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Forum: Rotorheads

1st Sep 2009, 11:09

Replies: 358

AW139 lost tail taxying DOH

Views: 150,022

Posted By shak'n

Here's a thought:

In my limited experience with AW139, we too had debonding i.e. bubbling of the tail boom skin only on the left hand side directly under the #1 engine (LHS) exhaust stack. This also coincided being...

Forum: Rotorheads

30th Jun 2009, 09:01

Replies: 1,887

Agusta AW139

Views: 1,112,531

Posted By shak'n

Hey Rusty, How are they hangin' old fruit, ...

Hey Rusty, How are they hangin' old fruit,

From my expereince with other helos and limited time on teh 139 I'd take a wirld guess and say if you allow either a 5kt reduction in TAS or a 5%...

Forum: Rotorheads

26th Jan 2009, 00:32

Replies: 390

Bell 412

Views: 218,351

Posted By shak'n

Food for Thought:

Shilka,

Just for info, we have had an occasion with a B412 which had a Hyd Sys fail and the aircraft was landed ASAP (thankfully) on a beach about 7nm from the field. After shutdown it was noted...

Forum: Rotorheads

26th Mar 2008, 06:18

Replies: 10

Blades questions

Views: 1,586

Posted By shak'n

Common Misconceptions - Blade Balancing

500e,

Nodrama has hit the nail on the head. If you can read through the site, it will explain your questions.

As is also mentioned on that site, for too long the rotary wing industry has had a...

Forum: Rotorheads

9th Oct 2007, 11:56

Replies: 18

Painting your blades

Views: 4,668

Posted By shak'n

Exactly Chucky, That's called Span moment...

Exactly Chucky,

That's called Span moment arm migration which results in insufficient mass adjustment on the head to counter significant lateral imbalance due to a change in mass distrubution...

Forum: Rotorheads

8th Oct 2007, 05:08

Replies: 18

Painting your blades

Views: 4,668

Posted By shak'n

Sort of right BlackHawk 9 (Sid??). You are...

Sort of right BlackHawk 9 (Sid??).

You are correct if you intend to fly these blades as a fixed set for their intended service life. The potential problem you face is when you inevitably have to...

Forum: Rotorheads

6th Feb 2005, 04:54

Replies: 18

Bifilar damper on UH-60

Views: 7,556

Posted By shak'n

Aaaahhhh, the old Nper rev debate resurfaces. ...

Aaaahhhh, the old Nper rev debate resurfaces.

Its remarkable that the helicopter owes it's very capabilities to rotor blades and how they perform - and yet they (the rotor blades) and their...

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