First solo cross-country flight completed - question

Kai Rode wrote in
:

On Sun, 09 Mar 2008 11:08:55 +0100, Kai Rode wrote:

What kind of aircraft?

An Aero AT-3 VLA. http://www.s2taviation.com/aero.htm

Winds 230@20 on runway 29 was a 17.5 crosswind
componant

Actually it's 15 kts crosswind component.



Actually it's a 17.320508075688772935274463415059 kt crosswind
component.


Call it 17.4 to be safe.



Bertie

Kai Rode wrote in news:4gj8t3hrke0qo0b8ans78qm3cj9bigielg@
4ax.com:

Winds 230@20 on runway 29 was a 17.5 crosswind
componant

Actually it's 15 kts crosswind component.

Actually it's a 17.320508075688772935274463415059 kt crosswind
component.

Actually you're right and 15 are for a 50° difference not 60°
difference...stupid diagrams, actually.


Actualy, 50 degrees would be 15.308882 knots.


Bertie

Winds 230@20 on runway 29 was a 17.5 crosswind
componant

Actually it's 15 kts crosswind component.

Actually it's a 17.320508075688772935274463415059 kt crosswind
component.

Actually you're right and 15 are for a 50° difference not 60°
difference...stupid diagrams, actually.

On Sun, 9 Mar 2008 20:27:50 +0000 (UTC), Bertie the Bunyip
wrote:

Kai Rode wrote in
:

On Sun, 09 Mar 2008 11:08:55 +0100, Kai Rode wrote:

What kind of aircraft?

An Aero AT-3 VLA. http://www.s2taviation.com/aero.htm

Winds 230@20 on runway 29 was a 17.5 crosswind
componant

Actually it's 15 kts crosswind component.



Actually it's a 17.320508075688772935274463415059 kt crosswind
component.


Call it 17.4 to be safe.

I did it with a whizwheel this morning. .2 is pretty darn close.

Peter Clark wrote in
:

On Sun, 9 Mar 2008 20:27:50 +0000 (UTC), Bertie the Bunyip
wrote:

Kai Rode wrote in
m:

On Sun, 09 Mar 2008 11:08:55 +0100, Kai Rode wrote:

What kind of aircraft?

An Aero AT-3 VLA. http://www.s2taviation.com/aero.htm

Winds 230@20 on runway 29 was a 17.5 crosswind
componant

Actually it's 15 kts crosswind component.



Actually it's a 17.320508075688772935274463415059 kt crosswind
component.


Call it 17.4 to be safe.

I did it with a whizwheel this morning. .2 is pretty darn close.

You were closer than that! .02 and change.

Rule of thumb is fine, really. 30 degrees' componenet is half, 45 is 3/4
60 and over should be counted as 100%.


Bertie

Actually you're right and 15 are for a 50° difference not 60°
difference...stupid diagrams, actually.
Actualy, 50 degrees would be 15.308882 knots.

Actually you should tell that to the people who drew the diagram in the
handbook and used too thick lines. But that would be arguing for arguments
sake, wouldn't it?

Kai Rode wrote in
:

Actually you're right and 15 are for a 50° difference not 60°
difference...stupid diagrams, actually.
Actualy, 50 degrees would be 15.308882 knots.

Actually you should tell that to the people who drew the diagram in
the handbook and used too thick lines. But that would be arguing for
arguments sake, wouldn't it?

Or you could learn what trig is. has hundreds of uses in aviation anyway.


And I never argue with a German if I'm drunk or tired.


Bertie

On Sun, 9 Mar 2008 20:27:50 +0000 (UTC), Bertie the Bunyip
wrote:

Kai Rode wrote in
:

On Sun, 09 Mar 2008 11:08:55 +0100, Kai Rode wrote:

What kind of aircraft?

An Aero AT-3 VLA. http://www.s2taviation.com/aero.htm

Winds 230@20 on runway 29 was a 17.5 crosswind
componant

Actually it's 15 kts crosswind component.



Actually it's a 17.320508075688772935274463415059 kt crosswind

Guess I'm going to have to retire the old "Versa Trig". I can only
get a fraction of those significant digits. But what can you expect
from bamboo.

component.


Call it 17.4 to be safe.



Bertie

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

Bertie the Bunyip wrote:
Call it 17.4 to be safe.

Well, now you're assuming runway 29 was actually 290, when it could be
anything from 290 to 294 and still be labeled "29".

Throws your sig figs out a bit.

TheSmokingGnu

Roger wrote in
:

On Sun, 9 Mar 2008 20:27:50 +0000 (UTC), Bertie the Bunyip
wrote:

Kai Rode wrote in
m:

On Sun, 09 Mar 2008 11:08:55 +0100, Kai Rode wrote:

What kind of aircraft?

An Aero AT-3 VLA. http://www.s2taviation.com/aero.htm

Winds 230@20 on runway 29 was a 17.5 crosswind
componant

Actually it's 15 kts crosswind component.



Actually it's a 17.320508075688772935274463415059 kt crosswind

Guess I'm going to have to retire the old "Versa Trig". I can only
get a fraction of those significant digits. But what can you expect
from bamboo.

Heh heh. I used the calculator on my laptop for that and it went on a
bit further, I think! Not very practical to use when you're sliding down
finals with a x-wind on the limit. With 60 degrees of the nose, i'd
count the entire windspeed as the componenet for several reasons, not
the least of which is the added drama when you're telling your buds in
the bar about it afterwards.


Bertie