wanted to show!
28. Note that a longer nose means a better aerodynamic performance, that is, a
lower Cx, that is a little bit greater top speed for the same engine power,
once the top speed is given by
Vmax=( 2 P / ( (1-p_mec)*rho*Cx*Sx ) )^1/3                (1)
where Vmax is the top speed in m/s, P is the engine power in watt
(1HP=746watt and 1CV=735watt), p_mec is the percentage of mechanical power
losses (0 < p_mec < 1, a typical value for F1 is 0.16), rho is the air
density in Kg/m^3 (a typical value is 1.2 Kg/m^3), a typical value of F1 Cx
is 0.75 for very fast circuits and 1.16 for very slow circuits and Sx is the
frontal area in m^2 (a typical value of F1 Sx is 1.5m^2).
29. If the new Cx is Cx_new= ½ Cx_old then the new top speed would be
Vmax_new=2^1/3 Vmax_old=1.26*Vmax_old, that is, we would have a 26% increase
on top speed.
Wow! Nuff Said!
The White Sharks Hunter.
“In at least one area of your life, be intense.”
David Campbell in his very interesting book ‘If you Don’t Know Where you’re
Going you’ll Probably End Up Somewhere Else’. You can find this book at
http://www.amazon.com
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Ehi ragazzi,
non leggo per due settimane (sono stata in Francia, ma so che non ve ne
frega niente) e quando torno vi trovo piů incasinati di prima...
Mamma mia, a volte mi sembra di stare fra gli hooligans...
sempre cosě? o forse peggio!
Comunque salutoni a tutti, anche dalla Francia
Desy