libellegeoff
Topic Author
Posts: 1
Joined: Wed Oct 19, 2011 9:15 am

B707 Kueger Sequence

Tue Apr 10, 2018 11:17 am

Later models had 13 Kruegers on the Leading Edge.

they are sequenced on both extension and retraction, but it is not the same sequence.

the extension sequence seems to be 1,2,4,5,3,6,7,8,9,10,11,12,13 from Youtube video

I assume you cannot extend or retract at the same time, because of aerodynamic issues - having all Kruegers in the "Barn-door" position at the same time cannot be good for lift

does anyone know ...

Why the sequence is different between extension and retraction ?

and

How are they actuated / controlled ? not by a single drive shaft I assume ?
thanks in advance,
 
User avatar
Balerit
Posts: 579
Joined: Sun Aug 23, 2015 9:14 am

Re: B707 Kueger Sequence

Tue Apr 10, 2018 12:08 pm

They were hydraulic powered with their own actuators and I don't remember any sequence involved, it was possibly the hydraulic pressure that caused that.
Licensed Aircraft Maintenance Engineer (retired).
 
BravoOne
Posts: 2828
Joined: Fri Apr 12, 2013 2:27 pm

Re: B707 Kueger Sequence

Tue Apr 10, 2018 4:38 pm

Sounds like a good oral question when the student has gotten everything correct....so far:)
 
User avatar
tb727
Posts: 2060
Joined: Thu Jun 30, 2005 1:40 pm

Re: B707 Kueger Sequence

Wed Apr 11, 2018 3:34 pm

BravoOne wrote:
Sounds like a good oral question when the student has gotten everything correct....so far:)


lmao, now that's funny.
Too lazy to work, too scared to steal!
 
Max Q
Posts: 6668
Joined: Wed May 09, 2001 12:40 pm

Re: B707 Kueger Sequence

Thu Apr 12, 2018 4:24 am

tb727 wrote:
BravoOne wrote:
Sounds like a good oral question when the student has gotten everything correct....so far:)


lmao, now that's funny.



TB


Got a 727 oral question for you:


What’s the only non essential bus on the air
craft ?


The bus that takes the FO to the plane


Drum roll..
The best contribution to safety is a competent Pilot.
 
User avatar
tb727
Posts: 2060
Joined: Thu Jun 30, 2005 1:40 pm

Re: B707 Kueger Sequence

Thu Apr 12, 2018 12:07 pm

Max Q wrote:
tb727 wrote:
BravoOne wrote:
Sounds like a good oral question when the student has gotten everything correct....so far:)


lmao, now that's funny.



TB


Got a 727 oral question for you:


What’s the only non essential bus on the air
craft ?


The bus that takes the FO to the plane


Drum roll..


:lol: :lol: :lol: I have actually never heard that one!
Too lazy to work, too scared to steal!
 
Max Q
Posts: 6668
Joined: Wed May 09, 2001 12:40 pm

Re: B707 Kueger Sequence

Fri Apr 13, 2018 7:39 am

tb727 wrote:
Max Q wrote:
tb727 wrote:

lmao, now that's funny.



TB


Got a 727 oral question for you:


What’s the only non essential bus on the air
craft ?


The bus that takes the FO to the plane


Drum roll..


:lol: :lol: :lol: I have actually never heard that one!



That was the actual last question on my 727 FE oral exam at Continental


I was stumped, thinking about truck driving
school until the examiner started laughing
and let me in on the joke


Best wishes TB
The best contribution to safety is a competent Pilot.

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