Jump to content


Photo

Water Dragons Of The Middle Kingdom


  • Please log in to reply
273 replies to this topic

#261 Stuart Galbraith

Stuart Galbraith

    Just Another Salisbury Tourist

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 55,157 posts

Posted 01 October 2019 - 0920 AM

Chinese parade here. Fast forward to 1 hour for the tanks.


  • 0

#262 KV7

KV7

    Crew

  • Members
  • PipPip
  • 2,023 posts

Posted 01 October 2019 - 1915 PM

Look at the spherical Mao Xinyu @ 1.39.48.


  • 0

#263 JasonJ

JasonJ

    nonbiri

  • Members
  • PipPip
  • 11,128 posts

Posted 03 October 2019 - 0401 AM

UUV

uuv2.jpg


  • 0

#264 Nobu

Nobu

    Crew

  • Members
  • PipPip
  • 3,116 posts

Posted 03 October 2019 - 1206 PM

Chinese parade here. Fast forward to 1 hour for the tanks.

 

It actually had some Macy's Thanksgiving Day Parade-like elements to it, which were amusing.

 

Xi did not look that interested in his role as MC. 


  • 0

#265 JasonJ

JasonJ

    nonbiri

  • Members
  • PipPip
  • 11,128 posts

Posted 14 October 2019 - 0721 AM

Carrier 002 thought to be getting ready to head out for 8th round of sea trials.

carrier0028thgo.jpg


  • 0

#266 JasonJ

JasonJ

    nonbiri

  • Members
  • PipPip
  • 11,128 posts

Posted 23 October 2019 - 1957 PM

Latest on carrier 003 construction.

carrier003c1.jpg


  • 0

#267 JasonJ

JasonJ

    nonbiri

  • Members
  • PipPip
  • 11,128 posts

Posted 24 October 2019 - 0547 AM

2nd Type 75 LHD construction.

type75a9.jpg


  • 0

#268 JasonJ

JasonJ

    nonbiri

  • Members
  • PipPip
  • 11,128 posts

Posted 08 November 2019 - 0058 AM

Visual differences between earlier and late Type 52D destroyers.

type52ddestroyers.jpg


  • 0

#269 KV7

KV7

    Crew

  • Members
  • PipPip
  • 2,023 posts

Posted 10 November 2019 - 0720 AM

The 'new radar' is the Type 518 L-band frequency agile long range air search radar.


Edited by KV7, 10 November 2019 - 2202 PM.

  • 0

#270 JasonJ

JasonJ

    nonbiri

  • Members
  • PipPip
  • 11,128 posts

Posted 10 November 2019 - 0745 AM

The 'new radar' is the Type 518 L-band.

 

I don't recall seeing that kind of looking radar on warships of other nations. Looks like an old fashion antenna that could easily be used by other naval powers. What advantage would its L-band have over other radars and why don't other warships feature it?


  • 0

#271 KV7

KV7

    Crew

  • Members
  • PipPip
  • 2,023 posts

Posted 10 November 2019 - 1514 PM

 

The 'new radar' is the Type 518 L-band.

 

I don't recall seeing that kind of looking radar on warships of other nations. Looks like an old fashion antenna that could easily be used by other naval powers. What advantage would its L-band have over other radars and why don't other warships feature it?

 

It is replacing the Type 517 VHF (~1 metre wavelength) air search radar which is a long range search radar with some anti-stealth capability, but limited resolution.

Type 518 probably operates into the very low end of L band, near UHF - i.e around 30 cm wavelength. Target resolution, will consequently be somewhat better, whilst some anti-stealth capability is retained.

L band is also much better than VHF for picking up low flying targets. This was one reason for the UK going from VHF(type 965) to L band (Type 1022) search radars.

See also the US AN/SPS-49 (a large L band air search radar).


Edited by KV7, 10 November 2019 - 2203 PM.

  • 0

#272 KV7

KV7

    Crew

  • Members
  • PipPip
  • 2,023 posts

Posted 10 November 2019 - 1736 PM

SPS-49 has had some controversy. there was a decision to replace it, but a replacement was not available, so the sets are just being removed.

'The AN/SPY-1 Aegis radar system is the most powerful of the CG-47 sensors. This system is the Nation's most advanced shipboard air search sensor providing location and targeting information to destroy airborne threats. However, the CG-47 had another air search radar system known as the SPS-49. The SPS-49 radar has some shortcomings and is not an adequate backup for the AEGIS SPY-l radar. Therefore, retaining the SPS-49 radar system seemed highly questionable to some. The Navy installed SPS-49 radar systems on the CG-47 class against the wishes of the House Appropriations Committee and contrary to a recommendation of the GAO. The CG-47' Project office officials and program sponsors disagreed, however, and contended that the SPS-49 provides a useful function and enhances operational flexibility. However, the long-range surveillance function can be performed by the Aegis radar system in a superior manner.'

https://www.globalse...s/an-sps-49.htm


  • 0

#273 JasonJ

JasonJ

    nonbiri

  • Members
  • PipPip
  • 11,128 posts

Posted 10 November 2019 - 2150 PM

Ok thanks for that.
  • 0

#274 KV7

KV7

    Crew

  • Members
  • PipPip
  • 2,023 posts

Posted 10 November 2019 - 2205 PM

On the replacement program, see here:

https://missiledefen...nce-radar-easr/

https://www.janes.co...9-radar-antenna


 


Edited by KV7, 10 November 2019 - 2211 PM.

  • 0