Английская Википедия:AN/SPN-35

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The AN/SPN-35 is a computerized automatic landing system installed on the Tarawa-class amphibious assault ship and other LHA/LHD-class warships to give control for aircraft during the final approach and landing.

The Joint precision approach and landing system (JPALS) is slated to replace the AN/SPN-35 on U.S. Navy amphibious assault ships.

Description

The AN/SPN-35 is used to offer guidance to the aircraft pilot on final approach. It provides relative azimuth, range, and elevation information to the radar operator, who relays this as verbal guidance to the aircraft pilot on approach.

The AN/SPN-35A variant has two antennas: the azimuth antenna (AS-1292/TPN-8) and the elevation antenna (AS-1669/SPN-35). The azimuth antenna is located above the azimuth drive assembly on the stabilized yoke. The elevation antenna is mounted on the elevation drive assembly adjacent to the azimuth antenna.

Diagram of AN/SPN-35A

Diagram of AN/SPN-35A

History

The AN/SPN-35 was developed from the ground-based AN/TPN-8 landing approach control radar.Шаблон:Rp It was first evaluated on the Шаблон:USS in 1962, as an AN/TPN-8 mounted to an AN/SPN-6 stable pedestal and secured to an AN/SPN-8 platform. A prototype was evaluated aboard the Шаблон:USS about a year later as a replacement for the AN/SPN-8 on ASW carriers and small attack carriers.Шаблон:Rp As of 1965, the AN/SPN-35 was being used "primarily on the ASW type carriers."

The -35A variant was used onboard Шаблон:Sclasss prior to 1996, when it was replaced by the AN/SPN-46A/B. It remains in use on the Шаблон:Sclass and Шаблон:Sclass today.

Platforms

Файл:CVA-34 island 1960s.jpg

Photo of Шаблон:Ship with AN/SPN-35 (left) without radome

Шаблон:Flagicon Royal Australian Navy

• Шаблон:HMAS

Шаблон:Flagicon Spanish Navy

• Príncipe de AsturiasШаблон:Rp

Шаблон:Flagicon Royal Navy

• Шаблон:HMS

Шаблон:Flagicon United States Navy

• Ship classes known to carry this system:
  • Tarawa-class amphibious assault ship
  • Wasp-class amphibious assault ship
  • America-class amphibious assault ship
  • Шаблон:Sclass - Replaced by AN/SPN-46 in the late 90s.
• Individual ships known to carry this system:
  • Шаблон:USS
  • Шаблон:USSШаблон:Rp
  • Шаблон:USS - Installed 1965 while undergoing overhaul at San Francisco Bay Naval Shipyard.
  • Шаблон:USS - Initial testing and evaluation
  • Шаблон:USS - Initial testing and evaluation
  • Шаблон:USS
  • Шаблон:USS
  • Шаблон:USS
  • USS Inchon (MCS-12)

Variants

• AN/SPN-35: Original model that entered service.
• AN/SPN-35A: Improved stabilization system to compensate for pitch and roll of carrier. Replaces the original mechanical-hydraulic stabilization of the original with an electromechanical stabilization system.Шаблон:Rp
• AN/SPN-35B:
• AN/SPN-35C: Upgrade to AN/SPN-35B. Adds Moving Target Detection (MTD), Track While Scan (TWS), and Built-In Test (BIT) capability.

See also

• AN/SPN-46(V)1

External links

• Шаблон:HathiTrust Шаблон:Hyphen Refer to page 7 of Sept. 1963 issue for discussion of impact for SPN-35 relative to what came before.