ERJ-140
Whistling $-Can-Fan :)
- Joined
- Apr 23, 2005
- Posts
- 170
So far this has been a great discussion. I am finding it hard to believe I am still talking about an airplane I have never flown (for the record, flew RJs for AE).
I applaud your knowledge GV but I have to call "b.s." on ya'!
Yes, but even the 135 has evolved. The oldest models we had were not as good as the newer ones. Embraer made signifiacant changes to all three RJ versions, adding fuel, thrust, changing cockpit, improving fadecs, etc.). The 135BJ has gone through a similar evolution.
This is the part where your knowledge hole appears. The airplane had vortilons from day one. The winglets were not added until nearly a decade later.
As for the engineering goes I can't comment. The winglets must do something or they would be gone. It is probably hard to mate winglets after the fact so some concessions have to be made. I think the strakes look cool any way.
Another BS call on you here. The wing tanks are the same as the LR (the Legacy actually claims a slight reduction in wing fuel from the LR). The fuel tanks in the fuselage don't seem too complicated: one bisected fwd one bisected aft. Grand total four fuse two wing tanks.
As for Embraer vs G design philosophy, take a llok at what it was built to do. Embraer told its customers it could deliver 2000-3000+ hours per year and lots of cycles with high reliability. That is what it was made to do and is doing. I cannot call that fragile. In fact, it may be overbuilt for the corporate world (we might be lucky to fly our Falcon 500 hours a year and we don't do five legs a day - what are FLOPS' Legacys doing? Three, four times that?). Also, as one pointed out earlier, have you seen the landing gear trunion/strut on a Legacy/ERJ? That thing is beefy! Hardly fragile.
Gulfstream is wonderful, but it sounds like they are a lot less efficient than they need to be if they are as overbuilt as you say.
C&DD may be a reputable organization, but I have to go with the people flying the airplane who tell me what Volumes 1 and 2 of the AOM say. C&DD are a little behind the ball.
Also, forgive my ignorance, but would the Legacy delay flutter with a boosted elevator?
I applaud your knowledge GV but I have to call "b.s." on ya'!
The Legacy is the same type certificate as the ERJ-135, it is the ERJ-135BJ.
Yes, but even the 135 has evolved. The oldest models we had were not as good as the newer ones. Embraer made signifiacant changes to all three RJ versions, adding fuel, thrust, changing cockpit, improving fadecs, etc.). The 135BJ has gone through a similar evolution.
And yes, I’ve watched it grow.
I’ve watched it grow poorly engineered winglets which disrupted airflow and introduced yaw instability requiring the installation of vortlons and ventral strakes.
This is the part where your knowledge hole appears. The airplane had vortilons from day one. The winglets were not added until nearly a decade later.
As for the engineering goes I can't comment. The winglets must do something or they would be gone. It is probably hard to mate winglets after the fact so some concessions have to be made. I think the strakes look cool any way.
I also watched it grow fuel cells in every imaginable region of it’s wing and fuselage in order to make it’s range guarantees.
Another BS call on you here. The wing tanks are the same as the LR (the Legacy actually claims a slight reduction in wing fuel from the LR). The fuel tanks in the fuselage don't seem too complicated: one bisected fwd one bisected aft. Grand total four fuse two wing tanks.
As for Embraer vs G design philosophy, take a llok at what it was built to do. Embraer told its customers it could deliver 2000-3000+ hours per year and lots of cycles with high reliability. That is what it was made to do and is doing. I cannot call that fragile. In fact, it may be overbuilt for the corporate world (we might be lucky to fly our Falcon 500 hours a year and we don't do five legs a day - what are FLOPS' Legacys doing? Three, four times that?). Also, as one pointed out earlier, have you seen the landing gear trunion/strut on a Legacy/ERJ? That thing is beefy! Hardly fragile.
Gulfstream is wonderful, but it sounds like they are a lot less efficient than they need to be if they are as overbuilt as you say.
C&DD may be a reputable organization, but I have to go with the people flying the airplane who tell me what Volumes 1 and 2 of the AOM say. C&DD are a little behind the ball.
Also, forgive my ignorance, but would the Legacy delay flutter with a boosted elevator?
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