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March 21, 2005 at 11:26 am in reply to: The less than famous loosers…. #2631545

JAZZ
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YC-14

Do you have pics of the YC-14 and YC-15??

Photo YC-14, in some respects it was a losser…in that it was the YC-15 that was used to develop the later YC-17. ‘Coanda effect’ used on the YC-14 was also used by the soviets on their Antonov An-72 Coaler.

March 20, 2005 at 5:31 am in reply to: The less than famous loosers…. #2631921

JAZZ
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AAH losers

US Attack helicopter competition was eventually won by Hughes with the Apache. Bell lost the competition with their Bell-409. Before the prototype play-off Boeing Vertol also submitted a proposal (see below) as did Kaman.

March 20, 2005 at 12:37 am in reply to: CONFORM sumarine hull design 1970's #2057127

JAZZ
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Speed V silence

Certainly raising the masts and periscopes will add extra noise. One of the objectives of the hull design was speed, but also in a closed down configuration with bridge and masts under cover of closely fitted hatches the submarine would move much more siliently through the water without the addition of a large sail.

Operationally submarines would rely on passive sonar and locating technologies – any submarine captain dislikes coming to periscope deapth as there is a greater risk that they will be detected. It is also the time that submarines will travel slowly – why ? beacuse you don’t want to leave a large tell-tale wake behind the periscope. Once a periscope is up – then simply the quastion of noise would be if the sail and extended periscope makes more noise than a slightly taller periscope?

March 19, 2005 at 9:51 pm in reply to: CONFORM sumarine hull design 1970's #2057197

JAZZ
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CONFORM- hull design picture

CONFORM hull design

March 19, 2005 at 1:58 am in reply to: Some Russian ship #2057215

JAZZ
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Should point out that the design stealth features work, it is just that they didn’t invest in stealth sensors and weapons.

Really trying to work out how to use quote function.

In relation to stealth features, while they may work it has been suggested that by western analysits that it didn’t give the results they were looking for. Success depends on how high you place the bar. severnya’s P20382 corvette and export model.

March 12, 2005 at 12:08 pm in reply to: World`s stealth programs #2634840

JAZZ
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British stealth concepts-artist impressions

Hi

Vortex happy to be corrected, but I was taught at school that the British invented radio (Marconi) Radar and the computer. I fact Bill Bryson and american writer of note did wrote or quated that 80% of things you find in and around your home can be traced back to the inventions of the British.

Attached here are some artists impressions from Avpro…they were a private company that advised the MOD on concepts, technologies and design for future weopons. crainfield – relates to Cranfield University – (military University) and they have undertaken a number of design studies within various faculties. Rest come mainly from the pens of BAE artists-designers.

Apart from BAE Replica the British have been very guarded about there role and research into stealth. French have a few airframes…but a number of UAV’s If I get time I will post them and then Russia’s…and then Rest of Worlds

March 11, 2005 at 10:37 pm in reply to: World`s stealth programs #2634966

JAZZ
Participant

Rightway UP

I hate looking at aircraft upside down. Replica is an interesting project, BAE and MD co-operated in a JSF submission and it lost, however perhaps more was interchanged between these companies as MD were coming from a lower stealth tech base than NG, Boeing or Lockheed). As far as the Replica programme is concerned it was fundamentally about measuring and shaping stealthy aircraft structure – other systems would just have had a nominal impact on the design. Some work on sensor interfacing is shown on the nose of the design.

As for stealth co-operation between US and the UK this has been a special relationship…in part because early radar stealth work had been carried out by the British after the war and that work was passed on to the Americans…who had the money do something with it ..to develop it. (UK struggled with costs keeping an empire and investing in a peace-time economy). Remember the Brits were the first to effectively use radar.

March 9, 2005 at 7:26 am in reply to: Some Russian ship #2058337

JAZZ
Participant

Russian Neustrashimy class…only one built. Western analists seem to think that the limited stealth measures built into it was not been successful, it is also more expensive than Severnaya Verf’s P20380 (steregushchy class corvette) that they are now building. Finances are limited and the strategic situation has changed from the time the Neustrashimy class was conceived which has lead to a modification of there naval defense needs.

March 9, 2005 at 5:52 am in reply to: World`s stealth programs #2636043

JAZZ
Participant

Swedish stealth

Swedish stealth concepts and work…they are underway with scaled UCAV flying, wind-tunnel testing and A-chamber work. Details – can’t be ar_ed

March 8, 2005 at 8:52 am in reply to: World`s stealth programs #2636644

JAZZ
Participant

Poland-Italy stealthy concepts

Just a few stealthy concepts from Poland and Italy

March 7, 2005 at 9:09 am in reply to: World`s stealth programs #2637079

JAZZ
Participant

German stealth work

Germany has had a number of projects and concept studies into stealthy airframes – Italy-Poland-sweden next week.

March 4, 2005 at 10:01 am in reply to: AS 19 Koala missile #2049166

JAZZ
Participant

Koala

Another pic indicative of 3M-25 Koala

February 24, 2005 at 10:12 am in reply to: Bazan BSAC 220 and 200 "pocket carriers" anyone have pics? #2059873

JAZZ
Participant

picture SAC220

This picture throws any more light on the catapult question…however you either know or your guessing.

February 24, 2005 at 9:50 am in reply to: PA-75 French Carrier concept 1970's #2059884

JAZZ
Participant

Thanks Peter G for the additional info, Terran suggested also that it may be PH-75 so I will search under that for a while Cheers JAZZ

February 24, 2005 at 9:14 am in reply to: PA-75 French Carrier concept 1970's #2059890

JAZZ
Participant

sorry I ment aircraft carriers in the broader sense…I don’t fancy telling Jane’s to take all the helicopters out of ‘Janes All the Worlds Aircraft’.

PA-75 is designation under which it tends to be classified – by janes and in Roger Chesneau book ‘Aircraft Carriers of the World 1914 to the Present’ but its worth a try..thanks
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