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Search: Posts Made By: dascanio
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Forum: Rotorheads
30th Dec 2023, 15:43
Replies: 344
Views: 171,301
Posted By dascanio

maybe they were “gently” used, but the first was...

maybe they were “gently” used, but the first was delivered in 2011, the last in 2023, so, your average does not mean much…
Forum: Rotorheads
12th Aug 2023, 15:33
Replies: 9
Views: 1,926
Posted By dascanio

Cabin dimension

actually, cabin is at least as large as a twin H135
Forum: Rotorheads
26th Sep 2018, 14:30
Replies: 78
Views: 36,063
Posted By dascanio

Alcohol is prohibited. Only water and soft drinks

Alcohol is prohibited. Only water and soft drinks
Forum: Rotorheads
26th Sep 2018, 14:04
Replies: 78
Views: 36,063
Posted By dascanio

https://cimg1.ibsrv.net/gimg/pprune.org-vbulletin/...

https://cimg1.ibsrv.net/gimg/pprune.org-vbulletin/285x285/24e1e0c6_a49f_4cb7_a6a7_28a3e2fdf87f_e53f9f08aec5cef04bd2d2bb5c9eae194ab04897.png
SASless, please, allow us to celebrate for a while....
Forum: Rotorheads
24th Nov 2016, 12:24
Replies: 214
Views: 161,109
Posted By dascanio

Exactly. Since the most critical areas of the ...

Exactly.
Since the most critical areas of the gearbox are the two high speed inputs, a clever "passive" method to continue to feed oil in case of loss of lubrication has been designed, that does...
Forum: Rotorheads
12th Oct 2016, 13:45
Replies: 180
Views: 135,559
Posted By dascanio

Industry Insider, a technical question: In AAIB...

Industry Insider, a technical question:
In AAIB report on G-REDL, page 17, it is written that second stage on AS332L2 increased the dimension of planet gears and reduced their number from 9 to 8....
Forum: Rotorheads
21st Jun 2016, 07:37
Replies: 355
Views: 212,878
Posted By dascanio

rung gear

@riff raff:

If I remember well, at least CH47 (!) uses the epicyclic stage ring gear as a structural member.

But I agree with you that almost every MRGB has outer race of the epicyclic stage...
Forum: Rotorheads
5th Jun 2016, 09:08
Replies: 1,949
Views: 1,587,301
Posted By dascanio

@AW009: unfortunately you are mistaken. The sun...

@AW009: unfortunately you are mistaken. The sun gear extremely worn you are referring to is, actually, the SECOND stage sun gear, that is integral with the first stage planet carrier. The first stage...
Forum: Rotorheads
4th Jun 2016, 16:39
Replies: 1,949
Views: 1,587,301
Posted By dascanio

Trolling?

No, @AW009, They don't, BUT YOU ARE NOT AIBN, as well!
we need, as a whole industry, a serious investigation, not self appointed experts.
Besides, the issue of the bevel gear has been discussed in...
Forum: Rotorheads
7th Nov 2013, 16:20
Replies: 305
Views: 85,728
Posted By dascanio

Angel TC: the one below is a press release, so, apart...

TC: the one below is a press release, so, apart from some good PR, states anyway some facts...

____________________
09/04/13
AW101 completes challenging mid-Atlantic rescue
...
Forum: Rotorheads
20th Sep 2013, 10:39
Replies: 7
Views: 3,750
Posted By dascanio

Well, Sultan, if you look at my locations, and...

Well, Sultan,
if you look at my locations, and the content of my (not many) posts, you might easily infer that I do not work for Sikorsky...

... but this does not mean that I think that what...
Forum: Rotorheads
26th Jun 2013, 09:51
Replies: 214
Views: 161,109
Posted By dascanio

Pitts: Not exactly! the test is part of...

Pitts:

Not exactly!
the test is part of the Type Investigation for the certification of a new helicopter.
As such, it is discussed with the airworthiness Authorities.
And, there is a...
Forum: Rotorheads
21st Apr 2013, 10:42
Replies: 214
Views: 161,109
Posted By dascanio

Gears

Vfr440,

Wrong. From existing AW139 literature:

Input: bevel gears
Planetary: spur
No splines between carrier and mast, integral connection
No combining gearbox, this was technology of the...
Forum: Rotorheads
17th Apr 2013, 17:52
Replies: 214
Views: 161,109
Posted By dascanio

From AW official Press Release:

From AW official Press Release:
Forum: Rotorheads
9th Feb 2013, 12:24
Replies: 1,362
Views: 377,466
Posted By dascanio

Hilife, From official AgustaWestland press...

Hilife,
From official AgustaWestland press release of last July:

"AgustaWestland’s Yeovil facility has already been playing an important role in the design and development of the AW189....
Forum: Rotorheads
3rd Dec 2012, 11:34
Replies: 994
Views: 294,986
Posted By dascanio

Riff Raff: Thanks for your interesting...

Riff Raff:

Thanks for your interesting posting.

I agree with your general comments on differences on carburizing vs nitriding.
Actually, as you pointed out, we are speculating, because we do...
Forum: Rotorheads
1st Dec 2012, 16:43
Replies: 994
Views: 294,986
Posted By dascanio

Riff Raff, To add some bits to your post: ...

Riff Raff,
To add some bits to your post:


- nitrided depth is smaller than carburized depth, thus preventing, usually, the final grinding of big spiral bevel teeth, as you posted
- however,...
Forum: Rotorheads
21st Nov 2012, 23:39
Replies: 994
Views: 294,986
Posted By dascanio

Colibrì, the power required to drive the two...

Colibrì, the power required to drive the two pumps is minimal, respect to, say, MCP,( less than 10 HP, I imagine), their contribution to the Bearings reaction is truly minor, the side force of the ...
Forum: Rotorheads
20th Nov 2012, 16:31
Replies: 994
Views: 294,986
Posted By dascanio

gearbox design

Just some clarifications about some of the posts of today:

1. There is a manufacturing reason why the weld is in that place, such kind of bevel gears are finished before welding, because, with...
Forum: Rotorheads
27th Jun 2011, 13:39
Replies: 284
Views: 155,485
Posted By dascanio

No Italians?

Tottigol,
I agree with you!

And I hope that the ones that bought the 540 AW139s sold until now, think the same...
Forum: Rotorheads
6th May 2011, 07:44
Replies: 72
Views: 16,752
Posted By dascanio

Apelles

BlakMax,

The ancient Roman Pliny connects a number of sayings to the most famous Greek painter Apelles. One of these refers to his practice of exhibiting his works in the front of his shop, then...
Forum: Rotorheads
3rd Jan 2011, 18:38
Replies: 1,141
Views: 340,779
Posted By dascanio

Mrgb after loss of lube

Riff,
I completely agree with your technical explanation.
A run dry condition is an Emergency for the gearbox, and after this,
the transmission is not intended to be serviceable again. As a...
Showing results 1 to 22 of 22


 
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