Difference between revisions of "AN/APS-21"

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==Description==
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== Description ==
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<!-- ''Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the radar and also about its features. Compile a list of air, ground, or naval vehicles that feature this radar in the game.'' -->
  
 
The '''AN/APS-21''' is an American [[Airborne Radars|airborne target detection (search) radar]]. In game it is often found fitted in conjunction with the [[AN/APG-26]] target tracking radar.
 
The '''AN/APS-21''' is an American [[Airborne Radars|airborne target detection (search) radar]]. In game it is often found fitted in conjunction with the [[AN/APG-26]] target tracking radar.
  
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===Vehicles equipped with this radar===
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=== Vehicles equipped with this radar ===
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<!-- List out vehicles that are equipped with the radar. -->
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<!-- ''List out vehicles that are equipped with the radar.'' -->
  
 
* {{Specs-Link|f3d_1}}
 
* {{Specs-Link|f3d_1}}
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* {{Specs-Link|javelin_fmk9}}
 
* {{Specs-Link|javelin_fmk9}}
  
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==General info / usage==
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== General info / usage ==
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<!-- Tell us about the tactical and technical characteristics of the radar. Describe its distinctive features, tactics of usage against the main opponents. -->
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<!-- ''Tell us about the tactical and technical characteristics of the radar. Describe its distinctive features and tactics of usage against the main opponents.'' -->
  
 
The AN/APS-21 is only a target detection radar so cannot, by itself, track targets or provide a lead indicator. However the radar is always fitted in conjunction with the [[AN/APG-26]] tracking radar, which can track targets (albeit only at a much closer range than the AN/APS-21 is capable of detecting targets at).
 
The AN/APS-21 is only a target detection radar so cannot, by itself, track targets or provide a lead indicator. However the radar is always fitted in conjunction with the [[AN/APG-26]] tracking radar, which can track targets (albeit only at a much closer range than the AN/APS-21 is capable of detecting targets at).
  
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{| class="wikitable" style="text-align:center"
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{| class="wikitable" style="text-align:center" width="50%"
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! colspan="4" | General Characteristics
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! colspan="7" | Features
 
|-
 
|-
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! {{Annotation|Maximum<br/>Detection<br/>Range|The maximum possible range at which a target can be detected}}
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! Band !! Pulse mode !! {{Annotation|PD|Pulse-Doppler}} mode !! {{Annotation|MTI|Moving target indication}} mode !! {{Annotation|IRST|Infrared search and track}} mode !! {{Annotation|TWS|Track-while-Scan}} mode !! {{Annotation|SARH|Able to guide semi-active radar-homing missiles}}
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! {{Annotation|Guaranteed<br/>Detection<br/>Range|The range, below which, detection of a target is practically guaranteed}}
 
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! {{Annotation|Minimum<br/>Detection<br/>Range|The range below which targets cannot be detected by the radar}}
 
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! {{Annotation|Range Settings|The available range scale settings of the radar}}
 
 
|-
 
|-
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| 45,000 m || 28,000 m || 1,000 m || 20 km, 45 km, 110 km,<br/>220 km, 370 km
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| I || ✓ || X || X || X || X || X
 
|-
 
|-
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! colspan="4" | Search Modes
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|}
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{| class="wikitable" style="text-align:center" width="50%"
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! colspan="7" | Search characteristics
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|-
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! Mode
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! {{Annotation|Max range|The maximum possible range at which a target can be detected}}
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! {{Annotation|Effective range|The maximum range at which a target can be detected with ~100% efficiency}}
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! {{Annotation|Display ranges|The available range scale settings of the radar}}
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! {{Annotation|IFF|Identification friend or foe}}
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|-
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| SRC || 45 km || 28 km || 20 km, 45 km, 110 km,<br>220 km, 370 km || ✓
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|-
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|}
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{| class="wikitable" style="text-align:center" width="50%"
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! colspan="7" | Search modes
 
|-
 
|-
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! {{Annotation|Search Mode|The search mode of the radar (some radars have multiple search modes with different characteristics)}}
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! Mode
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! {{Annotation|Azimuth Scan<br/>Angle|How far to each side the radar can scan}}
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! Scan type
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! {{Annotation|Elevation Scan<br/>Angle|How far up and down the radar can scan}}
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! {{Annotation|Azimuth|How far to each side the radar scans}}
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! {{Annotation|Scan Time|The time taken to complete one scan (the scan bar moving from one edge of the radar display to the other)}}
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! {{Annotation|Elevation|How far up and down the radar scans}}
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! {{Annotation|Period|The time taken to complete one scan (the scan bar moving from one edge of the scan sector to the other)}}
 
|-
 
|-
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| Default || ±85° || ±16° || 3.00 s
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! rowspan="2" | SRC
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| Two-way raster || ±30° || -10°/+20° || 3 s
 
|-
 
|-
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| Narrow || ±30° || ±16° || 1.00 s
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| Two-way raster || ±85° || -10°/+20° || 8.5 s
 
|-
 
|-
 
|}
 
|}
  
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===Comparison with analogues===
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=== Comparison with analogues ===
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<!-- Give a comparative description of similar or related radars. -->
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<!-- ''Give a comparative description of similar or related radars.'' -->
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Compared to other airborne radars the AN/APS-21 has a good range for its BR. The radar also has a very wide azimuth scanning angle, scanning to 85° in each direction. The radar does however have fairly poor elevation scanning angles, only able to scan 16 degrees up or down.
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Compared to other airborne radars, the AN/APS-21 has a good range for its BR. The radar also has a very wide azimuth scanning angle, scanning to 85° in each direction. The radar does however have fairly poor elevation scanning angles, only able to scan 16 degrees up or down.
  
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===Pros and cons===
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=== Pros and cons ===
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<!-- Summarise and briefly evaluate the radar in terms of its characteristics and combat effectiveness. Mark pros and cons as a list. -->
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<!-- ''Summarise and briefly evaluate the radar in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.'' -->
  
 
'''Pros:'''
 
'''Pros:'''
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== History ==
 
== History ==
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<!-- Examine the history of the creation and combat usage of this radar. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the radar and adding a block "/ History" (example: https://wiki.warthunder.com/(radar-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article. -->
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<!-- ''Examine the history of the creation and combat usage of the radar in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the radar and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Radar-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>.'' -->
  
 
The AN/APS-21 was developed by the Westinghouse Electric Corporation. It was developed in the late 1940s / early 50s as part of the AN/APQ-35 radar suite for the  Douglas [[F3D-1]] Skyknight. The suite consisted of the AN/APS-21 search radar, the [[AN/APG-26]] tracking radar, and the AN/APS-28 tail warning radar. A larger and more powerful version of the suite designated AN/APQ-36, was developed and fitted to later models of the [[F3D-1|F3D]] as well as the F7U Cutlass.
 
The AN/APS-21 was developed by the Westinghouse Electric Corporation. It was developed in the late 1940s / early 50s as part of the AN/APQ-35 radar suite for the  Douglas [[F3D-1]] Skyknight. The suite consisted of the AN/APS-21 search radar, the [[AN/APG-26]] tracking radar, and the AN/APS-28 tail warning radar. A larger and more powerful version of the suite designated AN/APQ-36, was developed and fitted to later models of the [[F3D-1|F3D]] as well as the F7U Cutlass.
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== Media ==
 
== Media ==
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''An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.''
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''Excellent additions to the article would be video guides, screenshots from the game, and photos.''
  
 
== See also ==
 
== See also ==
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<!-- Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:
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<!-- ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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reference to the article about the variant of the radar;
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* ''reference to articles about variants of the radar;''
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references to approximate analogues by other nations and research trees. -->
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* ''references to approximate analogues by other nations and research trees.'' -->
  
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* [[Airborne Radars]]
 
 
* [[AN/APG-26]]
 
* [[AN/APG-26]]
  
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''Paste links to sources and external resources, such as:''
 
''Paste links to sources and external resources, such as:''
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
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* ''encyclopedia page on weapon;''
 
 
* ''other literature.''
 
* ''other literature.''
  
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[[Category:Radars]]
 
 
[[Category:Aircraft radars]]
 
[[Category:Aircraft radars]]

Latest revision as of 15:23, 30 September 2023

Description

The AN/APS-21 is an American airborne target detection (search) radar. In game it is often found fitted in conjunction with the AN/APG-26 target tracking radar.

Vehicles equipped with this radar

General info / usage

The AN/APS-21 is only a target detection radar so cannot, by itself, track targets or provide a lead indicator. However the radar is always fitted in conjunction with the AN/APG-26 tracking radar, which can track targets (albeit only at a much closer range than the AN/APS-21 is capable of detecting targets at).

Features
Band Pulse mode PD mode MTI mode IRST mode TWS mode SARH
I ✓ X X X X X
Search characteristics
Mode Max range Effective range Display ranges IFF
SRC 45 km 28 km 20 km, 45 km, 110 km,
220 km, 370 km 		✓
Search modes
Mode Scan type Azimuth Elevation Period
SRC Two-way raster ±30° -10°/+20° 3 s
Two-way raster ±85° -10°/+20° 8.5 s

Comparison with analogues

Compared to other airborne radars, the AN/APS-21 has a good range for its BR. The radar also has a very wide azimuth scanning angle, scanning to 85° in each direction. The radar does however have fairly poor elevation scanning angles, only able to scan 16 degrees up or down.

Pros and cons

Pros:

  • Incredible 45 km maximum range
  • Guaranteed detection range of 28 km
  • Very good azimuth scanning angles
  • Two different search modes

Cons:

  • Relatively poor elevation scanning angles
  • Fairly slow scanning, taking 3 seconds to complete a scan on the default settings (long enough that blips can begin to fade between scans).
  • Relatively high minimum range (1 km)

History

The AN/APS-21 was developed by the Westinghouse Electric Corporation. It was developed in the late 1940s / early 50s as part of the AN/APQ-35 radar suite for the Douglas F3D-1 Skyknight. The suite consisted of the AN/APS-21 search radar, the AN/APG-26 tracking radar, and the AN/APS-28 tail warning radar. A larger and more powerful version of the suite designated AN/APQ-36, was developed and fitted to later models of the F3D as well as the F7U Cutlass.

Despite the AN/APS-21 being fitted to the Javelin F.(A.W.) Mk.9 and Mitsubishi T-2 in game neither of these vehicles used the radar in real life. The Javelin F.(A.W.) Mk.9 used either the American AN/APQ-43 (AI.22) radar suite, or the British AI.17 radar for later models. The Mitsubishi T-2 used the Mitsubishi Electric J/AWG-11. It is unclear whether these vehicles will be given historical radars in the future or if the AN/APS-21 will be considered "close enough" to their historical radar performance.

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • other literature.
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