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Date: Wed, 29 May 2013 12:29:35 -0400
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From: cwfmd@yahoo.com
Subject: RE: Lancair Aerobatics
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Does anyone expect my mention of=A0'How about watching your AOAs! to avoid =
stall-departures (and subsequent) spins. ??
Good Point Terrence, I accidentally left that out, focusing on the SD inste=
ad...
=A0I don't like to fly a Lancair unless it has AOA installed. But I'm an ol=
d Navy test Pilot. Good comments both about AOA awareness(orientation?) and=
 control authority. I suspect the IV-P reduced control authority, to paraph=
rase Bert, in the tail, "there is not enough" surface.
=A0 We have an integrated systems project in our university course, specula=
ting on how we could "fix" the IV-P. Suppose you had a fly by wire control =
interface. Could the mishap scenarios be over come by limiting certain cont=
rol inputs? For example commanding too much angle of attack might limit bac=
k stick range or even add power and optimal climb if low altitude?
=A0What if instant antispin control override kicks in, like the stick pushe=
r in the F-104 or the Eclipse? What might the tradeoff be in aerodynamic im=
provements vs fly by wire? The problem is flight testing, because the fleet=
 is not large enough to support this development and testing.
=A0 We used to attack the identified problem, such as the F-14 flat spin(se=
e TopGun movie) or the SD issue in the F-16 "lawn dart" , as follows:
1. Identify the problem,=20
2. educate the pilots,=20
3. modify the training (I bagged lots of T-2 flt time, as a SPin/OutaContro=
l flt instructor),=20
4. modify the software or display/control etc,=A0=A0 but only lastly ,
5.modify the hardware changing the airframe.
=A0These are, in sequence of expenses, which increase(exponentially), with =
each level.=A0 With the Lancair, we are always in the first 2 or 3 levels, =
because of funding, it is hard to reach farther.=A0 The greatest challenge =
is to reach those new Lancair enthusiasts, who have not yet been introduced=
 to 1, 2 , & 3=A0 !

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<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D"=
top" style=3D"font: inherit;">Does anyone expect my mention of<div>&nbsp;'H=
ow about watching your AOAs! to avoid stall-departures (and subsequent) spi=
ns. ??</div><div><br></div>Good Point Terrence, I accidentally left that ou=
t, focusing on the SD instead...<br>&nbsp;I don't like to fly a <span>Lanca=
ir</span> unless it has AOA installed. But I'm an old Navy test Pilot. Good=
 comments both about AOA awareness(orientation?) and control authority. I s=
uspect the IV-P reduced control authority, to paraphrase Bert, in the tail,=
 "there is not enough" surface.<br>&nbsp; We have an integrated systems pro=
ject in our university course, speculating on how we could "fix" the IV-P. =
Suppose you had a fly by wire control interface. Could the mishap scenarios=
 be over come by limiting certain control inputs? For example commanding to=
o much angle of attack might limit back stick range or even add power and
 optimal climb if low altitude?<br>&nbsp;What if instant antispin control o=
verride kicks in, like the stick pusher in the F-104 or the Eclipse? What m=
ight the tradeoff be in aerodynamic improvements vs fly by wire? The proble=
m is flight testing, because the fleet is not large enough to support this =
development and testing.<br>&nbsp; We used to attack the identified problem=
, such as the F-14 flat spin(see TopGun movie) or the SD issue in the F-16 =
"lawn dart" , as follows:<br>1. Identify the problem, <br>2. educate the pi=
lots, <br>3. modify the training (I bagged lots of T-2 flt time, as a SPin/=
OutaControl flt instructor), <br>4. modify the software or display/control =
etc,&nbsp;&nbsp; but only lastly ,<br>5.modify the hardware changing the ai=
rframe.<br>&nbsp;These are, in sequence of expenses, which increase(exponen=
tially), with each level.&nbsp; With the Lancair, we are always in the firs=
t 2 or 3 levels, because of funding, it is hard to reach
 farther.&nbsp; The greatest challenge is to reach those new Lancair enthus=
iasts, who have not yet been introduced to 1, 2 , &amp; 3&nbsp; !<br></td><=
/tr></table>
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