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minitour

Well-known member
Joined
Apr 17, 2004
Posts
3,249
m'kay, so...the -II approaches are fine...the CFI maneuvers are fine...I feel like my knowledge base is okay (not great...but I realize I'm going to learn more in the first 100 hours of instructing than I did in my first 100 hours of learning) as far as aerodynamics goes (haven't found a good explanation for ground effect)...regs are fine...but these damm landings...what gives?

I can squeek it on from the left side but I feel like the nose is always lined up left of center when I'm on the left side but when we land, it's pretty obvious that its right of center (lil' side-loading goin on).

It's not that the landings are "un safe" just not....not what I'd expect from a CFI applicant (even if it is a -II as the initial, I still expect more from myself...if I've got to teach that instrument student how to land, I should be able to).

Anyone got tips on how to get used to the sight picture? What did y'all do?

I think (now that I think about it) I might be looking across the nose (over the center of the cowling) instead of straight ahead like I do from the other seat...maybe that's it...I dunno

Any advice is appreciated...I'd like to finish this up by Wednesday if I can.

-mini
 
Hey mini, as far as the landing is concerned, just before take off, notice how the picture looks from the right side, should look the same when you are landing. Don't let it get you frustrated though, you will get better with time, and eventually you will forget how to land from the left side. ;)

I'll give it a try with ground effect.
After the airflow goes over the wing, it goes downward, creating a downwash. This airflow is always creating a lift vector, which is known as induced drag when not going forward (If the vector is going up is keeping the plane from going forward, if the vector is going back is keeping the plane form going forward).

When the airplane gets close to the ground, the downwash is interrupted, eliminating the lift vector that goes back, therefore eliminating some induced drag.

Hope that helps.
 
Last edited:
Flechas said:
I'll give it a try with ground effect.
After the airflow goes over the wing, it goes downward, creating a downwash. This airflow is always creating a lift vector, which is known as induced drag when not going forward (If the vector is going up is keeping the plane from going forward, if the vector is going back is keeping the plane form going forward).

When the airplane gets close to the ground, the downwash is interrupting, eliminating the lift vector that goes back, therefore eliminating some induced drag.

Hope that helps.

Thanks for the tip on the landings...I'll take a look when I takeoff next time.

For Ground effect...I thought lift acted perpendicular to the chord line of the wing? If it acts perpendicular(sp) to the airflow, that makes a lot of sense....kind of...I understand the vector resolution stuff, and I'm sure that's how you get the aft acting lift "vector" there, but I don't get how the air itself does the lifting...

-mini

(Thanks - That's the best start I've heard so far though :D)
 
Mini,
Airplane Flying Handbook, FAA-H-8083-3A (2004) page G-7

Ground Effect – A condition of improved performance encountered when an airplane is operating very close to the ground. When an airplane’s wing is under the influence of Ground Effect, there is a reduction in upwash, down wash, and wing tip vortices, induced drag is reduced.

------------------

Imagine you were landing in a C172 with both doors held open creating drag. Within 10 feet of the runway you closed the doors – less drag – aircraft is not slowing down as much and will “float” down the runway for a while. Not a great analogy but, maybe it will help.



Landing from the right seat can be interesting for the first few hours. Look more down the runway like your instructor told you when you first started flying.

JAFI
 
mini you're not gonna go to MAPD or anything like that are you? Is your goal to work for an airline? We'll help - please don't go the Mesa route!
 
Patmack18 said:
My instructor fixed that by taking me over to this tiny little 30' wide runway and making me land on it. See if you can find anything like that where you're at. If you're in FL I can tell you where to go.

mini, come to tulsa and find haskell 3710 x 30 ft.
and as far as landing i had the same problem, just remember what you were first taught, put the line between your legs, pretty soon you'll find it hard to land from the left. just imagine how messed up it would be to drive in england for the first time
 
Mini,

If you have not seen this before, visit Av8n.com. It's a great resource for aerodynamics. Also, buy Aerodynamics for Naval Aviators. The FAA pubs are good for general answers; however, students will really test your understanding on these subjects with lots of questions, so it's a good idea to really know your stuff. As far as the landings go, make sure looking down the runway and sitting straight. I had the problem of leaning over to the left and looking too close. However, I now fly better from the right. Never thought it would happen.

Patmack,

You guys still read Aerodynamics for Naval Aviators?
 
sbav8r said:
Also, buy Aerodynamics for Naval Aviators

lots of math in there...not exactly my strong point...will I still benefit from it?

I'll definitely check out the website you mentioned.

And I want to thank everyone for the responses...I'll be putting as much into my head as I can fit.

-mini
 

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