N701AA From United States of America, joined Oct 2006, 61 posts, RR: 0 Posted (4 years 9 months 1 week 4 days 21 hours ago) and read 7268 times:
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?
LongHauler From Canada, joined Mar 2004, 4558 posts, RR: 36 Reply 2, posted (4 years 9 months 1 week 4 days 14 hours ago) and read 7012 times:
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.
Never gonna grow up, never gonna slow down .... Barefoot Blue Jean Night
UAL747 From , joined Dec 1969, posts, RR: Reply 5, posted (4 years 9 months 1 week 4 days 12 hours ago) and read 6969 times:
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...
Pilotpip From United States of America, joined Sep 2003, 3117 posts, RR: 11 Reply 6, posted (4 years 9 months 1 week 4 days 11 hours ago) and read 6945 times:
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.
LY744 From Canada, joined Feb 2001, 5536 posts, RR: 10 Reply 8, posted (4 years 9 months 1 week 3 days 11 hours ago) and read 6717 times:
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.
Pilotpip From United States of America, joined Sep 2003, 3117 posts, RR: 11 Reply 11, posted (4 years 9 months 1 week 2 days 5 hours ago) and read 6467 times:
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...
Tinpusher007 From United States of America, joined Feb 2005, 963 posts, RR: 1 Reply 19, posted (4 years 9 months 1 day 10 hours ago) and read 5662 times:
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.
"Flying isn't inherently dangerous...but very unforgiving of carelessness, incapacity or neglect."