Glider Crash - Minden?

We know how to recognize a thermaling glider from far off. But the glider
can disappear during two parts of the circle even when we know where to
look. And the jet jock probably does not know what to look for or to
understand the significance of what (s)he sees.

A thermalling glider has a moving blind spot that may be 15 seconds or more.
Not much-but how much distance can a bizjet cover in 15 seconds? Remember to
increase the TAS (and thus GS) by 2% per thousand feet over and above the
IAS.---The jet can go from a speck to very big in that distance.

--
Hartley Falbaum
DG800B "KF" USA


"Eric Greenwell" wrote in message
news:Zn6Jg.3900$nR2.1435@trnddc03...
kirk.stant wrote:
Hmm, the glider is thermalling - probably the easiest thing in the air
to see from another aircraft approaching.


A thermalling glider should be able to see approaching aircraft more
easily, too. Quite different from being run down by a faster aircraft
coming up behind. We probably shouldn't be too smug at this point, until
we know the facts for sure.

--
Change "netto" to "net" to email me directly

Eric Greenwell - Washington State, USA

www.motorglider.org - Download "A Guide to Self-launching Sailplane
Operation"

HL Falbaum wrote:
We know how to recognize a thermaling glider from far off. But the glider
can disappear during two parts of the circle even when we know where to
look. And the jet jock probably does not know what to look for or to
understand the significance of what (s)he sees.

A thermalling glider has a moving blind spot that may be 15 seconds or more.
Not much-but how much distance can a bizjet cover in 15 seconds? Remember to
increase the TAS (and thus GS) by 2% per thousand feet over and above the
IAS.---The jet can go from a speck to very big in that distance.

Yes, and even worse, the glider goes from a tiny speck to not very big
in the same distance. It's a tough situation for see-and-avoid.


--
Change "netto" to "net" to email me directly

Eric Greenwell - Washington State, USA

www.motorglider.org - Download "A Guide to Self-launching Sailplane
Operation"

And isn't this point the reason one might question the prudence of flying so
fast in such an area?
What are the responsibilities of the jet pilot? If the pilot must yeild to
the glider, isn't the jet pilot being irresponsible if she flies at a speed
that allows her no opportunity to yeild?

"Eric Greenwell" wrote in message
news:qDjJg.3232$XD1.570@trnddc01...
HL Falbaum wrote:
A thermalling glider has a moving blind spot that may be 15 seconds or
more.
Not much-but how much distance can a bizjet cover in 15 seconds?
Remember to
increase the TAS (and thus GS) by 2% per thousand feet over and above
the
IAS.---The jet can go from a speck to very big in that distance.

Yes, and even worse, the glider goes from a tiny speck to not very big
in the same distance. It's a tough situation for see-and-avoid.


--
Change "netto" to "net" to email me directly

Eric Greenwell - Washington State, USA

www.motorglider.org - Download "A Guide to Self-launching Sailplane
Operation"