Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

forward slip

Wikiposts
Search
Tech Log The very best in practical technical discussion on the web

forward slip

Thread Tools
 
Search this Thread
 
Old 25th Jun 2010, 17:24
  #1 (permalink)  
Thread Starter
 
Join Date: Jun 2010
Location: 39000 feet
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
forward slip

Hi, done some research and have not found an answer suitable. I am aware that the term forward slip means to operate the rudder and ailerons in different directions to overcome crosswinds, how does this help to overcome the crosswinds, this is something I have never tried in my career, any help?
leftwing is offline  
Old 25th Jun 2010, 17:28
  #2 (permalink)  
 
Join Date: Oct 2005
Location: uk
Posts: 919
Likes: 0
Received 0 Likes on 0 Posts
What is your career? (would be interesting to compare IP address with bumpyflight)
mcgoo is offline  
Old 25th Jun 2010, 17:29
  #3 (permalink)  
Thread Starter
 
Join Date: Jun 2010
Location: 39000 feet
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
I used to be a dash 8 pilot before retiring last year, bumpy?
leftwing is offline  
Old 25th Jun 2010, 18:16
  #4 (permalink)  
 
Join Date: Oct 2006
Location: Ankh Morpork, DW
Posts: 652
Likes: 0
Received 0 Likes on 0 Posts
Dash Ocho? So was Bumpy! And A321, of course. But not the deep and dark realm of the A320. . .

If you're not Bumpy, then welcome to the party. I hope you find your answer.

If you are Bumpy, we missed you so.
ImbracableCrunk is offline  
Old 25th Jun 2010, 18:17
  #5 (permalink)  
 
Join Date: Jan 2008
Location: London
Age: 46
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
Your a retired Dash 8 pilot, and your asking this question?
NOLAND3 is offline  
Old 25th Jun 2010, 19:18
  #6 (permalink)  
 
Join Date: Dec 2006
Location: The No Transgression Zone
Posts: 2,483
Received 5 Likes on 3 Posts
have a look at the airplane flying handbook

the Dash-8 can't make FL 390

Pugilistic Animus is offline  
Old 25th Jun 2010, 19:27
  #7 (permalink)  
 
Join Date: Jun 2009
Location: VA, USA
Age: 58
Posts: 578
Received 0 Likes on 0 Posts
Why does bumpy insist on using lower-case for the dash 8...?

-GY

P.S. Amusingly the service ceiling for the A321 is... 39K

Last edited by GarageYears; 25th Jun 2010 at 19:30. Reason: Strange coincidence....
GarageYears is offline  
Old 25th Jun 2010, 19:42
  #8 (permalink)  
BarbiesBoyfriend
Guest
 
Posts: n/a
I thought a fwd slip was for losing height quickly.

Crossing controls in a x-wind is a different thing.

Last edited by BarbiesBoyfriend; 25th Jun 2010 at 20:14.
 
Old 25th Jun 2010, 19:52
  #9 (permalink)  
 
Join Date: Sep 2007
Location: Mediterranean
Posts: 146
Received 0 Likes on 0 Posts
aligning non-alignments

crossing controls results in non-alignment of heading and tracking

cross wind results in non-alignment of heading and tracking

crossing controls (adequately) in a cross wind landing results in alignment of heading and tracking

that is how it helps
janrein is offline  
Old 25th Jun 2010, 19:57
  #10 (permalink)  
Thread Starter
 
Join Date: Jun 2010
Location: 39000 feet
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
thanks for the information janrein
leftwing is offline  
Old 25th Jun 2010, 20:03
  #11 (permalink)  
 
Join Date: Jan 2007
Location: Weston Super Mare/UAE
Age: 60
Posts: 406
Received 0 Likes on 0 Posts
Barbies boyfriend, maybe it was to 'lose' some height?! Not loose it!

BTW, have we flown together - spent many years in BRS on the junglejet!
captainsmiffy is offline  
Old 25th Jun 2010, 20:17
  #12 (permalink)  
BarbiesBoyfriend
Guest
 
Posts: n/a
Thanks you great ginger lump! I already edited it before I saw yer post.

You should try a big sideslip in the crash-8, I think it would do it nicely as it has a big 'ol rudder. Not such a good plan on the Barbie.

You doin' ok now you're a big ol' captain?

Edit: Oops CaptainSmiffy. Have I misidentified you? Just noted your unicycle comment in your profile so, if that was you with the card tricks, then I remember you!

I was your FO I think, not the other way 'round.
 
Old 25th Jun 2010, 20:23
  #13 (permalink)  
Gender Faculty Specialist
 
Join Date: Mar 2002
Location: Stop being so stupid, it's Sean's turn
Posts: 1,882
Received 5 Likes on 4 Posts
Lefty/Bumpy,

How did you used to land in a crosswind on the Dash then?
Chesty Morgan is offline  
Old 25th Jun 2010, 21:42
  #14 (permalink)  
Nemo Me Impune Lacessit
 
Join Date: Jun 2004
Location: Derbyshire, England.
Posts: 4,091
Received 0 Likes on 0 Posts
I always thought that a forward slip fielded around the fourth slip position?

I'm confused now, where does a side slip field?
parabellum is offline  
Old 26th Jun 2010, 02:18
  #15 (permalink)  
Moderator
 
Join Date: Apr 2001
Location: various places .....
Posts: 7,183
Received 93 Likes on 62 Posts
One can deliberately cause an aircraft to sideslip by flying crossed controls.

Sometimes one uses such sideslip while endeavouring to maintain a track, eg, during late final to lose an extra bit of height. For this specific use of sideslip, the Americans refer to "forward slip" while everyone else just calls it sideslip.

Done to death in earlier threads if you like to run a search.
john_tullamarine is offline  
Old 26th Jun 2010, 06:08
  #16 (permalink)  
 
Join Date: Jan 2010
Location: india
Age: 59
Posts: 68
Likes: 0
Received 0 Likes on 0 Posts
If forward slip is side-slip then let me attempt to answer ur Q.

Assuming winds from the left on approach' the nose is cocked to the left to track in.

At flare you give right rudder to straighten. The rudder produces force to the left on the tail.
This force besides acting about the vertical (normal) axis also gives translational force to the left. this translational move counteracts the wind from the left momentarily.

However the swing of the left wing may increase the lift on it & raise the left wing. And also if the float has been long the aircraft will start to drift to the right, so again you will require to dip your left wing

In the end you have applied right rudder & left dip.

hope have been of some help
stubby1 is offline  
Old 26th Jun 2010, 09:46
  #17 (permalink)  
 
Join Date: Dec 2006
Location: The No Transgression Zone
Posts: 2,483
Received 5 Likes on 3 Posts
Airplane Flying Handbook
Seriously, it's a good read if you wanna buy a copy it's only about $15 if that
Pugilistic Animus is offline  
Old 26th Jun 2010, 10:21
  #18 (permalink)  
 
Join Date: Jun 2009
Location: Australia
Posts: 49
Likes: 0
Received 0 Likes on 0 Posts
crossed controls

Trick question; when does crossed controls give a balanced turn?
Air Tourer is offline  
Old 26th Jun 2010, 11:10
  #19 (permalink)  
 
Join Date: Sep 2005
Location: europe
Posts: 359
Likes: 0
Received 0 Likes on 0 Posts
Smile

my god, I can not belive the level of EU pilots here .you should really go back to basic. who taught you to fly a plane?

balanced turn is when the ball is centered...if you Xcontrol you are not in a balanced turn.

next question for you: difference between forward slip and slip?

slip is when you X control but flight straight.

forward slip is when you X control with excess of bank(you skid when excess of rudder), and you drift aways from your track.(used usually to lose altitude)


what's the right technique to enter a forward slip?

first bank the plane over 30 degree
second; apply rudder in opposite direction

how to get out?:

release pressure on rudder
level off your wing


if you can not so this, I suggest you to go with a flight instructor, so he can show you how to do a f. slip.
A320rider is offline  
Old 26th Jun 2010, 14:04
  #20 (permalink)  
 
Join Date: Oct 2006
Location: Ankh Morpork, DW
Posts: 652
Likes: 0
Received 0 Likes on 0 Posts
And the troll takes more hostages. . .

ImbracableCrunk is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.