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Search: Posts Made By: nodrama
Showing results 1 to 35 of 318
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Forum: Rotorheads
19th Dec 2018, 07:55
Replies: 1,254
Views: 704,131
Posted By nodrama

OPC ? 🙂 EP instructs main SOV closure for...

OPC ? 🙂

EP instructs main SOV closure for high fluid temperature and low fluid quantity (providing other system is serviceable)
Forum: Rotorheads
18th Dec 2018, 21:27
Replies: 1,254
Views: 704,131
Posted By nodrama

Part of the above is incorrect (I was watching...

Part of the above is incorrect (I was watching the football, pathetic penalty shoot-out). The nut on the servo end of the pitch control rod doesn’t get touched during an actuator replacement. It is...
Forum: Rotorheads
18th Dec 2018, 21:12
Replies: 1,254
Views: 704,131
Posted By nodrama

Yes. I can’t help you with a detailed diagram...

Yes.
I can’t help you with a detailed diagram of the servo actuator system. I’m not involved with component strip and overhaul.
Forum: Rotorheads
18th Dec 2018, 19:59
Replies: 1,254
Views: 704,131
Posted By nodrama

55% reservoir quantity

55% reservoir quantity
Forum: Rotorheads
18th Dec 2018, 19:43
Replies: 1,254
Views: 704,131
Posted By nodrama

The spider slider isn’t splined on this aircraft...

The spider slider isn’t splined on this aircraft type. The scissor links transfer the rotation of the tail rotor hub to the spider.
Yes, there is a ‘nut’ holding the tail rotor hub on (there is...
Forum: Rotorheads
18th Dec 2018, 19:21
Replies: 1,254
Views: 704,131
Posted By nodrama

No. Six nuts hold the actuator (servo, hyd unit)...

No. Six nuts hold the actuator (servo, hyd unit) onto the gearbox. There’s the two nuts either end of the pitch control rod (shaft) and one bolt/ nut attaching the flying controls to the input/...
Forum: Rotorheads
17th Dec 2018, 09:58
Replies: 1,254
Views: 704,131
Posted By nodrama

Not a suggestion, fact. The picture is from...

Not a suggestion, fact.

The picture is from the Training School notes, not from an approved Technical Publication.
Forum: Rotorheads
14th Dec 2018, 13:50
Replies: 1,254
Views: 704,131
Posted By nodrama

Thanks OAP. That makes sense to me.

Thanks OAP. That makes sense to me.
Forum: Rotorheads
14th Dec 2018, 12:13
Replies: 1,254
Views: 704,131
Posted By nodrama

I'm not really one for speculating, so the...

I'm not really one for speculating, so the picture below is inferring nothing (except that I drew on it with my foot!). The diagram of the spider assembly to the pitch change rod (shaft) in the...
Forum: Rotorheads
14th Dec 2018, 12:00
Replies: 1,254
Views: 704,131
Posted By nodrama

Yes. I replied by email yesterday?

Yes. I replied by email yesterday?
Forum: Rotorheads
13th Dec 2018, 14:51
Replies: 1,254
Views: 704,131
Posted By nodrama

Hoistop - As I've said before, I've never seen...

Hoistop - As I've said before, I've never seen the inside workings of one of these servo actuators.
The diagram is a schematic of what I think the TR actuator looks like judging by the shape of the...
Forum: Rotorheads
13th Dec 2018, 11:36
Replies: 1,254
Views: 704,131
Posted By nodrama

OAP - you may be correct? It is still possible to...

OAP - you may be correct? It is still possible to relate this sentence ......

"The inner or outer ring faces have been ground to a precise dimension known as the preload offset. This offset...
Forum: Rotorheads
13th Dec 2018, 10:21
Replies: 1,254
Views: 704,131
Posted By nodrama

Pozidrive - I can't explain it any better than...

Pozidrive - I can't explain it any better than Crabs last diagram.... the one with the pressure switch in red. Also, replace 'swashplate' for 'spider' in that diagram.
Forum: Rotorheads
13th Dec 2018, 08:31
Replies: 1,254
Views: 704,131
Posted By nodrama

For those who might be interested, I've compiled...

For those who might be interested, I've compiled a 'tutorial' from another source that hopefully explains duplex bearing pre-load. The duplex bearing that is the subject of this thread is a...
Forum: Rotorheads
13th Dec 2018, 06:06
Replies: 1,254
Views: 704,131
Posted By nodrama

Pozidrive - "The control shaft passes through an...

Pozidrive - "The control shaft passes through an outer shaft, which forms part of the tail rotor hydraulic actuator piston" is referring to the part of the servo (actuator) that is boxed in Fig 3,...
Forum: Rotorheads
12th Dec 2018, 20:33
Replies: 1,254
Views: 704,131
Posted By nodrama

Duplex bearings are ball, not roller. To cope...

Duplex bearings are ball, not roller. To cope with radial and axle loads they work like this...
Forum: Rotorheads
12th Dec 2018, 14:09
Replies: 1,254
Views: 704,131
Posted By nodrama

I think so. Never seen the inside of a servo...

I think so. Never seen the inside of a servo that’s been stripped down. I do know that the pitch control rod is one part though, from input end to output end (where the nuts attach).
Forum: Rotorheads
12th Dec 2018, 12:45
Replies: 1,254
Views: 704,131
Posted By nodrama

I thought my crayons might ruin the clarity.....

I thought my crayons might ruin the clarity.....
Forum: Rotorheads
12th Dec 2018, 12:06
Replies: 1,254
Views: 704,131
Posted By nodrama

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/...

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/2000x1504/img_1463_1a0bcff1a323facbe0fcc87da45810ce465699c6.jpg
Forum: Rotorheads
11th Dec 2018, 17:32
Replies: 1,254
Views: 704,131
Posted By nodrama

Interestingly, all the 'bearings' in the AW169...

Interestingly, all the 'bearings' in the AW169 tail rotor (flap/ pitch/ lead-lag) are elastomeric. I'm wondering whether, with no hydraulic pressure to the TR control servo, the TR blades would...
Forum: Rotorheads
11th Dec 2018, 06:31
Replies: 1,254
Views: 704,131
Posted By nodrama

It isn't possible to even move the flying...

It isn't possible to even move the flying controls on an AW169 without at least one hydraulic system pressurised. That's why I made the point of saying earlier that the MR/ TR pitch control is...
Forum: Rotorheads
10th Dec 2018, 06:32
Replies: 1,254
Views: 704,131
Posted By nodrama

1. See previous posts 2. With one engine...

1. See previous posts
2. With one engine running in 'Acc Drive'
3. Yes
Forum: Rotorheads
10th Dec 2018, 04:47
Replies: 1,254
Views: 704,131
Posted By nodrama

https://cimg5.ibsrv.net/gimg/pprune.org-vbulletin/...

https://cimg5.ibsrv.net/gimg/pprune.org-vbulletin/975x682/flexiball_6e59cbde3f5f810e11957daba1280f143d872388.png

A ‘flexiball cable’ is what it is called. They’ve been used successfully by several...
Forum: Rotorheads
9th Dec 2018, 14:13
Replies: 1,254
Views: 704,131
Posted By nodrama

Forget the fact that I have type knowledge, from...

Forget the fact that I have type knowledge, from a maintenance engineer's point of view I found the report poorly written, with poor terminology, and confusing. This has been proven by the majority...
Forum: Rotorheads
8th Dec 2018, 17:26
Replies: 34
Views: 11,319
Posted By nodrama

Any components or structure that are lifed on...

Any components or structure that are lifed on landing cycles may incur a penalty factor on that life for every overweight cycle e.g PF of 2 would mean a cycle would be recorded as two cycles. It...
Forum: Rotorheads
8th Dec 2018, 14:51
Replies: 1,254
Views: 704,131
Posted By nodrama

The TR pitch control is hydraulically operated...

The TR pitch control is hydraulically operated (dual system), not hydraulically assisted. There is no manually 'selectable' TR hydraulic system shut off or manual reversion. This isn't a unique...
Forum: Rotorheads
8th Dec 2018, 13:55
Replies: 1,254
Views: 704,131
Posted By nodrama

I think what RVDT is pointing out is that it...

I think what RVDT is pointing out is that it wasn't 'a servo runaway'. That would be when a servo malfunctions and moves uncommanded. The hydraulic systems and servo were operating correctly, as far...
Forum: Rotorheads
7th Dec 2018, 13:24
Replies: 1,254
Views: 704,131
Posted By nodrama

I'm not sure that it would have done. The smaller...

I'm not sure that it would have done. The smaller nut would have tightened up against its cotter pin and still possibly spun with the pitch rod. It may have still welded itself to the pin carrier. It...
Forum: Rotorheads
30th Nov 2018, 19:17
Replies: 1,254
Views: 704,131
Posted By nodrama

Malabo Just to eliminate your query on landing...

Malabo
Just to eliminate your query on landing gear vs hydraulics. The landing gear on an AW169 is moved by electric motored actuators. No hydraulics involved at all.
Forum: Rotorheads
27th Nov 2018, 09:05
Replies: 66
Views: 15,546
Posted By nodrama

https://www.pprune.org/rotorheads/477083-vne-light...

https://www.pprune.org/rotorheads/477083-vne-light-helicopter-altitude-reduction-2.html#post9813152

Post #24

This is probably the most accurate, concise, and easily understood explanation of...
Forum: Rotorheads
25th Nov 2018, 14:01
Replies: 1,254
Views: 704,131
Posted By nodrama

In my opinion, all that one can tell from that...

In my opinion, all that one can tell from that photo is that there has been a catastrophic, and very sad, helicopter crash. That's what the AAIB are for.
That 'device' is nothing more than a cover,...
Forum: Rotorheads
23rd Nov 2018, 21:58
Replies: 1,254
Views: 704,131
Posted By nodrama

It’s at the outboard end of the red bit 😉 inside...

It’s at the outboard end of the red bit 😉 inside the pitch change spider. That’s all folks.
Forum: Rotorheads
23rd Nov 2018, 17:38
Replies: 1,254
Views: 704,131
Posted By nodrama

Tired of listening to 'I'm not familiar with the...

Tired of listening to 'I'm not familiar with the AW169' and the utter rubbish. The duplex bearing is at the end of the grey bit, at the output end of the red bit. Knock yourselves out guys - ...
Forum: Rotorheads
12th Dec 2013, 17:37
Replies: 90
Views: 23,831
Posted By nodrama

Ian Whitehouse NPAS COO - "If such a notice is...

Ian Whitehouse NPAS COO - "If such a notice is put in place (by the CAA etc) then we would immediately and carefully consider it"

...... Nollocks, you would DO it.

Why haven't NPAS taken the...
Forum: Rotorheads
11th Dec 2013, 15:24
Replies: 2,934
Views: 2,220,598
Posted By nodrama

DAPT, there are other aircraft at the Glasgow...

DAPT, there are other aircraft at the Glasgow heliport and they haven't fallen out of the sky due to contam fuel.

The AAIB took over 3 weeks to publish their findings for G-WNSB (super puma), and...
Showing results 1 to 35 of 318
 
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