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Date: Tue, 26 Jan 2010 11:10:27 -0500
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From: Chris Zavatson <chris_zavatson@yahoo.com>
Subject: Re: [LML] Re: Airspeed sensing switch /Auto gear extension / Engine out gear down Issue!
In-Reply-To: <list-4095944@logan.com>
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"Gear and flaps down too early with a dead engine will have disasterous con=
sequences every time."=0A=0A"That is a deadly mistake. Dragging gear and fl=
aps, you need a steep nose down attitude to keep the airspeed at a safe spe=
ed. Unfortunately, in that regime you can not flair the airplane. When you =
try to flair without a little power these airplanes just slow down and hit =
the ground."=0A=0A"When you try to flair without a little power these airpl=
anes just slow down and hit the ground. The situation is much worse if you =
are heavy. "=0A=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0AFull flaps, gear down=
 and no power should lead to a greaser every time.=A0 Our Lancairs have a b=
road range of drag and thus require a=A0good understanding of energy manage=
ment.=0AAt issue here is how=A0one defines 'safe speed'.=A0 =0AAs the appro=
ach angle steepens due to higher drag, so does the required speed (or energ=
y) to round out and flair.=A0 That higher energy is used to stop the descen=
t and bring the vertical speed to zero.=A0=A0=A0One can even calculate the =
speed required as a function of descent angle to bring the plane to level f=
light in the flare at the same final speed.=A0 In general, I prefer power o=
ff, steep approaches.=A0=A0That way if=A0the engine hick-ups, it is no big =
deal.=A0 When heavy, it takes a few more knots for the same maneuver, but y=
ou can still grease=A0the landing.=A0 It is all about energy management.=A0=
 One cannot stick to a fixed number on the airspeed indicator.=A0 Doing so =
could have you coming up short of energy.=A0 The broad range of drag availa=
ble to us on these planes is truly an asset.=0A=0AChris Zavatson=0AN91CZ=0A=
360std=0Awww.N91CZ.com=0A=0A=0A=0A      
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<html><head><style type=3D"text/css"><!-- DIV {margin:0px;} --></style></he=
ad><body><div style=3D"font-family:arial, helvetica, sans-serif;font-size:1=
0pt"><DIV>"Gear and flaps down too early with a dead engine will have disas=
terous consequences every time."<BR></DIV>=0A<DIV>"That is a deadly mistake=
. Dragging gear and flaps, you need a steep nose down attitude to keep the =
airspeed at a safe speed. Unfortunately, in that regime you can not flair t=
he airplane. When you try to flair without a little power these airplanes j=
ust slow down and hit the ground."</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>"When y=
ou try to flair without a little power these airplanes just slow down and h=
it the ground. The situation is much worse if you are heavy. "</DIV>=0A<DIV=
>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</DIV>=0A<DIV>Full flaps, gear down =
and no power should lead to a greaser every time.&nbsp; Our Lancairs have a=
 broad range of drag and thus require a&nbsp;good understanding of energy m=
anagement.</DIV>=0A<DIV>At issue here is how&nbsp;one defines 'safe speed'.=
&nbsp; </DIV>=0A<DIV>As the approach angle steepens due to higher drag, so =
does the required speed (or energy) to round out and flair.&nbsp; That high=
er energy is used to stop the descent and bring the vertical speed to zero.=
&nbsp;&nbsp;&nbsp;One can even calculate the speed required as a function o=
f descent angle to bring the plane to level flight in the flare at the same=
 final speed.&nbsp; In general, I prefer power off, steep approaches.&nbsp;=
&nbsp;That way if&nbsp;the engine hick-ups, it is no big deal.&nbsp; When h=
eavy, it takes a few more knots for the same maneuver, but you can still gr=
ease&nbsp;the landing.&nbsp; It is all about energy management.&nbsp; One c=
annot stick to a fixed number on the airspeed indicator.&nbsp; Doing so cou=
ld have you coming up short of energy.&nbsp; The broad range of drag availa=
ble to us on these planes is truly an asset.</DIV>=0A<DIV>&nbsp;</DIV>=0A<D=
IV>Chris Zavatson</DIV>=0A<DIV>N91CZ</DIV>=0A<DIV>360std</DIV>=0A<DIV><A hr=
ef=3D"http://www.n91cz.com/">www.N91CZ.com</A><BR></DIV><!-- cg6.c1.mail.mu=
d.yahoo.com compressed/chunked Sun Jan 24 06:19:19 PST 2010 --></div><br>=
=0A=0A      </body></html>
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