RE: Thread for DB3000 database problems, updates or issues
Posted: Sun Jun 07, 2015 7:50 pm
Added to our list. Thanks
Mike
Mike
What's your Strategy?
https://forums.matrixgames.com:443/

When flying at altidudes of around 15km (49212ft), the "ISIS"-system (ISIS-A) is capable of successfully intercepting, locating and recording all radio signals within a 400km (215 NM) radius. The signals are then send to the ground station (ISIS-G).
Thanks for the bumpIt has not been forgotten, it just ended up a little further down on the list as it requires a fair bit of work
one more thing, there where 20 RF-35XD's, 20 F-35XD's and 11 TF-35XD ordered from Saab, all delivered, along with some later deliveries of out-of-service J-35D's for spare parts.ORIGINAL: emsoy
Thanks Liare,
I understand Danish so feel free to post [8D]
Mods in DB v438:
- Updated radar
- My sources say the Bullpup was phased out in 1982, when most other European air forces stopped using it too. Hence the cut-off date in the database.
- Added strike loadouts to recon version.
- Added: "TF-35XD Draken -- Denmark (Air Force), 72-92, 6x"
- Willemoes Harpoon loadout: Scenario designer has the ability to change the launchers to wartime loadout if needed, in the scenario editor [8D]
- Updated forts.
After 5 posts or so you should be able to post links. Would be great to see what you have been able to dig up of info on the missing subs and MTBs.
Thanks again!
From the Mega-FAQ talking about that issue (it's present on a lot more than just AESAs):In game, the AN/APG-81 and AN/APG-77 have search areas of about 30 degrees. However, in a few online apocryphal sources, they're cited as having FOVs of 120 degrees (+-60), an idea that is backed up by this video, when measured. Is there a reason why these two radars have their current narrow FOV?
Why is the AN/AWG-9 radar on the F-14 Tomcat limited to a 40 deg search arc?
Although the AN/AWG-9 has a +/- 65 degrees frontal scan sector, the aircraft doesn’t search arcs larger than 40 deg / 2 bars or 20 deg / 4 bars at a time. This is so that tracks can be updated every 2 seconds. A full 130 deg / 8 bar sweep may take as much as 30 seconds and has limited tactical use. As such, it has a 40 degree frontal arc in Command.
Looking beyond Command v1.04, the plan is to allow the AI and player to turn the search arc (scan cone) sideways, so the aircraft can scan 65-25 deg off-angle. The aircraft can then launch medium-range missiles, turn 60-ish degrees to reduce the closure rate, and still guide missiles to the target. Getting this to work properly for all aircraft/weapon and tactical combinations is a bit of a pain so will take time to implement and test. However the database has already been updated supports this so the groundwork has already been done. The developer won’t give any promises on ETA, though.
From the Mega-FAQ talking about that issue (it's present on a lot more than just AESAs):
Yeah, I'd forgotten how quickly AESAs scan. I looked up unclass docs on the APG-79 and that indicated 2800 beams per second, and if you assume a 2.5° beam, it's more than enough coverage.The issue with that, though, is that the Gripen NG's AESA has the full 120 degree search volume. Furthermore, the video I linked (if you believe it) shows AN/APG-81 searching a 120 degree volume with a 90% detection rate (19/21) in 3 seconds (and maintaining track on all of those targets), which is about as fast as the F-14's radar can search a 40 degree volume. Reasonably, modern AESAs can search much faster than the F-14's first generation PESA could, and the Gripen's radar can even be angled like you mention to expand beyond the 120 degree search volume.
AESAs have a fundamental (so far anyway) limitation; the more the beam goes off-boresight, the less (dramatically less) the antenna gain becomes. At the edges of the search arc the practical detection range is less than half of the boresight detection range.ORIGINAL: ExNusquam
Yeah, I'd forgotten how quickly AESAs scan. I looked up unclass docs on the APG-79 and that indicated 2800 beams per second, and if you assume a 2.5° beam, it's more than enough coverage.The issue with that, though, is that the Gripen NG's AESA has the full 120 degree search volume. Furthermore, the video I linked (if you believe it) shows AN/APG-81 searching a 120 degree volume with a 90% detection rate (19/21) in 3 seconds (and maintaining track on all of those targets), which is about as fast as the F-14's radar can search a 40 degree volume. Reasonably, modern AESAs can search much faster than the F-14's first generation PESA could, and the Gripen's radar can even be angled like you mention to expand beyond the 120 degree search volume.
You're completely right, and the other AESAs should probably have their search areas expanded.
Both the EF-Typhoon and Su-35 (and the B-1B before them) have adopted hybrid or "swashplate" phased arrays (combination of mechanical-swivel backplane and phased array front-end), to get around this limitation. In most aircraft applications (e.g. B-2, F-22, F-35, F-18E, MiG-31, MiG-35, T-50, Rafale etc.) the designers place fixed arrays and accept the penalty of limited practical scan arcs.
ORIGINAL: emsoy
Hello Erik,
I belive these loadouts are already in the database along with AIM-9X? Please download the 1.08 RC and rebuild the scenario with the latest database, and the aircraft should appear in the list.
Thanks!
ORIGINAL: emsoy
Hello Erik,
I belive these loadouts are already in the database along with AIM-9X? Please download the 1.08 RC and rebuild the scenario with the latest database, and the aircraft should appear in the list.
Thanks!