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17th Sep 2017, 00:47
Replies: 138
Views: 27,051
Posted By ARRAKIS

The manufacturing of the Fw-190 A-0...

The manufacturing of the Fw-190 A-0 pre-production series started later than that, near the end of 1940. Possible reason of his memory problems?

Arrakis
Forum: Rotorheads
30th Jun 2016, 07:33
Replies: 10
Views: 2,205
Posted By ARRAKIS

I think you just answered all my questions. ...

I think you just answered all my questions.

As I see no further sense or value in this thread, over and out.

Arrakis
Forum: Rotorheads
29th Jun 2016, 23:55
Replies: 10
Views: 2,205
Posted By ARRAKIS

I don't think we have ever met, so ad personam...

I don't think we have ever met, so ad personam comments would be, hm, unsubstantiated.

Now, ad rem.
Aviation Valley is a cluster of over 100 entities, mostly companies, including PGZ through its...
Forum: Rotorheads
29th Jun 2016, 19:34
Replies: 10
Views: 2,205
Posted By ARRAKIS

After reading the first post of this thread,...

After reading the first post of this thread, imho, it contains to many errors.

Arrakis
Forum: Rotorheads
28th Jun 2016, 22:20
Replies: 1,915
Views: 1,410,844
Posted By ARRAKIS

There is a new version of the AIBN preliminary...

There is a new version of the AIBN preliminary report published today.
Investigation of helicopter accident at Tury near Bergen in Hordaland county, Norway | aibn...
Forum: Rotorheads
8th Jun 2016, 15:02
Replies: 355
Views: 183,768
Posted By ARRAKIS

Like Poland, in the process of buying 50 utility...

Like Poland, in the process of buying 50 utility helicopters. H225M was chosen.

Regarding Brasil.
https://pbs.twimg.com/media/CkObf4vVEAAr5B2.jpg

A.
Forum: Rotorheads
3rd Jun 2016, 09:03
Replies: 1,915
Views: 1,410,844
Posted By ARRAKIS

Is the MGB on the military variant (i.e....

Is the MGB on the military variant (i.e. EC725/H225M) exactly the same as on the EC225/H225?

A.
Forum: Rotorheads
3rd Jan 2016, 16:59
Replies: 13
Views: 2,922
Posted By ARRAKIS

9Aplus, my pure guess is around 880-900 kg/h,...

9Aplus,
my pure guess is around 880-900 kg/h, but would like to confirm.
Puting politics aside, I think it will be a good machine. At least as good as the older brother.

Arrakis
Forum: Rotorheads
2nd Jan 2016, 17:39
Replies: 13
Views: 2,922
Posted By ARRAKIS

9Aplus, any idea about the fuel burn of the...

9Aplus,
any idea about the fuel burn of the bird?

Arrakis
Forum: Rotorheads
14th Sep 2015, 21:08
Replies: 1,376
Views: 1,453,550
Posted By ARRAKIS

As nothing was posted so far... G2 down in Poland...

As nothing was posted so far... G2 down in Poland a week ago during a training flight, from low altitude. Most important, no casualties (instructor + pilot on board).
Nothing official published so...
11th Jul 2015, 11:00
Replies: 112
Views: 17,267
Posted By ARRAKIS

Beg to differ. During the 1897 census there...

Beg to differ.
During the 1897 census there was 35.55% Crimean Tatars, 33.11% Russians, 11.84% Ukrainians and 19.51 others. During 2001 census there was 58.5% Russians, 24.4% Ukrainians and 12.1%...
5th Jul 2015, 23:48
Replies: 112
Views: 17,267
Posted By ARRAKIS

To put things in the right perspective, some half...

To put things in the right perspective, some half of Poland was occupied at the time by the Russian Empire.


One has to make the difference between ethnic Russians and inhabitants of Soviet...
Forum: Rotorheads
22nd Apr 2015, 14:54
Replies: 11
Views: 4,804
Posted By ARRAKIS

A few corrections. The number has been reduced...

A few corrections.
The number has been reduced from 70 to 50:
8 ASW
8 for SOF
5 MEDEVAC
13 C/SAR
16 transport.

Could be more in the years to come.
Forum: Rotorheads
6th Mar 2015, 22:18
Replies: 77
Views: 37,361
Posted By ARRAKIS

I'm affraid not. From the begining, You are mixig...

I'm affraid not. From the begining, You are mixig things.

A 10 dB of accoustic power change gives effectively x2 volume change but also a little bit over 3x SPL change (noise level, we are talking...
Forum: Rotorheads
6th Mar 2015, 20:32
Replies: 77
Views: 37,361
Posted By ARRAKIS

Purely academic, but: based on press data: - 3...

Purely academic, but:
based on press data: - 3 dB noise, which means - 3 dB SPL.

In an audio system a 3 dB SPL change would require about 6 dB accoustic power change (x4) and would give about 50%...
Forum: Rotorheads
6th Mar 2015, 16:02
Replies: 77
Views: 37,361
Posted By ARRAKIS

Unless mistaken, logarithmic dB scale can be...

Unless mistaken, logarithmic dB scale can be applied to any physical quantity. If talking about noise, it is about sound pressure levels in Pa.

Arrakis
17th Jul 2014, 20:01
Replies: 1,644
Views: 1,995,938
Posted By ARRAKIS

Russian ITAR-TASS informing about an An-26 being...

Russian ITAR-TASS informing about an An-26 being shot down by a missile.
????-????: ????????????? ???????? - ????????? ??????????????? ??? ????? ??????? ??-26 ?????????? ???...
Forum: Rotorheads
16th Nov 2013, 08:02
Replies: 121
Views: 29,276
Posted By ARRAKIS

Polish Air Force has them for years. The last...

Polish Air Force has them for years. The last airframe loss was in 2002 IIRC (it wasn't exactly helicopter's fault) - a lot of luck and no human losses. You just have to fly/maintain them by the book...
Forum: Rotorheads
15th Nov 2013, 20:40
Replies: 121
Views: 29,276
Posted By ARRAKIS

Could you elaborate on that one? Arrakis

Could you elaborate on that one?

Arrakis
Forum: Rotorheads
10th Nov 2013, 08:08
Replies: 121
Views: 29,276
Posted By ARRAKIS

Or was it the opposite? The Danes assumed a...

Or was it the opposite? The Danes assumed a servicability that was never (and nowhere) written in the contract.
At least IIRC a report by a Danish GAO equivalent put it that way some years ago.
...
Forum: Rotorheads
25th Jul 2013, 10:30
Replies: 11
Views: 4,804
Posted By ARRAKIS

The competition is for Mi-8/14/17 replacement....

The competition is for Mi-8/14/17 replacement. The entire process is running for months, or in fact years. It's started with 26 helicopters and was, wisely, changed to 70. The final numbers should...
22nd Jul 2013, 18:06
Replies: 23
Views: 4,940
Posted By ARRAKIS

Afaik, she made her first trip in 1982, about a...

Afaik, she made her first trip in 1982, about a year before Sally Ride.

Arrakis
20th Jul 2013, 19:38
Replies: 23
Views: 4,940
Posted By ARRAKIS

Sorry, but this lady made it almost 30 years...

Sorry, but this lady made it almost 30 years earlier.
Valentina Tereshkova - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Valentina_Tereshkova)

Arrakis
Forum: Rotorheads
4th May 2013, 20:10
Replies: 18
Views: 5,542
Posted By ARRAKIS

Out of curiosity, autogated XR-5?, and what type...

Out of curiosity, autogated XR-5?, and what type of Gen III? Being produced for 30+ years, there are Gen III and Gen III. IIRC, EEV stopped manufactiring them in the UK in the mid 90s.

Arrakis
Forum: Rotorheads
29th Apr 2013, 15:50
Replies: 18
Views: 5,542
Posted By ARRAKIS

Iefan, look for MIL-STD-3009. It should be...

Iefan,
look for MIL-STD-3009. It should be available on the net. It will give you some idea what is it all about. Long story short, you are adapting the goggles AND the cockpit making them ...
Showing results 1 to 25 of 298
 


 
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