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Search: Posts Made By: Europa01
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Forum: Rumours & News
30th Sep 2019, 20:32
Replies: 4,656
Views: 4,791,209
Posted By Europa01

I note your reply on the clutch thanks. My logic...

I note your reply on the clutch thanks. My logic for my description of the clutch /trim wheel / stab motor went like this:-

If holding the trim wheel against rotation from the stab motor stops HS...
Forum: Rumours & News
29th Sep 2019, 14:19
Replies: 4,656
Views: 4,791,209
Posted By Europa01

To expand a little :- There will be an out of...

To expand a little :-
There will be an out of trim combination of HS AND position and aircraft speed which generates forces on the jack screw that are so large they can't be overcome by using the...
Forum: Rumours & News
29th Sep 2019, 12:15
Replies: 4,656
Views: 4,791,209
Posted By Europa01

Titter ye not etc. I believe there is a spring...

Titter ye not etc. I believe there is a spring loaded dog type clutch between the stab motor input to the jack screw gearbox and aft cable drum spindle which inputs directly.
Forum: Rumours & News
28th Sep 2019, 22:02
Replies: 4,656
Views: 4,791,209
Posted By Europa01

Titter ye not. Seems I haven't posted enough to...

Titter ye not. Seems I haven't posted enough to upload anything
Forum: Rumours & News
28th Sep 2019, 14:07
Replies: 4,656
Views: 4,791,209
Posted By Europa01

Agreed -this generic schematic shows a clutch. ...

Agreed -this generic schematic shows a clutch.
(sorry couldn't make the jpeg work - will try harder)
Forum: Rumours & News
28th Sep 2019, 12:19
Replies: 4,656
Views: 4,791,209
Posted By Europa01

Indulge me for a moment I'd like to suggest the...

Indulge me for a moment I'd like to suggest the following:-

As a matter of design principle the trim wheels are intended to be able to overcome a runaway stabiliser (i.e. If the stab motor is...
Forum: Rumours & News
8th Jul 2019, 21:54
Replies: 4,656
Views: 4,791,209
Posted By Europa01

Trim wheel forces

Walkon - you make a very good point about jackscrew torque. I think the information available tells us:-

For an aircraft not too far out of trim the trim wheels can just about overcome the Max...
Forum: Rumours & News
3rd Jul 2019, 21:30
Replies: 4,656
Views: 4,791,209
Posted By Europa01

Point taken - I was trying to point out that a...

Point taken - I was trying to point out that a description that is essentially Eaton advertising blurb may be overplaying the 'microprocessor' aspect of something that isn't quite so spangly. My...
Forum: Rumours & News
3rd Jul 2019, 20:12
Replies: 4,656
Views: 4,791,209
Posted By Europa01

Cutout Switches

Thanks for the succinct description of the cutout switch circuit functions. The design is strange isn't it? Given that previous 737s had two switches with different functions it is a real departure...
Forum: Rumours & News
2nd Jul 2019, 20:36
Replies: 4,656
Views: 4,791,209
Posted By Europa01

Cutout Switches

If I read 27-41 correctly in Smythe's #951 post, the 8 -9 contacts are the FCC (and hence MCAS) route direct to the Eaton stab motor. As has been discussed this item is clearly more than just a motor...
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