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Search: Posts Made By: ARRAKIS
Showing results 1 to 35 of 304
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Forum: Rotorheads
9th Feb 2024, 15:11
Replies: 186
Views: 38,982
Posted By ARRAKIS

There is more than that. It looks like...

There is more than that. It looks like prioritizing off-the-shelf/quick results solutions in order to get as much results as possible in a relatively short time.

US Army spent billions on a new...
Forum: Rotorheads
26th Jan 2024, 12:31
Replies: 344
Views: 171,716
Posted By ARRAKIS

End of the MRH-90. Australia Is Literally...

End of the MRH-90.
Australia Is Literally Burying Its Doomed NH90 Helicopter Fleet (thedrive.com) (https://www.thedrive.com/the-war-zone/australia-literally-burying-its-doomed-nh90-helicopter-fleet)
Forum: Rotorheads
24th Jan 2024, 19:09
Replies: 9
Views: 1,748
Posted By ARRAKIS

AH-64A had it but if I'm not mistaken, blade...

AH-64A had it but if I'm not mistaken, blade de-icing was removed on the AH-64D.

A.
Forum: Rotorheads
17th Aug 2023, 11:42
Replies: 344
Views: 171,716
Posted By ARRAKIS

A full list of FY 2023 reimbursement rates can be...

A full list of FY 2023 reimbursement rates can be found below. Around 4 k$ for a UH-60M. Approximately 8 k$ for a CH-47F.
...
Forum: Military Aviation
16th Jun 2022, 17:21
Replies: 16
Views: 4,918
Posted By ARRAKIS

AW149 cabin is wider and shorter than S-70. As a...

AW149 cabin is wider and shorter than S-70. As a result, in the former, the pilots seats backreasts are pratically in-line with the gunner window frame edge. I wonder if and to what extent it will...
Forum: Military Aviation
16th Jun 2022, 13:59
Replies: 16
Views: 4,918
Posted By ARRAKIS

"The plan is to operate them in a safe distance...

"The plan is to operate them in a safe distance from an adversary, reducing the need for ballistic protection etc. (and decreasing the appeal of S70)."

Given the fact, that some of these...
Forum: Military Aviation
16th Sep 2017, 23:47
Replies: 138
Views: 34,733
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, 06:33
Replies: 10
Views: 2,492
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, 22:55
Replies: 10
Views: 2,492
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, 18:34
Replies: 10
Views: 2,492
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, 21:20
Replies: 1,949
Views: 1,588,465
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 Turøy near Bergen in Hordaland county, Norway | aibn...
Forum: Rotorheads
8th Jun 2016, 14:02
Replies: 355
Views: 213,080
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, 08:03
Replies: 1,949
Views: 1,588,465
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, 15:59
Replies: 13
Views: 3,188
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, 16:39
Replies: 13
Views: 3,188
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, 20:08
Replies: 1,615
Views: 1,869,977
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...
Forum: Military Aviation
11th Jul 2015, 10:00
Replies: 112
Views: 22,214
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%...
Forum: Military Aviation
5th Jul 2015, 22:48
Replies: 112
Views: 22,214
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, 13:54
Replies: 11
Views: 4,975
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, 21:18
Replies: 170
Views: 136,557
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, 19:32
Replies: 170
Views: 136,557
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, 15:02
Replies: 170
Views: 136,557
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
Forum: Rumours & News
17th Jul 2014, 19:01
Replies: 1,644
Views: 2,240,263
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, 07:02
Replies: 121
Views: 38,722
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, 19:40
Replies: 121
Views: 38,722
Posted By ARRAKIS

Could you elaborate on that one? Arrakis

Could you elaborate on that one?

Arrakis
Forum: Rotorheads
10th Nov 2013, 07:08
Replies: 121
Views: 38,722
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, 09:30
Replies: 11
Views: 4,975
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...
Forum: Military Aviation
22nd Jul 2013, 17:06
Replies: 23
Views: 6,397
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
Forum: Military Aviation
20th Jul 2013, 18:38
Replies: 23
Views: 6,397
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, 19:10
Replies: 18
Views: 7,450
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, 14:50
Replies: 18
Views: 7,450
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 ...
Forum: Rotorheads
28th Apr 2013, 08:51
Replies: 18
Views: 7,450
Posted By ARRAKIS

Iefan, a few points. The FOV is...

Iefan,
a few points.


The FOV is increased by the optics, so 1.5x wider FOV means also an image resolution (in lp/mm) decreased 1.5 times. A point usually omitted.

Most of the questions you...
Forum: Rotorheads
11th Apr 2013, 12:11
Replies: 129
Views: 101,850
Posted By ARRAKIS

Based on what was published, there was a...

Based on what was published, there was a requirement for 24" per seat width and at least 66" cabin height. If nothing changed, it would mean more a S-92 size cabin.


Arrakis
Forum: Rotorheads
12th Mar 2013, 08:29
Replies: 1,615
Views: 1,869,977
Posted By ARRAKIS

The price includes more than just 2*G2. ...

The price includes more than just 2*G2.

Arrakis
Forum: Rotorheads
11th Mar 2013, 20:46
Replies: 1,615
Views: 1,869,977
Posted By ARRAKIS

G2 chosen a few days ago as the ab initio trainer...

G2 chosen a few days ago as the ab initio trainer for the Polish Air Force Academy (not a surprise :E). Two machines for starters. Probably a few more to come.

Arrakis
Showing results 1 to 35 of 304
 
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