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Date: Wed, 10 Sep 2008 21:24:02 -0400
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Subject: Practicing Stalls
From: marknlisa@hometel.com
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=0AChat Daniel said, "How many times do you put your hand in a flame before=
 you know it burns you?  Do airline pilots practice stalling a 747?  Do Air=
 Force pilots practice stalling the Raptor?"=0A=0A =0A=0AThis is not a fair=
 comparison. Both the 747 and the F-22 Raptor have several systems installe=
d to help the pilot avoid a stall. The 747 has calibrated AOA measurement e=
quipment employing cockpit indicators using both visual and aural warnings.=
 If I'm not mistaken, it also incorporates a "stick shaker" to give the pil=
ot some tactile feedback. Many commercial aircraft even include a system to=
 push the stick forward independent of pilot control input to avoid a stall=
.=0A=0A =0A=0AI would imagine many of these same devices are used in the F-=
22 Raptor. If not, several tens of thousands of pounds of vectored thrust c=
an get you out of a lot of trouble...=0A=0A =0A=0ARegardless, both 747 and =
F-22 Raptor crews practice ALL emergency procedures -- including unusual at=
titude recovery -- in the simulator.=0A=0A =0A=0ASince we (most of us) have=
 neither the built-in warning equipment, nor a properly configured simulato=
r in which to practice, we must learn how to deal with these flight regimes=
 in our aircraft.=0A=0A =0A=0AI've read numerous posts here on the forum de=
scribing ways to modify the stall characteristics of an aircraft. If you be=
lieve you cannot recover your aircraft because its stall characteristics ar=
e too violent, perhaps it's time to hire a professional to conduct the requ=
isite flight testing and install the necessary devices to tame the beast --=
 so to speak. Reduce the risk and PRACTICE -- it'll save your life!=0A=0A =
=0A=0ARegards,=0A=0A =0A=0AMark
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<font face=3D"arial" size=3D"2"><DIV>Chat Daniel said, "<FONT face=3DArial =
size=3D2>How many times do you put your hand in a flame before you know it =
burns you?&nbsp; Do airline pilots practice stalling a 747?&nbsp; Do Air Fo=
rce pilots practice stalling the Raptor?"</FONT></DIV>=0A<DIV>&nbsp;</DIV>=
=0A<DIV>This is not a fair comparison. Both the 747 and the F-22 Raptor hav=
e several systems installed to help the pilot avoid a stall. The 747 has&nb=
sp;calibrated AOA measurement equipment employing cockpit indicators using =
both visual and aural warnings. If I'm not mistaken,&nbsp;it also incorpora=
tes a "stick shaker" to give the pilot some tactile feedback. Many commerci=
al aircraft even include a system to push the stick forward independent of =
pilot control input to avoid a stall.</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>I wo=
uld imagine many of these same devices are used in the F-22 Raptor. If not,=
 several tens of thousands of pounds of vectored thrust can get you out of =
a lot of trouble...</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>Regardless, both 747 a=
nd F-22 Raptor crews practice ALL emergency procedures -- including unusual=
 attitude recovery -- in the simulator.</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>Si=
nce we (most of us) have neither the built-in warning equipment, nor a prop=
erly configured simulator in which to practice, we must learn how to deal w=
ith these flight regimes in our aircraft.</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>=
I've read numerous posts here on the forum describing ways to modify the st=
all characteristics of&nbsp;an aircraft. If you believe you cannot recover =
your aircraft because its stall characteristics are too violent, perhaps it=
's time to hire a professional to conduct the requisite flight testing and =
install the necessary devices to tame the beast -- so to speak. Reduce the =
risk and PRACTICE -- it'll save your life!</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV=
>Regards,</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>Mark</DIV></font>
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