Landing gear tilt angle difference between a B777 200LR & 300ER
Thread Starter
Joined: Jun 2012
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From: india
JetII - the stow angle is 5 nose down (200LR) however the capability is -19 down. Question was which phase of flight it goes to -19?
What's more surprising is that in both pictures posted by me the only time 'ground' or 'touchdown surface' is shown is when the angle is -19. Rest images only a horizontal line is shown (to exaggerate a medium to differentiate the angle wrt zero datum)
Hence my doubt
What's more surprising is that in both pictures posted by me the only time 'ground' or 'touchdown surface' is shown is when the angle is -19. Rest images only a horizontal line is shown (to exaggerate a medium to differentiate the angle wrt zero datum)
Hence my doubt
Joined: Aug 2013
Posts: 30
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From: PA
Before,they were calling it telescoping, but at Paris, they are calling it a semi-lever or trailing link. Was thinking along the lines of the Embraer E2 landing gear, but not sure with this from Boeing.
737 MAX vice-president and general manager Keith Leverkuhn said in Feb 2017 ."Boeing has been evaluating multiple “good ideas”, including a shift from the 737’s traditional oleo strut to a trailing link landing gear design, A key criteria in the final decision (of the MAX-10) later this year will be the inherent reliability of the landing gear design,"
Keith Leverkuhn said on 2nd May about the -10 MLG: “The design focus is on the upper portion of the gear as it integrates with the actuator. In this area, within the tight confines of the existing wheel well, Boeing’s new design will do some “clever folding using a link mechanism at the top,”
"The lower section of the leg is also modified with an additional shock strut that fits inside the same forging. This moves the contact point aft a little bit. That’s fundamentally what we are doing and yes, it will look like a trailing link gear. We want to make it maintainable, reliable, and we are going to need that gear to get the performance we want out of the -10 but I’m confident in the solution set,”
737 MAX vice-president and general manager Keith Leverkuhn said in Feb 2017 ."Boeing has been evaluating multiple “good ideas”, including a shift from the 737’s traditional oleo strut to a trailing link landing gear design, A key criteria in the final decision (of the MAX-10) later this year will be the inherent reliability of the landing gear design,"
Keith Leverkuhn said on 2nd May about the -10 MLG: “The design focus is on the upper portion of the gear as it integrates with the actuator. In this area, within the tight confines of the existing wheel well, Boeing’s new design will do some “clever folding using a link mechanism at the top,”
"The lower section of the leg is also modified with an additional shock strut that fits inside the same forging. This moves the contact point aft a little bit. That’s fundamentally what we are doing and yes, it will look like a trailing link gear. We want to make it maintainable, reliable, and we are going to need that gear to get the performance we want out of the -10 but I’m confident in the solution set,”
Last edited by underfire; 1st July 2017 at 08:04.
Joined: Jan 2002
Posts: 1,271
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From: West Country
On rotation the aircraft rotates around the centre axle which then gives you the 'nose down' scenario - although you will never get to -19 in real life.
