Turbulence speed

[jonnyamici]

Hello everybody. I have a question regarding the turbulence penetration speed. The 767 turbulence speed is 290 KIAS/ .78 Mach. My question is, if the ECON speed is .77 Mach, should I accelerate to .78 Mach if turbulence is encountered?

Thanks

[Nimer767]

Which ever is less

[burgerbun]

Yep, seat belts signs on, open the speed window, 0.78 in it, then start the clock!

[BOAC]

Yep, seat belts signs on, - you forgot to add - 'now grab a chance to go to the toilet':)

[1jz]

Max turb penetration speed is max, it doesn't preclude flying slower than that.

[Pugilistic Animus]

Vtp is a comprimise between ending up dangerously fast or dangerously slow
as gusts can lead to both conditions... therefore without very good reasons one should not generally fly slower than Vtp either...I've written about those limitations before but I don't want to repeat all of that...I'll try to find those old posts as the argument is quite involved; note my typing at times is bad---so if I wrote something that doesn't make sense let me know...:uhoh:

http://www.pprune.org/professional-pilot-training-includes-ground-studies/388963-principles-flight.html

my post in the above may make more sense in light of seeing FAR25.341
Note I'm speaking about a 'loophole' in the gust envelope

Electronic Code of Federal Regulations: (http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&sid=6708ceb97869c127e77d6060edac5081&rgn=div8&view=text&node=14:1.0.1.3.11.3.164.10&idno=14)

:)

[AerocatS2A]

Yep, turbulence penetration speed is a target air speed for turbulence penetration. It gives adequate margin above the stall and below any limiting speeds assuming you're not flying too high for the conditions encountered. The type I fly allows for lower rough air speeds at low level to facilitate climb through the turbulent layer, but in general you should aim for the published RA speed.

Something else that people tend to forget is that it is a speed for severe turbulence. In your case you don't need to fly at M0.78 just because you've had to put the seat belt signs on. On the other hand you don't want to be caught out either. Personally I'd not worry about the speed for light turbulence, and I'd go for RA speed for moderate turbulence in case it becomes severe and of course try to find a better level and/or try to get out of the CB I'd blundered into ;).

[sevenstrokeroll]

do yourself a big favor:

go out and buy the following books:

1. "FLY THE WING" by Webb

2. "Handling the Big Jets" by Dp Davies

read them...absorb everything.

[Pugilistic Animus]

sevenstrokeroll Yes!!!:ok::ok::ok:

From your name I think you'd agree with me that these are insane performances!...:)
Gene Krupa (http://www.drummerworld.com/Videos/genekrupadrumsolo47.html)
Gene Krupa - Shadow Rhapsodie - 1947 (http://www.drummerworld.com/Videos/genekrupashadowrhapsodie.html)
Gene Krupa - SING SING SING - 1937 (http://www.drummerworld.com/Videos/genekrupaorchestra40.html)

[jonnyamici]

Thank you all!

[John Farley]

PA

Quite agree. Mind you I would bet he could handle a relight in the hover too.

[Pugilistic Animus]

Mr. Farley probably single handed...now I can't resist a few more--as he blows EVERYBODY out of the H2O---even Buddy Rich...everytime I'm at my kit I feel immensely inadequate as a result---sometimes I don't know why we even try...:uhoh:

Gene Krupa - Young Man With A Beat - YouTube
Big Sid Catlett & Gene Krupa in "Boy, What a Girl" - YouTube
http://www.youtube.com/watch?v=u8XlZWqb7FA


:ok::D:ok: