N701AA
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ERJ 190 Angle Of Attack On Landing

Thu Mar 05, 2009 7:25 am

I have noticed that the angle of attack of the ERJ190 on landing is very nose up. Today I flew the aircraft for the first time and from way back of the plane, where I was seating, the nose seem to come way up during flare. I was wondering how well this aircraft maneuvers at low speeds? Any issues with wing design?
 
David L
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RE: ERJ 190 Angle Of Attack On Landing

Thu Mar 05, 2009 1:23 pm



Quoting N701AA (Thread starter):
Any issues with wing design?

As long as there's no danger of a tail-strike and the crew have a good view of the runway, I'm not sure there would be any "issues".

I'm guessing the answer will centre on "leading edge devices". That's often the reason given for a nose-high approach.
 
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longhauler
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RE: ERJ 190 Angle Of Attack On Landing

Thu Mar 05, 2009 1:53 pm

While not AOA, pitch is normally about 5 degrees on touch down, maximum is 10 degrees. Any greater than that, and "tail strike protection" takes over. The fly by wire system controlling the pitch/elevators will reduce pitch on touchdown if it is too high.

The E190 is more "over winged" than "under winged". That is, the wings are quite a bit larger than they need to be, allowing higher cruise altitudes. That is why the heavier E195 uses the same wing, the growth was planned from the start.

If the flaps/slats were working properly and in correct position for landing, a high nose up landing is not necessary, and usually more the result of an incorrectly applied landing technique. Stretching the landing flare, to get a smooth touchdown, is rarely a good idea.
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FlyASAGuy2005
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RE: ERJ 190 Angle Of Attack On Landing

Thu Mar 05, 2009 2:52 pm

I had noticed this a while back when I was brousing photos of Jet Blue's first E-190s. I was always curious about it. N701AA, thanks for the post!


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And this is only Jet Blue. I saw it also on KLM Citty Hopper, etc.
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globeex
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RE: ERJ 190 Angle Of Attack On Landing

Thu Mar 05, 2009 2:57 pm



Quoting FlyASAGuy2005 (Reply 3):

Well, looking at the second picture, it rather seems like a take off.

GlobeEx
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UAL747
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RE: ERJ 190 Angle Of Attack On Landing

Thu Mar 05, 2009 3:58 pm

What is it about wing design that causes an aircraft to have a higher AOA? The MD-11, DC-10, L-1011's, 747's, and most airbii have higher angles of attacks on landing than Boeing twins. I know that because the tri-jets have an aft 2nd engine, they are heavier behind, therefore, it moves the wingbox aft due to the shift in weight, thus making higher AOA approaches and take-offs easier because of the shorter fuselage behind the main gear, but still, it's interesting to note these differences...

UAL
"Bangkok Tower, United 890 Heavy. Bangkok Tower, United 890 Heavy.....Okay, fine, we'll just turn 190 and Visual Our Way
 
pilotpip
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RE: ERJ 190 Angle Of Attack On Landing

Thu Mar 05, 2009 5:04 pm

You guys are confusing pitch with AOA. They aren't necessarily tied together.

As for the 190, on the 170, the max PITCH on landing is about 12 degrees. The 175 is about 11.5 (six feet longer). I would imagine than the 190, which is the same aircraft with another fuselage plug, will be the same as the 175 or perhaps less.

I have a four day starting Saturday. I'll try to pay attention to the PFD for you guys when on final and tell you my findings. It's honestly something I ever pay much attention to.
DMI
 
Bellerophon
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RE: ERJ 190 Angle Of Attack On Landing

Thu Mar 05, 2009 9:26 pm

N701AA

I suspect you may have inadvertently used the wrong term in asking your question, the terms Angle of Attack and Pitch Angle are frequently confused by many.

Put very simply:

Angle of Attack (Alpha / Incidence)

The angle between the airflow and the wing.


Pitch Angle (Pitch Attitude / PA)

The angle between the wing and the horizontal.


Pitch Angle or Attitude - which is what I suspect you meant to ask about - can be estimated reasonably accurately by a spectator, ask any USN pilot who has worked as a LSO on an aircraft carrier.

Angle of Attack - can only be known from looking at an alpha-meter, trying to estimate it from a still photo can be very misleading.


Best Regards

Bellerophon
 
LY744
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RE: ERJ 190 Angle Of Attack On Landing

Fri Mar 06, 2009 4:40 pm



Quoting UAL747 (Reply 5):
What is it about wing design that causes an aircraft to have a higher AOA?

If you mean having the ability (but not the necessity) to fly at a higher angle of attack, then it's a multitude of things. Slats are one example that is applicable to transport aircraft. A prominent one on modern fighter jets is leading edge root extensions (LERXs), or having a delta wing.


LY744.
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airbuster
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RE: ERJ 190 Angle Of Attack On Landing

Fri Mar 06, 2009 9:20 pm

Thread already exists as posted by myself 5 months ago:

http://www.airliners.net/aviation-fo...chid=238483&s=E-190+pitch#ID238483

And the actual designation is not ERJ 190 but just E-190, nothing regional about a 4000nm range...

rgds

AB
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2H4
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RE: ERJ 190 Angle Of Attack On Landing

Fri Mar 06, 2009 9:30 pm



Quoting Airbuster (Reply 9):
nothing regional about a 4000nm range...

Tell that to the legacies...

2H4
Intentionally Left Blank
 
pilotpip
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RE: ERJ 190 Angle Of Attack On Landing

Sat Mar 07, 2009 11:18 pm

To answer the question: It varies with weight but I was seeing a pitch angle of about 3 degrees on Final. I don't like to flare much past about 6 degrees because this plane likes to float. Again, these are numbers for a 170.

Quoting Airbuster (Reply 9):
And the actual designation is not ERJ 190 but just E-190, nothing regional about a 4000nm range...

My type rating says ERJ-170/190.
DMI
 
airbuster
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RE: ERJ 190 Angle Of Attack On Landing

Sun Mar 08, 2009 1:58 pm



Quoting Pilotpip (Reply 11):

Ey pips! I believe you but don't know where they got that from...is it maybe the officailly registered type designation and they use E-JETS as their marketing name?

Like my Fokker 70 and 100 are officially F28 Mk0070 / Mk 0100..

Here's the link to Embraer anyways...

http://www.embraercommercialjets.com/english/content/home/
FLY FOKKER JET LINE!
 
UAL747
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RE: ERJ 190 Angle Of Attack On Landing

Sun Mar 08, 2009 2:24 pm



Quoting Airbuster (Reply 9):
And the actual designation is not ERJ 190 but just E-190, nothing regional about a 4000nm range...

Wow, so this thing could fly BOS-LHR? I'm astounded! I didn't know it had that much range!

UAL
"Bangkok Tower, United 890 Heavy. Bangkok Tower, United 890 Heavy.....Okay, fine, we'll just turn 190 and Visual Our Way
 
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longhauler
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RE: ERJ 190 Angle Of Attack On Landing

Sun Mar 08, 2009 3:35 pm



Quoting UAL747 (Reply 13):
Wow, so this thing could fly BOS-LHR? I'm astounded! I didn't know it had that much range!

 Smile

Full fuel gives you about 2200 miles. The longest route we have flown the E190 is YYZ-SAN.
Just because I stopped arguing, doesn't mean I think you are right. It just means I gave up!
 
pilotpip
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RE: ERJ 190 Angle Of Attack On Landing

Sun Mar 08, 2009 4:38 pm



Quoting Airbuster (Reply 12):
Ey pips! I believe you but don't know where they got that from...is it maybe the officailly registered type designation and they use E-JETS as their marketing name?

Like my Fokker 70 and 100 are officially F28 Mk0070 / Mk 0100..

Here's the link to Embraer anyways...

Oddly enough, the 145 type here in the US is EMB-145
DMI
 
airbuster
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RE: ERJ 190 Angle Of Attack On Landing

Mon Mar 09, 2009 7:43 am



Quoting LongHauler (Reply 14):

Hey, you're correcto about that, i should have said, it has a 4000 KM range not NM...a bit over enthusiastic that was...

Still, you can doe transcons with the 190 or Paris-Middle East....

rgds

Ab
FLY FOKKER JET LINE!
 
mrocktor
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RE: ERJ 190 Angle Of Attack On Landing

Wed Mar 11, 2009 2:35 pm



Quoting Airbuster (Reply 9):
And the actual designation is not ERJ 190 but just E-190

Official designations are:

ERJ 170-100 (E-170)
ERJ 170-200 (E-175)
ERJ 190-100 (E-190)
ERJ 190-200 (E-195)
 
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WildcatYXU
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RE: ERJ 190 Angle Of Attack On Landing

Fri Mar 13, 2009 12:33 pm



Quoting GlobeEx (Reply 4):
Well, looking at the second picture, it rather seems like a take off.

Indeed. The flaps and slats on the first picture are much lower.

Quoting 2H4 (Reply 10):
Tell that to the legacies...

AC seems to know...
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tinpusher007
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RE: ERJ 190 Angle Of Attack On Landing

Sun Mar 15, 2009 5:39 pm

To further add to this discussion, the CRJ-900 that i fly which is equipped with slats still has a slight nose low pitch on final. It isn't until the flare that pitch increases to about 5 degrees nose up. Ive always been curious as to why this is. After flying it for a year Im still not sure.
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