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List: flightgear-devel
Subject: Re: [Flightgear-devel] Bug 772 (Yasim on ground)
From: Heiko Schulz <aeitsch_13 () yahoo ! de>
Date: 2013-07-20 14:46:52
Message-ID: 1374331612.61882.YahooMailNeo () web171503 ! mail ! ir2 ! yahoo ! com
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[Attachment #2 (multipart/alternative)]
Hello,
I have re-opened today this issue again, after I played with some better developed \
YASim aircrafts like MD 81 to find out what is the issue behind the bad crosswind \
behavior of my Dornier 328TP- project, and a lot of other aircraft. (couldn't test \
all of course....)
Especially I tested the MD81 by Gary Neely after I read his very good YASim \
tutorials.
Gary Neely MD81, gross weight 157503 lb
Location: Edwards base KEDW, RWY 15
Weather: 08025KT 12SM 20/08 Q1013 NOSIG
Takeoff behavior: as soon I reach >110-120ktn the aircraft will drift into the wind.
Landing behavior: I noticed that even this aircraft will drift away as soon the nose \
gear will touch down with wind speeds about more than 20ktn and wind from left \
Crosswind limitation for the real thing is 30ktn on dry runways. \
(http://www.hilmerby.com/md80/md_basic.html) No problems with wind from right, even \
with much higher wind speeds- and that's exactly what makes we wonder.
now the 777-200ER,
gross weight: 574595 lb
Location: Edwards base KEDW, RWY 15
Weather: 08025KT 12SM 20/08 Q1013 NOSIG
Takeoff behavior: Flaps 15: as soon I reach >110-120ktn the aircraft will drift into \
the wind as well. (Vr: 130ktn)
Flaps 5: as soon I reach >110-120ktn the aircraft will \
drift into the wind as well. (Vr: 130ktn) Landing behavior: I noticed that even \
this aircraft will drift away as soon the nose gear will touch down with wind speeds \
about more than 20ktn and wind from left as well Crosswind limitation for the real \
thing is about 40ktn on dry runways. \
(http://www.pprune.org/archive/index.php/t-285471.html)
So, I'm sure the problem isn't solved. No idea where the cause of this problem could \
be- I'm not sure if it is really the aircraft configuration...
Kind regards
HHS
[Attachment #5 (text/html)]
<html><body><div style="color:#000; background-color:#fff; font-family:times new \
roman, new york, times, serif;font-size:12pt"><div>Hello,<br></div><div style="color: \
rgb(0, 0, 0); font-size: 16px; font-family: "Times New Roman"; \
background-color: transparent; font-style: normal;"><br></div><div style="color: \
rgb(0, 0, 0); font-size: 16px; font-family: "Times New Roman"; \
background-color: transparent; font-style: normal;">I have re-opened today this issue \
again, after I played with some better developed YASim aircrafts like MD 81 to find \
out what is the issue behind the bad crosswind behavior of my Dornier 328TP- project, \
and a lot of other aircraft. (couldn't test all of course....)</div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;"><br></div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;">Especially I tested \
the MD81 by Gary Neely after I read his very good YASim tutorials. </div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;"><br></div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;"> Gary Neely MD81, \
gross weight 157503 lb </div><div style="color: rgb(0, 0, 0); font-size: 16px; \
font-family: "Times New Roman"; background-color: transparent; font-style: \
normal;">Location: Edwards base KEDW, RWY 15</div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;">Weather: 08025KT 12SM 20/08 Q1013 \
NOSIG</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times \
New Roman"; background-color: transparent; font-style: normal;"><br></div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;">Takeoff behavior: as \
soon I reach >110-120ktn the aircraft will drift into the wind.</div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;">Landing behavior: I \
noticed that even this aircraft will drift away as soon the nose gear will touch \
down with wind speeds about more than 20ktn and wind from left</div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;">Crosswind limitation \
for the real thing is 30ktn on dry runways. \
(http://www.hilmerby.com/md80/md_basic.html) </div><div style="color: rgb(0, 0, \
0); font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;">No problems with wind from right, even with much \
higher wind speeds- and that's exactly what makes we wonder.</div><div style="color: \
rgb(0, 0, 0); font-size: 16px; font-family: "Times New Roman"; \
background-color: transparent; font-style: normal;"><br></div><div style="color: \
rgb(0, 0, 0); font-size: 16px; font-family: "Times New Roman"; \
background-color: transparent; font-style: normal;">now the 777-200ER,
gross weight: 574595 lb
</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;"> <div style="color: \
rgb(0, 0, 0); font-size: 16px; font-family: "Times New Roman"; \
background-color: transparent; font-style: normal;">Location: Edwards base KEDW, RWY \
15</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times \
New Roman"; background-color: transparent; font-style: normal;">Weather: 08025KT \
12SM 20/08 Q1013 NOSIG</div><div style="color: rgb(0, 0, 0); font-size: 16px; \
font-family: "Times New Roman"; background-color: transparent; font-style: \
normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: \
"Times New Roman"; background-color: transparent; font-style: \
normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: \
"Times New Roman"; background-color: transparent; font-style: \
normal;"> Takeoff behavior: Flaps 15: as soon I reach >110-120ktn the \
aircraft will drift into the wind as well. (Vr: 130ktn) </div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;"> \
\
Flaps 5: as soon I reach >110-120ktn the aircraft will drift into the wind as \
well. (Vr: 130ktn) </div><div style="color: rgb(0, 0, 0); font-size: 16px; \
font-family: "Times New Roman"; background-color: transparent; font-style: \
normal;">Landing behavior: I noticed that even this aircraft will drift away as \
soon the nose gear will touch down with wind speeds about more than 20ktn and wind \
from left as well </div><div style="color: rgb(0, 0, 0); font-size: 16px; \
font-family: "Times New Roman"; background-color: transparent; font-style: \
normal;"> Crosswind limitation for the real thing is about 40ktn on dry runways. \
(http://www.pprune.org/archive/index.php/t-285471.html) </div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;"><br></div><div \
style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New \
Roman"; background-color: transparent; font-style: normal;">So, I'm sure the \
problem isn't solved. No idea where the cause of this problem could be- I'm not sure \
if it is really the aircraft configuration...</div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;">Kind regards</div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;">HHS</div></div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); \
font-size: 16px; font-family: "Times New Roman"; background-color: \
transparent; font-style: normal;"><br></div></div></body></html>
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