Basic radar queries

[markturner1960]

Hi, I am just starting to learn the radar and have some basic questions that were not immediately apparent in reading Chucks guide. Here are a couple of screen shots of the SA & radar page. I had set waypoint zero as bullseye and there are several friendly and enemy planes in front of me:

 

Here are my questions:

 

How to undesignate a locked target? In the above, I locked a target, but repeated presses of the un- designate button failed to remove the VC and range info from the HUD......

 

Following from that, I only seemed to be able to cycle the azimuth between 20 and 40 degrees? Why?

 

On the radar screen, what are the BRA indications top left and centre bottom of screen referring to?

 

What is the small green dot on the radar screen?

 

Cheers!

 

 

Sent from my iPad using Tapatalk

[Biga42]

1) Undesignate - pressing undesignate you cicle thru targets, to undesignate it all you have to go back to RWS and press SIL and turn it on again.

2) Because in TWS it is relative to the amount of BARs your radar is scanning.

3) it is the Bearing and Range. Top Left where your TDC is pointing to, botton center relative to the nose of your aircraft.

4) Steering Dot. The Steering Dot in conjunction with the NIRD/ASE circle indicates lead angle steering to the locked target. The pilot should fly to place the Steering Dot inside the NIRD/ASE circle to satisfy lead angle computations. The Steering Dot will flash when within 15 degrees of the RADAR’s azimuth limit and when within 5 degrees of the RADAR’s elevation limit. (page 129 of EA hornet Manual)

[AvroLanc]

1) You can't undesignate a target in TWS. There's always a L&S contact bugged. In RWS however you can press RSET on OSB 19 to clear the L&S. No need to SIL on/off.....

3) The BRA indications are relative to the BULLSEYE point you set, in your case WP 0. Top left is TDC relative to bullseye, bottom centre in your aircraft pos relative to BULLS.

[markturner1960]

thanks, understood...so in TWS, the azimuth ranges available vary according to the bar pattern selected?

 

[AvroLanc]

thanks, understood...so in TWS, the azimuth ranges available vary according to the bar pattern selected?

 

Yes, more BARs, less AZI available.

[rob10]

thanks, understood...so in TWS, the azimuth ranges available vary according to the bar pattern selected?

IN TWS MODE:

2 bar - 20, 40, 80 deg azimuth avail

4 bar - 20 and 40 deg azimuth avail

6 bar - only 20 deg azimuth avail

[Bunny Clark]

The Hornet TWS (and LTWS in RWS mode) likes to always have a designated target. In Nav mode you won't see attack symbology on the RDR Page or HUD. If you would like to dump all your target tracks and start over, you can do that with the Reset (RSET) button on the right side of the RDR page. That will remove the currently designated target (and DT2, if present) and re-prioritize the trackfiles. The NWS/Undesignate button will drop an STT lock, but otherwise it served only to "step" from one track file to another in the other radar modes.

 

TWS is limited to scanning a volume of space that is less than the full capabilities of the radar. This is done to ensure that the radar is hitting every contact often enough to provide adequate tracking of targets for attack. For this reason it's usually better to search for targets in RWS, which can have a larger scan volume, and switch to TWS for an engagement.

[markturner1960]

Thx all

[Ziptie]

1) Undesignate - pressing undesignate you cicle thru targets, to undesignate it all you have to go back to RWS and press SIL and turn it on again.

 

Incorrect. You can go back to RWS and press RESET OSB to clear DT1 / DT2.

 

Cheers,

 

Ziptie

[Biga42]

yes I forgot the reset button...

[markturner1960]

1) You can't undesignate a target in TWS. There's always a L&S contact bugged. In RWS however you can press RSET on OSB 19 to clear the L&S. No need to SIL on/off.....

3) The BRA indications are relative to the BULLSEYE point you set, in your case WP 0. Top left is TDC relative to bullseye, bottom centre in your aircraft pos relative to BULLS.

 

 

 

regarding the BRA indications, if I don’t have a bullseye selected, do they revert to something else?

 

[KlarSnow]

See pictures below should hopefully straighten it out for you.

 

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If you do not have a Bullseye (A/A Waypoint) selected on the HSI>Data sublevel:

You will only get cursor BRA from you in the middle left of the display when you do not have a Launch and Steer (LnS, track with a star in it) Designated. As soon as you designate an LnS track, in any mode, that BRA readout goes away.

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If you do have a Bullseye (A/A Waypoint) selected on the HSI>Data sublevel:

In addition to the cursor BRA, will also get the Cursor Bullseye readout in the upper left without an LnS Selected, and ownship bullseye in the lower center.

 

[ATTACH=JSON]{"data-align":"none","data-attachmentid":"7125254","data-size":"full"}[/ATTACH]

 

As soon as you Designate an LnS in any mode (LTWS, TWS, STT, or RWS) the upper left Bullseye readout is now only LnS bullseye, and the BRA readout as before goes away.

[ATTACH=JSON]{"data-align":"none","data-attachmentid":"7125253","data-size":"full"}[/ATTACH]

 

Ownship bullseye will remain regardless of LnS designation.

[Rhinozherous]

See pictures below should hopefully straighten it out for you.

 

Thank you very much, very clear description!

[markturner1960]

Fantastic, thanks, trying to find all this stuff out is tricky as you seem to only get snippets - Chuck should incorporate that last post into his guide !

[markturner1960]

i have another small query....

 

what is the green crosshair in the radar screen and how is it utilised?

[Harker]

i have another small query....

 

what is the green crosshair in the radar screen and how is it utilised?

The one that was added with the last update? It's the ACQ point cue. It shows the highest priority track in RWS+LTWS, after the L&S and DT2 (if the latter two exist).

 

Without an L&S: It shows which track is going to become the L&S if you press the NWS/Undesignate button on the stick. It also shows which track will be locked in STT if you command AACQ. This is the highest priority track.

 

With an L&S: It shows which track will become the next L&S if you step with the NWS/Undesignate button.

 

With an L&S and DT2: It shows the next highest priority track.

 

Essentially, is always shows the HAFU with rank 1, since when a contact is designated as the L&S or DT2, it is removed from the HAFU rankings and the next contact takes its rank.

 

It's still WIP and likely some stuff will change. There's also a bug where the L&S will change to the target marked with the ACQ cue upon entering TWS, even if an L&S exists already.

Edited November 7, 2020 by Harker

[markturner1960]

cool, thx