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Search: Posts Made By: Hilife
Showing results 1 to 35 of 357
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Forum: Rotorheads
19th Jan 2024, 07:27
Replies: 12
Views: 2,070
Posted By Hilife

1. For an engines efficiency, look no further...

1. For an engines efficiency, look no further that its specific fuel consumption (SFC) and use the lb/(shp-h) as a comparison from one engine to another.
2. In principle, a reduction in SFC, means...
Forum: Rotorheads
2nd Jan 2024, 23:32
Replies: 14
Views: 4,497
Posted By Hilife

I have to say I was a little puzzled to read of...

I have to say I was a little puzzled to read of this incident, in what turned out to be the windiest day this winter so far, in this region of Wiltshire, and there were plenty of severe weather...
Forum: Rotorheads
17th Dec 2023, 12:31
Replies: 49
Views: 14,521
Posted By Hilife

There isn’t enough customer interest in the B to...

There isn’t enough customer interest in the B to warrant bringing it to the market, so LM/SAC took the decision to shelve it for now (ever?).

As for the A+ option. Just start with a new build...
Forum: Rotorheads
15th Nov 2023, 10:08
Replies: 560
Views: 153,700
Posted By Hilife

Don’t you see. It’s part of the ongoing...

Don’t you see. It’s part of the ongoing sweetener, for not being selected as 'The Preferred Bidder’ for NMH. ;)
Forum: Rotorheads
5th Nov 2023, 05:51
Replies: 560
Views: 153,700
Posted By Hilife

True, but for anyone looking at a new and untried...

True, but for anyone looking at a new and untried (In-Role) platform, 'Risk' and unknown 'NRE/RoM costs' alone, should be front-and-centre considerations on your KUR radar.
Forum: Rotorheads
20th Oct 2023, 22:37
Replies: 16
Views: 1,997
Posted By Hilife

I am implying that that compressor efficiency is...

I am implying that that compressor efficiency is directly related to Ng speed.

Again, yes and no.

As a general rule, compressors are designed to be at their most efficient at their optimum...
Forum: Rotorheads
19th Oct 2023, 09:20
Replies: 16
Views: 1,997
Posted By Hilife

How would lowering the collective (that is,...

How would lowering the collective (that is, reducing power) help to cool the engine? I understand that it is less fuel, but less fuel means a lower Ng, so less air coming in since the compressor is...
Forum: Military Aviation
16th Sep 2023, 19:27
Replies: 39
Views: 11,816
Posted By Hilife

Or maybe some of those poor guys who got sacked...

Or maybe some of those poor guys who got sacked by P & O are still around and could crew them.

On reduced pay? :)
Forum: Rotorheads
16th Sep 2023, 19:20
Replies: 560
Views: 153,700
Posted By Hilife

An FMS UH-60M solution does not make sense for...

An FMS UH-60M solution does not make sense for the UK, as the Mike is uniquely US Army specific, particularly on the COMM’s front, so the UK would just end up stripping out very expensive hardware...
Forum: Rotorheads
13th Sep 2023, 11:43
Replies: 560
Views: 153,700
Posted By Hilife

I don't know the source of this quote, but it's...

I don't know the source of this quote, but it's clearly a long way off the mark!

Not at all. You can purchase an airworthy restricted category UH-60A for less than $3m.

- any military BH...
Forum: Rotorheads
22nd Aug 2023, 03:41
Replies: 170
Views: 136,189
Posted By Hilife

Another S-76C++ would make sense, but time will...

Another S-76C++ would make sense, but time will tell.
Forum: Rotorheads
19th May 2023, 08:37
Replies: 560
Views: 153,700
Posted By Hilife

I recall a press release from an MoD/JHC source...

I recall a press release from an MoD/JHC source several years’ ago, saying something along the lines, that the price to sustain the Puma HC2 fleet in-service post 2025 was more than a ‘King’s...
Forum: Rotorheads
15th May 2023, 18:39
Replies: 271
Views: 54,122
Posted By Hilife

A good point. Although, the precursor to...

A good point.

Although, the precursor to FLRAA was JMR/FVL and in the early days, it was not so much about speed and range (I believe 230kn and a combat radius of 263nm were the original...
Forum: Rotorheads
10th May 2023, 20:58
Replies: 8
Views: 2,297
Posted By Hilife

I suspect a penalty break, so is this change of...

I suspect a penalty break, so is this change of heart a potential shoe-in for the BPOL perhaps, or is the M a very different platform to a Para-Public H225?
Forum: Military Aviation
6th May 2023, 23:30
Replies: 24
Views: 3,391
Posted By Hilife

Slightly off topic, but it is my understanding...

Slightly off topic, but it is my understanding that a report last year by the Law Commission of England, Wales and Scotchland, suggested that the legal responsibility for accidents caused by...
Forum: Rotorheads
23rd Mar 2023, 21:46
Replies: 78
Views: 20,969
Posted By Hilife

An accountant!!! You are such a Dag...

An accountant!!!

You are such a Dag ozbiggles.

If you are looking for a gun fight, then I’m afraid you are pointing your pistol at the wrong fella, as I merely highlighted the managed risk...
Forum: Rotorheads
23rd Mar 2023, 08:05
Replies: 78
Views: 20,969
Posted By Hilife

As the UH-60 series were designed for the US Army...

As the UH-60 series were designed for the US Army and are ostensibly a land theatre platform, therefore not much of a need for floats, why add weight, cost and maintenance for a rarely needed option....
Forum: Military Aviation
19th Mar 2023, 18:46
Replies: 160
Views: 63,200
Posted By Hilife

I think it fair to suggest we will never be 100%...

I think it fair to suggest we will never be 100% certain of the exact cause, but was it not considered 'most likely' an engineering quality issue (not FI associated) relating to the fwd SUBA...
Forum: Rotorheads
15th Mar 2023, 21:21
Replies: 560
Views: 153,700
Posted By Hilife

The following links might shine a little light on...

The following links might shine a little light on some of the questions and from the horses mouth.

AW149: Designed to Survive on the Modern Battlefield

Part 1...
Forum: Rotorheads
14th Mar 2023, 11:25
Replies: 560
Views: 153,700
Posted By Hilife

......certified against DEFStan 00-970 Does...

......certified against DEFStan 00-970

Does DEFStan 00-970 (MAA), not simply mirror EASA CS?
Forum: Rotorheads
13th Mar 2023, 16:35
Replies: 560
Views: 153,700
Posted By Hilife

It was always my understanding that the...

It was always my understanding that the BlackHawk’s ballistic requirement were the capability to fly safely for 1/2 hour after flight critical controls had been hit by a 23mm high-explosive...
Forum: Military Aviation
5th Feb 2023, 19:21
Replies: 370
Views: 128,389
Posted By Hilife

Presumably, being a balloon, then like any other...

Presumably, being a balloon, then like any other balloon it just went where the wind took it?

Balloon pilots are able to use varying winds at different altitudes for directional control (clearly...
Forum: Rotorheads
21st Jan 2023, 10:55
Replies: 8
Views: 1,507
Posted By Hilife

Sorry to burst your bubble but they only ever...

Sorry to burst your bubble but they only ever made one as a prototype, the Blackhawk never went into production...

Prototype: If you are referring to the original Sikorsky YUH-60/YUH-60A (S-70A)...
Forum: Military Aviation
10th Jan 2023, 08:26
Replies: 118
Views: 44,429
Posted By Hilife

In noting this, could one presume that 'No Nuts'...

In noting this, could one presume that 'No Nuts' is up for consideration for the next tugboat build?
Forum: Military Aviation
28th Jun 2022, 23:41
Replies: 21
Views: 5,246
Posted By Hilife

Provoke debate. As modern English is...

Provoke debate.



As modern English is ostensibly derived from Germanic dialects and vocabulary, it should be noted that the modern English word Man derives from the Old Germanic word Mann,...
Forum: Rotorheads
28th Jun 2022, 22:13
Replies: 26
Views: 6,648
Posted By Hilife

Walnut shells... As I recall, the walnut...

Walnut shells...

As I recall, the walnut shells were used to clean the gearbox internal surfaces and oil ways and blasting out any residual shell particles using high pressure air/nitrogen had...
Forum: Rotorheads
30th Apr 2022, 23:00
Replies: 11
Views: 1,775
Posted By Hilife

My legs are grey. My ears are gnarled. My eyes...

My legs are grey. My ears are gnarled. My eyes are old and bent, so I'm getting rusty on my PT6 theory in my old age, but......

Were your platform a twin power plant, then my educated guess would...
Forum: Military Aviation
27th Mar 2022, 19:51
Replies: 50
Views: 18,962
Posted By Hilife

The Bell at Odiham. Now there's an establishment...

The Bell at Odiham. Now there's an establishment I'd long forgotten about. Forty years ago and more I used to walk down from the base for the reward of real ale in a locals pub, tucked away from High...
Forum: Rotorheads
12th Mar 2022, 14:02
Replies: 28
Views: 8,067
Posted By Hilife

Clearly SAC had way more than a foot in the door...

Clearly SAC had way more than a foot in the door with the US DoD procurement office, but as I recall, SAC had no ‘serious’ intention of bidding a platform for the LUH program.

It was Eurocopter,...
Forum: Military Aviation
4th Mar 2022, 06:50
Replies: 21
Views: 6,622
Posted By Hilife

I have fond memories of serving on the 240th...

I have fond memories of serving on the 240th vertical pursuit ship school when BN arrived. Good times.

As for replacements. I believe the retirement of some nine of the original delivery platforms...
Forum: Rotorheads
7th Dec 2021, 06:50
Replies: 40
Views: 8,582
Posted By Hilife

The FCU acts as the Ng Governor, by venting Py...

The FCU acts as the Ng Governor, by venting Py air when Ng is higher than required.
Forum: Rotorheads
3rd Dec 2021, 21:37
Replies: 40
Views: 8,582
Posted By Hilife

It could be a requirement set by AT, rather than...

It could be a requirement set by AT, rather than P&WC and if the case, I suspect to reduce the likelihood of a hot start, as it allows the pilot to ensure they have good NG speed prior to lighting it...
Forum: Rotorheads
29th Nov 2021, 09:06
Replies: 560
Views: 153,700
Posted By Hilife

As has been pointed out in previous posts, both...

As has been pointed out in previous posts, both contender solutions are merely spinoffs of ‘Commercial Platforms’ and neither has any proven combat experience, let alone demonstrated that the...
Forum: Rotorheads
27th Jun 2021, 08:07
Replies: 13
Views: 2,091
Posted By Hilife

In its drive for more diversity and inclusion,...

In its drive for more diversity and inclusion, the US Army has admitted teething problems in allowing dyslexic sign writers to join its ranks.
Forum: Rotorheads
22nd Jun 2021, 11:07
Replies: 72
Views: 12,601
Posted By Hilife

You missed out Northern Ireland and Great Western...

You missed out Northern Ireland and Great Western and I have both Warwickshire & Northants & Derbyshire, Leicestershire & Rutland coming under the TAAS (The Air Ambulance Service) umbrella.

Open...
Showing results 1 to 35 of 357
 
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