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What is a "Forward Skip"?



 
 
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  #1  
Old January 6th 05, 02:40 PM
Gary G
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Default What is a "Forward Skip"?

Hi folks - I'm somewhat new to flying.

I heard references to "forward slip" to get rid of altitude on approach.

Can someone give me the 2 sentence (or how ever many is adequate) to
what a forward slip procedure is?

Thanks!

Gary


  #2  
Old January 6th 05, 02:56 PM
569
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Slip into the wind. Add hard right rudder, turn the yoke hard left,
add some forwad pressure. This exposes more of the surface to the
wind, and you're able to loss more altitude, without a noticable gain
in airspeed. Some aircraft prhobit slips with flaps extended, others
make no mention.

  #3  
Old January 6th 05, 03:11 PM
G.R. Patterson III
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Gary G wrote:

Can someone give me the 2 sentence (or how ever many is adequate) to
what a forward slip procedure is?


When you drop one wing (let's say the right wing) by using the ailerons and use
rudder to turn the nose in the opposite direction (left, in this case), the
plane will fly sideways. That's a slip. If you fly the plane so that it
continues to fly the same course it was flying, that's a forward slip.

Here's a link to another explanation -
http://www.airliners.net/discussions...ead.main/48323

George Patterson
The desire for safety stands against every great and noble enterprise.
  #4  
Old January 6th 05, 03:44 PM
Edwin Johnson
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On 2005-01-06, 569 wrote:

wind, and you're able to loss more altitude, without a noticable gain
in airspeed. Some aircraft prhobit slips with flaps extended, others


Also note that some of the older aircraft and some of the present homebuilts
and experimentals had no flaps, so this was the main method of losing
altitude on landing approach if a steep glide path was needed, such as over
obstacles. A good reason this is needed and should be practiced today is in
the event the flaps become inoperative in the case of an engine out or other
emergency.

....Edwin
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~ Edwin Johnson ....... ~
~
http://www.shreve.net/~elj ~
~ ~
~ "Once you have flown, you will walk the ~
~ earth with your eyes turned skyward, ~
~ for there you have been, there you long ~
~ to return." -- da Vinci ~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  #5  
Old January 6th 05, 03:54 PM
Slip'er
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I heard references to "forward slip" to get rid of altitude on approach.

Both prior posts pretty much nailed it. A forward slip can be made either
to the left or right. Basically, you intentionally use cross controls
(rudder & aeleron). I believe that a forward slip generally refers to using
a slip to keep the aircraft aligned with the runway for landing in a
crosswind. This could mean landing on one wheel to maintain directional
orientation. This is my preferred approach when flying in a cross wind in a
taildragger.

A side slip is similar but in this scenario, the slip is can be more
aggressive. A side slip is used to shed altitude.

When practicing slips, be careful. Remember, you are intentionally using
cross-controls near the ground where inadvertant spin recovery could be
impossible.

I got my call sign "slip'er" because I thought that they were so fun I
always come in high and slip it in.


  #6  
Old January 6th 05, 04:04 PM
Peter R.
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569 ) wrote:

Some aircraft prhobit slips with flaps extended,


Which ones?

--
Peter





  #7  
Old January 6th 05, 04:51 PM
569
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The Cessna 172R has a placard, "Avoid Slips with Flaps Extended". Now
it says, "avoid". It does not say that you can't do it. There was a
discussion in Flight Training Mag about 6 months ago that talked about
that same thing. In the Cessna 152 I always have full flaps in a slip.
I don;t truely understand why having flaps is a problem in the 172R.

  #8  
Old January 6th 05, 04:58 PM
Bob Moore
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"Slip'er" wrote

I heard references to "forward slip" to get rid of altitude on
approach.


Both prior posts pretty much nailed it. A forward slip can be made
either to the left or right. Basically, you intentionally use cross
controls (rudder & aeleron). I believe that a forward slip generally
refers to using a slip to keep the aircraft aligned with the runway
for landing in a crosswind. This could mean landing on one wheel to
maintain directional orientation. This is my preferred approach when
flying in a cross wind in a taildragger.

A side slip is similar but in this scenario, the slip is can be more
aggressive. A side slip is used to shed altitude.


I do believe that you have them reversed..........

From http://www.airbum.com/articles/ArticleSlips.html

The old fashioned forward slip is one of those maneuvers that on one hand
would appear to be redundant to modern flap systems. At the same time,
it's one of those basic maneuvers that if understood and practiced gives
the pilot yet another tool enabling him to put the airplane exactly where
he wants it on approach.

Unless we're talking about the so-called side slip in which a slipping
motion to the side is canceled out by the crosswind so the airplane
tracks straight.

Bob Moore
ATP CFI

  #9  
Old January 6th 05, 05:00 PM
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Cessna 172M

"Avoid slips with full flap extension"



Peter R. wrote:
569 ) wrote:

Some aircraft prhobit slips with flaps extended,


Which ones?


--
Mike Flyin'8

PP-SEL
  #10  
Old January 6th 05, 05:05 PM
Jose
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Can someone give me the 2 sentence (or how ever many is adequate) to
what a forward slip procedure is?


Previous posters have given you good answers. I'll add that a "side
slip" is exactly the same thing as a forward slip. In both cases, (in
calm air) the aircraft is pointed in a different direction from the
way it's going. We say "side slip" when we are =thinking= about it
with respect to the direction we are pointed, and we say "forward
slip" when we are =thinking= about it with respect to the direction we
want to go. But the maneuver is identical, and the essential
character is that the plane goes sideways =through=the=air= to some
degree.

Note also this is different from "crabbing", which arises from flying
through air that is moving along the ground. The airplane does not
know what the ground is doing, and flies straight ahead through the
air. But if the air moves along the ground, it takes the plane with
it, and the combined motion can make it look like the airplane is
moving "sideways" to some degree. Nonetheless, unless the pilot is
doing something else at the same time, the airplane is going
=through=the=air= straight forwards.

Jose
--
Money: What you need when you run out of brains.
for Email, make the obvious change in the address.
 




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