Kalitta Air (K4) Information
04-25-2019, 07:33 PM
#1421
Gets Weekends Off
Joined APC: Feb 2011
Position: Licking the window
Posts: 461
Originally Posted by 4runner
They’ll take an engine off a 76 and mount it on a 74 when it can’t be used for ETOPS.
04-26-2019, 02:54 AM
#1426
Polyester Pilot
Joined APC: Mar 2011
Position: 777 CA
Posts: 510
Originally Posted by No Land 3
No data points, just a feeling.
04-26-2019, 06:15 AM
#1427
Gets Weekends Off
Joined APC: Apr 2010
Posts: 291
Originally Posted by 4runner
I wouldn’t think that 4 engines producing the same decibels would compound the noise level. Let’s say they’re at 90 dB. Do 2 producing 90 db’s each produce more noise than 4 producing 90 db’s each? I don’t know if there’s some acoustic phenomenon that non linearly increases the noise footprint if you increase the number of engines producing the same number of decibels.
04-26-2019, 09:07 AM
#1428
Gets Weekends Off
Joined APC: Aug 2009
Posts: 578
Originally Posted by BFMthisA10
ME101: excess thrust available vs required. Due to the ET requirement, the loaded 74 will climb out at a shallower angle than the laden 76, leaving a smaller noise footprint for the latter, even if the db were similar at liftoff.
04-26-2019, 11:10 AM
#1430
Gets Weekends Off
Joined APC: Apr 2010
Posts: 291
Originally Posted by 4runner
Aircraft flying 101: a HK departure has a level off altitude and minimum crossing restrictions. Geography 101: HK is mountains, bordered by Red China, surrounded by water. Most departures head towards the wet stuff and away from populated areas. Aircraft performance 401: a fully loaded 74 and 76-3 don’t have much different climb rates below 10,000. The whale(400’s) prefer the mid to upper 30’s, the 76(300) is a low to mid 30’s girl. Aircraft certification 101: all transport category aircraft meet minimum climb gradients. These are called segments.
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