schroedi Posted September 21, 2020 Posted September 21, 2020 Maybe someone knows this, how it is in reality. A GBU-38 has a longer range than a GBU-12 because the 38 has proportional control surfaces while the 12 has "digital" one (either steer or straight). The GBU-54 is a 38 with a laser seeker, so does it have the same range as the 38 when in laser mode? Or in other words, is the range in GPS/INS mode the same as in laser mode?
Cato Posted September 21, 2020 Posted September 21, 2020 Looks like Wags dropped that first GBU-54 from 4.2 miles out on the video and he said he was well within range. Sent from my SM-N950U using Tapatalk [sIGPIC][/sIGPIC]
Frederf Posted September 21, 2020 Posted September 21, 2020 LJDAM has more range more than just because of control proportionality. Big difference is LJDAM is a JDAM so it "flies" to the target in a non-ballistic path. Laser JDAM is just a JDAM with a laser seeker that it can blend in that extra source of information so it should have similar range and indistinguishable when employed without laser. Another feature of laser info is that it updates the INS target. A brief mid-course laser update refines the target position so any lasing is an improvement even if the laser ceases before impact. Paveway II on the other hand goes completely stupid if after initial lasing the laser stops.
schroedi Posted September 21, 2020 Author Posted September 21, 2020 How do the Raytheon GBU-4x series behave? They are also GPS/INS + Laser guided. As I know they are based on the GBU-1x series, so do they have propotional steering surfaces (like GBU-2x series), or non-proportional like the GBU-1x series?
Swift. Posted September 21, 2020 Posted September 21, 2020 The way I understand the 54 is that it doesn't 'guide' to the laser, rather it spots the laser and updates its target based on that. 476th Discord | 476th Website | Swift Youtube Ryzen 5800x, RTX 4070ti, 64GB, Quest 2
Frederf Posted September 21, 2020 Posted September 21, 2020 How do the Raytheon GBU-4x series behave? They are also GPS/INS + Laser guided. As I know they are based on the GBU-1x series, so do they have propotional steering surfaces (like GBU-2x series), or non-proportional like the GBU-1x series? EGBU/GBU-4X definitely have proportional steering at least MAU-210F and newer control group. As far as comparing EGBU/PIV INS trajectory vs JDAM or LJDAM... it's a good question. One assumes they're getting the most aerodynamically out of each and PII has a bit more "wings" to it which might glide farther. I bet JDAM is the only one that does supersonic decently.
QuiGon Posted September 22, 2020 Posted September 22, 2020 LJDAM has more range more than just because of control proportionality. Big difference is LJDAM is a JDAM so it "flies" to the target in a non-ballistic path. The GBU-38 that the OP used for comparison is a JDAM too... Intel i7-12700K @ 8x5GHz+4x3.8GHz + 32 GB DDR5 RAM + Nvidia Geforce RTX 2080 (8 GB VRAM) + M.2 SSD + Windows 10 64Bit DCS Panavia Tornado (IDS) really needs to be a thing!
LastRifleRound Posted September 22, 2020 Posted September 22, 2020 The GBU-38 that the OP used for comparison is a JDAM too... Right, Fred was comparing to the GBU-12, not the GBU-38, as that is the comparison OP was making.
QuiGon Posted September 22, 2020 Posted September 22, 2020 Right, Fred was comparing to the GBU-12, not the GBU-38, as that is the comparison OP was making. I see, thanks :thumbup: Intel i7-12700K @ 8x5GHz+4x3.8GHz + 32 GB DDR5 RAM + Nvidia Geforce RTX 2080 (8 GB VRAM) + M.2 SSD + Windows 10 64Bit DCS Panavia Tornado (IDS) really needs to be a thing!
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