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lukos

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  • in reply to: Two Aircraft Design Ideas for CAS in Contested Airspace #2247656
    lukos
    Participant
    in reply to: Rise of the 6th Generation Fighter … #2247806
    lukos
    Participant

    You’ve done well to lay out some of the challenges for such a weapon to be effective. These are no doubt being solved as we speak. I’ve only come across the ABC for tactical fighters. From what i understand HELLADS is the offensive weapon being developed, but i do not think its goal is to fit it onto any tactical fighter…

    General Atomics have a video showing it being operated from an Avenger drone. Supposedly it ‘will’ weigh 750kg.

    Avenger
    http://www.ga-asi.com/products/aircraft/predator_c.php

    http://www.ga-asi.com/products/aircraft/pdf/Predator_C.pdf

    HELLADS
    http://www.ga-asi.com/products/lasers/hellads.php

    in reply to: USAF to retire A-10 fleet or the B-1B fleet? #2247813
    lukos
    Participant

    Precisely. High altitude SAM coverage in the country is limited as well as obsolete. The US military doesn’t face any substantial armoured threats in the foreseeable future save for North Korea. As a matter of fact only four countries currently field sizeable tank forces – US, Russia, China and India (the Europeans having massively downsized their armour). As for North Korea between the CBU-97 SFW and SDB employed from mid to high altitudes, they’re more than covered. As a matter of fact, the only aircraft can they have some hope of countering (with massed AAA) is the low and slow A-10.

    The A-10 has a venerable record, but tank busting isn’t high on anybody’s list of priorities. The B-1B may be a sub-optimal tool but will still provide strike options in a Pacific war, particularly a large scale one.

    Not entirely true. The A-10C is capable of flying well above the 10-15,000ft ceiling of MANPADS and deploying both the CBU-97 and CBU-105 WCMD as well as AGM-65D/H AGMs, GBU-12s/(49s?), JDAMs and APKWS II 70mm guided rockets and laser Zuni 127mm guided rockets – the latter being easily MBT-capable with a 40lb warhead and 10km range. Oddly enough, if you felt like a challenge you could outrange most AAA and MANPADS with the GAU-8.

    The only real issue if you can fly high without radar SAM threat is cloud cover (for non-SAR-equipped aircraft).

    in reply to: Rise of the 6th Generation Fighter … #2247954
    lukos
    Participant

    There is an obstacle in weight, volume, power generation, cooling, and then keep it all inside the already designed airframe,
    in what direction is the laser supposed to fire ? what angles ?

    It doesn’t necessarily have to have destructive power. C-130s are already flying with DIRCM. Here is an example.

    http://www.baesystems.com/article/BAES_028082/bae-systems-unveils-boldstroke-directable-infrared-countermeasures-system-integrated-aircraft-survivability-solution?_afrLoop=799251188922000&_afrWindowMode=0&_afrWindowId=null&baeSessionId=lJbVSrpPy5LCK3QslzfGD43YjTZp35xv1hrXZtpQ

    You mean POWER generation PLANS like the one that FAILED by not taking into ACCOUNT other systems that ALSO require POWER,
    small things like CRITICAL flight control systems ?
    The current generator on F-35 produce 160 kW, guessing the laser you want to power require 300 kW, for a meager 100 kW output, if lucky,
    the current consumption for flight critical etc systems are 140 kW, so 20 kW to spare, 280 kW to go,
    will you put the additional required generators on pylons ?
    how about the wasted 200 kW of heat, perhaps cooling systems on pylons too ?
    Yes, they should be used to saying Oops from their previous failed plans
    And truth to be told i think by the time this becomes operational on a fighter, the counter stealth technology gap is closed so they may as well use pylons for exchanged safety, relying on laser defense rather than L.O

    Sadly it’s worse than that. Very few high energy lasers are more than 10% efficient, so for a 100kW laser, you would likely need about 1MW. Weight-wise HELLADS is aimed at about 5kg/kW but that hasn’t been acheived yet. Presently systems of around 150kW are about the same footprint as a 32-cell naval VLS.

    in reply to: Passive sensor & L-band radar of USA ? #2248138
    lukos
    Participant

    The USN has been able to do that for a decade with ageis radars systems, the F35 will bring that to fighters. In fact the most awesome things the F35 will do is the stuff the pilot doesn’t know about has he flies his mission, the RAAF is really looking forward to that part of the F35 envelope.

    I think we might be talking about something slightly different. I think you’re talking about communicating radar data and multi-static receivers, I’m talking about using several radars miles apart to produce the equivalent of one radar with an antenna several miles wide. It’s not possible yet AFAIK.

    in reply to: F-35 News & Multimedia thread #2248368
    lukos
    Participant

    in reply to: USAF to retire A-10 fleet or the B-1B fleet? #2248404
    lukos
    Participant

    The A-10 is a perfect aircraft if North Korea ever tried to cross into South Korea. The damage the A-10 can take and still make it home is amazing. No way a F-16 can compete with that. The B-1B is part of the Trinity Nuclear Deterrent and seen as an important part of American national security.

    I have a way to save the USA military $30 BILLION dollars a year. Get rid of the Marine Corp. The Marine Corp is a redundant branch and the army, navy, and air force would be fine without it.

    That’s a little severe but I think you could sensibly limit CVNs and amphibious assault carriers to a maximum of 9 or 10 of each and logically the B-52 is the oldest airplane in service and, at 60, is probably nearing retirement age anyway. You also have the LRS-B coming along to fill the gap.

    in reply to: Passive sensor & L-band radar of USA ? #2248465
    lukos
    Participant

    What about when processing technology becomes powerful enough to link a dozen fighter radars several miles apart and create a virtual array, something that’s already been done outside of real-time with telescopes.

    in reply to: USAF to retire A-10 fleet or the B-1B fleet? #2248692
    lukos
    Participant

    Seen from a link on Facebook; http://www.airforcemag.com/DRArchive/Pages/2013/June%202013/June%2018%202013/A-10,-B-1-Vertical-Cuts-On-the-Table.aspx

    The USAF may have to retire an entire type of aircraft to fit within their sequestration budget for FY2014. Which would you axe, if you had to, the A-10 or the B-1B? I’d get rid of the B-52’s if it were up to me…

    The B-52 can carry the longer range AGM-86/129 cruise missiles whereas the B-1B can’t unless you remove the bulkhead between the first and second bomb bays or fit them externally which is prohibited by START.

    Every time this cost issue comes up I immediately think of the 11 carriers and plans for 13 amphibious assault carriers.

    Whilst seemingly the least logical answer for this, the B-2’s role is increasingly questionable. Why do you need a 170ft wide stealth bomber, when the capability exists to produce <2ft wide stealth cruise missiles with a range of >5,000km. When are you really going to fly one over an enemy to require the stealth? The only application I can think of is MOPing Iran’s nuclear facilities but it seems silly to base everything on one application. But maybe with the LRS-B planned, the B1-B is the logical choice. I can’t see the need for both. Keep the B-52 for extra stand-off ability and have a modernized stealth bomber force in the B-2 and LRS-B. Or remove the B-52 if the LRS-B can carry LR cruise missiles and have LRS-B, B-2 and B1-B.

    The problem with the A-10 is that there’s nothing planned to accurately replace it, just a multitude of job-sharing for other fighter aircraft.

    in reply to: Passive sensor & L-band radar of USA ? #2248694
    lukos
    Participant

    Radio wave is the same no matter what band, so why would L band be better for detecting so called stealth? :confused:

    Longer wavelengths suffer less attenuation with distance.

    http://www.radartutorial.eu/07.waves/wa04.en.html

    lukos
    Participant

    But it has got nothing to do with typhoon even Rafale would be greater threat than typhoon as it can cue it’s Meteor missile
    with spectra alone without turning on it’s aesa radar for stealth reason which [B]Typhoon cannot with DASS.

    SPECTRA will most likely be used to cue the radar into a focused narrow beam search on an area of interest as will the wingtip ECM/ESM pods of DASS (placed on the wingtips for triangulation). The radar has far greater range and far better precision than passive systems and this is where the term ‘sensor fusion’ comes from – you use a combination of sensors to achieve the required result. Furthermore, in narrow beam mode the radar has superior range and acuity, it’s a bit like looking for something small on the carpet (like a pin) when you know where it is compared to when you don’t know. Passive systems only really give direction from large ranges unless you use 2 aircraft far apart to triangulate. Using wing-tip pods gives you the best triangulation capability that can be attained with just one aircraft. DASS is setup to home in on radar and data transmissions, so it can in theory detect an aircraft even if their radar is off.

    http://eurofighter.airpower.at/sensorik-dass.htm

    lukos
    Participant

    It’s a sound strategy. A 2008 war game conducted by the U.S. Air Force-sponsored think tank RAND pitted F-22s against older Chinese Su-27-style fighters in a hypothetical air battle over Taiwan. After Chinese bombardment of American airfields, just six F-22s were available to fight 72 Chinese jets.

    Backed by support planes, the defending F-22s got in close and shot down 48 Su-27s, but the remaining Chinese planes managed to power through and destroy six tankers, two AWACS, four P-3 patrol planes and two Global Hawk spy drones, effectively crippling the U.S. force. With no tankers to refuel them, the F-22s crashed for lack of gas despite surviving the missile exchanges.

    Interesting that missile Pk was set to 100% in that simulation.

    If OTOH a fighter can pull 8g at 30.000 ft

    ….into a steep dive and not for long with a drag equal to 3-4 times gross maximum engine thrust. In fact an F-18 can only manage 7.5g instantaneous at 15,000ft, with an F-16 at 7.0g.

    See page 9:
    http://www.f-16.net/f-16_forum_download-id-14791.html

    More food for thought (F-5E vs F-20):

    http://imageshack.us/a/img818/3648/lywb.th.jpg

    http://imageshack.us/a/img832/7458/8zqv.th.jpg

    F-4E STR
    http://forums.airforce.ru/attachments/holodnaya-voina/7579d1183832154-f-4e-sustained-turn2.gif/

Viewing 12 posts - 1,741 through 1,752 (of 1,752 total)