PPRuNe Forums - Interrupted T/O ?

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bafanguy

11th Jul 2017 20:43

Interrupted T/O ?

Maybe I'm the last person on earth to see this video but I'm too lazy to search for a previous explanation here.

What's the deal with this T/O ? The video appears to be edited (maybe for time ?) @ ~45 seconds so it's hard to tell how long the airplane sat at the stop point before continuing.

https://www.youtube.com/watch?v=JZt5-E2m3Dg

RAT 5

12th Jul 2017 05:08

Curious. During the RTO there does not appear to be any use of TR's or spoilers/airbrakes??

Carbon Bootprint

12th Jul 2017 23:15

From the comments on the YouTube site (no idea of veracity):

Quote:

This was a training flight with no passengers onboard so it was very light - therefore no hot brakes problem and it doesn't take very long to rotate. they would have calculated all that when they planned the flight at dispatch. The speed they would probably do this is about the cross check speed - 80 kts for Boeings.

bafanguy

14th Jul 2017 18:04

Quote:

Originally Posted by Carbon Bootprint (Post 9829007)

From the comments on the YouTube site (no idea of veracity):

Ah so...didn't read far enough into the comments to see the explanation.

So, they still roll out an airplane to do training bounces ?

davidjpowell

14th Jul 2017 20:21

Quote:

Originally Posted by Carbon Bootprint (Post 9829007)

From the comments on the YouTube site (no idea of veracity):

I'm calling Bull on that. How could they have calculated where they were going to stop, and how much runway would be remaining prior to stopping....

And how they would have recalculated their performance figures while stopped at an unknown distance on the runway.

bafanguy

14th Jul 2017 21:23

Until someone from CX wades in with facts we're just the Blind Men and the Elephant. It's interesting but probably has a rather mundane explanation.

So, they still roll out an airplane to do training bounces ? :-)))

DaveReidUK

14th Jul 2017 22:06

Quote:

Originally Posted by davidjpowell (Post 9831017)

And how they would have recalculated their performance figures while stopped at an unknown distance on the runway.

They stopped at an intersection, so the remaining TORA/TODA will have been easily determined.

FlightDetent

14th Jul 2017 22:30

Easily calculated if pre-planned, as a training scenario. The purpouse or benefit of such excericse - it would be interesting to learn about.

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