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kitplane01 wrote:Is it not the case that steeper approaches reduce landing noise? That seems like a good thing!
TOGA10 wrote:kitplane01 wrote:Is it not the case that steeper approaches reduce landing noise? That seems like a good thing!
Depends. Like MRS, with its 4degree ILS/RNAV approach onto 31R, most A/C will have to be completely configured to start descending on the G/S. Thus, gear down and landing flaps out quite early on in the approach, which causes a lot of drag. Ideal once in the glide, not much thrust needed to keep your speed but before you intercept you will need a lot of thrust just to keep flying level. Ideally you do a continuous descent, which reduces flying level a lot but this is not always doable, with sometimes ATC interfering, other traffic affecting or winds are just not playing along. So, yes, once on the glide nice and quiet, before that, not so much.
kitplane01 wrote:TOGA10 wrote:kitplane01 wrote:Is it not the case that steeper approaches reduce landing noise? That seems like a good thing!
Depends. Like MRS, with its 4degree ILS/RNAV approach onto 31R, most A/C will have to be completely configured to start descending on the G/S. Thus, gear down and landing flaps out quite early on in the approach, which causes a lot of drag. Ideal once in the glide, not much thrust needed to keep your speed but before you intercept you will need a lot of thrust just to keep flying level. Ideally you do a continuous descent, which reduces flying level a lot but this is not always doable, with sometimes ATC interfering, other traffic affecting or winds are just not playing along. So, yes, once on the glide nice and quiet, before that, not so much.
I would think (I'm a pilot, but not an airline pilot) that most approaches are quite high before established on the glideslope, and that noise at these altitudes is unimportant. Isn't the outer market like 4-7 miles out??? And airlines established before that???
B777LRF wrote:Last time I went into Baghdad, it was a visual 10 degree descent from 10.000ft onto the runway. Didn't quite fit any criteria for 'stable approach', but was great fun to fly. The go-around, however, was the best bit of flying a commercial jet I've ever experienced; hauling around a 100ton jet in a tight, tight circuit (inside the airport perimeter) was about as good as it gets.
B777LRF wrote:Last time I went into Baghdad, it was a visual 10 degree descent from 10.000ft onto the runway. Didn't quite fit any criteria for 'stable approach', but was great fun to fly. The go-around, however, was the best bit of flying a commercial jet I've ever experienced; hauling around a 100ton jet in a tight, tight circuit (inside the airport perimeter) was about as good as it gets.