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Forum: Private Flying

15th Mar 2024, 10:00

Replies: 30

CG and stability

Views: 2,141

Posted By Genghis the Engineer

For a whole bunch of reasons, "weight" and "mass"...

For a whole bunch of reasons, "weight" and "mass" can be treated as interchangeable when you do everything at 1g. That includes doing your shopping, or calculating an aeroplane's weight/mass and...

Forum: Private Flying

8th Mar 2024, 13:49

Replies: 30

CG and stability

Views: 2,141

Posted By Genghis the Engineer

Negative. A Newton is the force required to...

Negative.

A Newton is the force required to accelerate a mass of 1kg at 1m/s/s.

Or at 1g, the force to hold up 98.1 grammes.

G[/color]

Forum: Private Flying

7th Mar 2024, 09:52

Replies: 30

CG and stability

Views: 2,141

Posted By Genghis the Engineer

Fair point, although the AoA sensor wasn't just...

Fair point, although the AoA sensor wasn't just used for MCAS, it was also used to feed the AFCS.

There's actually also a bunch of logic Boeing employed to tell you if you think you have a problem...

Forum: Private Flying

7th Mar 2024, 09:21

Replies: 30

CG and stability

Views: 2,141

Posted By Genghis the Engineer

Proper failsafe wants three AoA sensors, then if...

Proper failsafe wants three AoA sensors, then if any one is out of alignment, you disregard it and take the mean of the other two.

Two sensors is not really any better than one in a safety...

Forum: Private Flying

7th Mar 2024, 08:24

Replies: 30

CG and stability

Views: 2,141

Posted By Genghis the Engineer

You're about right for static stability. ...

You're about right for static stability.

There are two different dynamic modes, the long period - commonly called the phugoid or sometimes "porpoising" typically with a period around half a minute...

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