RootsAir From Costa Rica, joined Feb 2005, 4188 posts, RR: 37 Posted (11 years 5 days 23 hours ago) and read 2474 times:
Last year I took SN brussels from GVA to Marseille on an AvroJet and I was surprised at how noisy the flaps were . When they were moving before landing in marseille, I sleeping and freaked out with the noise. Is it me or are ARJ's flaps that noisy
A man without the knowledge of his past history,culture and origins is like a tree without roots
SlamClick From United States of America, joined Nov 2003, 10062 posts, RR: 65
Reply 3, posted (11 years 5 days 22 hours ago) and read 2392 times:
The BAe or Avro does have that very noisy band. It actually occurs only (or loudest) when in transit. IIRC it was around 12-16 degrees on their way to or from the first setting which was 18.
It was programmed into our simulator and sitting in the briefing room near the end of the session before you, you could actually hear it. It was then time to hit the bathroom before getting into the box.
Once evening my wife and I were standing in our driveway when we lived near an airport. We could hear a jet idling by overhead but when we heard that sound my wife laughed out loud and said: "I don't even have to look up!" I was flying the "quadrophonic leaf blower" at that time and she knew the sound.
Happiness is not seeing another trite Ste. Maarten photo all week long.
Troubleshooter From Germany, joined Feb 2005, 423 posts, RR: 4
Reply 7, posted (11 years 5 days 8 hours ago) and read 2204 times:
I was once told that this noise on the "vierzylinder" (146/RJ) is produced by the slot between the flap panel and the fuselage. They introduced a shutter for the # 1 flap track on later 146 versions and on all RJs. But this did not solve the problem. I love that sound. That makes the ship more "personal".
Bri2k1 From United States of America, joined Dec 2004, 988 posts, RR: 3
Reply 10, posted (11 years 4 days 14 hours ago) and read 2085 times:
I just took UA from IAH to DEN today and I agree! We were on a 737-500. During the landing roll, with the ground spoilers still deployed, the flaps began to retract. From seat 17A, I was able to see the long green-colored bar beneath the spoilers rotate (noisily) to retract the flaps. It was very loud without the spoliers stowed. Howver, I also flew CO 737-800 and 900 craft over the weekend, and I didn't find them to be any less noisy.
Airgypsy From United States of America, joined Nov 1999, 130 posts, RR: 2
Reply 11, posted (11 years 4 days 14 hours ago) and read 2071 times:
The Howl of Hatfield is caused by the same thing that makes a blade of grass hum between your fingers.
The spoilers have a seal strip that is pressed down tight against the flap when it is retracted and then opens when the flap extends 0-18 degrees. A very large reed instrument. The seal strips are replaced for cracking because of this dynamic. Been there, done that on the -146.