PPRuNe Forums - View Single Post - Short-field Performance Enhancement Program, 737
Old 3rd January 2011 | 12:10
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KristianNorway
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Joined: Jul 2006
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From: Norway
Short-field Performance Enhancement Program, 737

Hey guys!

I'm looking into the short-field performance enhancement program for the 737, and I have some questions. I'm hoping for some well thought out answers:

"Slats are sealed for take-off to flap position 15 (compared to the current 10) to allow the wing to generate more lift at lower rotation angles."

- Sealed for T/O position. What does this mean? From what I've understood they remain at intermediate position ("sealed"?) until landing flaps (30/40).

"Two-position tailskid that extends an extra 127mm (5ins) for landing protection. This allows greater angles of attack to be safely flown thereby reducing Vref and hence landing distance."

- Why does this allow for greater angles of attack? Is it a certification question?

"Flap load relief function active from flap 10 or greater."

- Why does this reduce landing distance or shorten T/O-distance?

"Slats only travel to Full Ext when TE flaps are beyond 25 (compared to the current 5). Autoslat function available from flap 1 to 25."

- Again. Why does this reduce landing distance or shorten T/O-distance?


Thanks to all contributors
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