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  • in reply to: Sustained high speed flight #2230908
    mig-31bm
    Participant

    F-106 out-ranges MiG-31 by a wide margin, in spite of having a fuel fraction of 0.27 compared to MiG-31 0.40,
    i suggest in your novel a rebuilt F-106 with modern composites, a modern engine, and higher fuel fraction,
    or alternatively use the internal missile bay as an extra fuel tank if its used as a taxi.
    To top it off it is also well shaped for a very low RCS, especially with modern material and a new canopy,
    so it may well make a re-appearance

    wasn’t the f106 more or less the same as f-4?
    iI know it have very long ferry range but can’t find any info about it’s supersonic range

    in reply to: Stealth fighter effectiveness in SEAD , DEAD #2230911
    mig-31bm
    Participant

    An object’s RCS is dependent on the wavelength of the radar evaluating the object.

    The wavelength of say, an SPY-1D (3-3.5 GHz), will not be the same as an APG-77 (8-11 GHz).

    Therefore, you are comparing apples to oranges and producing brussel sprouts!*

    In reality, the RCS of the F-35 (or F-22/PAK-FA/J-20) will be much higher when faced with an SPY-1D than when faced with an APG-77.

    :

    actually you are right
    but wasn’t the F-35 was designed to defeat s-300 series ( big bird radar) which use the same frequency as SPY-1, it’s RCS can’t be too big at that frequency , bigger than 0.0001 m2 sure, but maybe not sth like 100 m2, not to mention many stealth ASM are still in development which mean low band radar doesn’t negate stealth completely (render the RAM ineffective but shaping still working)
    any way i remember there a formula to translate aircraft RCS in x-band to RCS in lower band

    in reply to: Stealth fighter effectiveness in SEAD , DEAD #2230943
    mig-31bm
    Participant

    Yep SPEAR 3 is internal from the outset and worries Raytheon so much that it will compete for the UK requirement with a version of SDB (internal also obviously).

    SPEAR 3 is so much better than SDB II,due to the engine it much faster, less affected by weather, also can be launched from below radar horizon ( it have an engine so high altitude drop will not be very necessary )

    in reply to: Stealth fighter effectiveness in SEAD , DEAD #2230946
    mig-31bm
    Participant

    Perhaps they can launch a JASSM and remote control it from an F-35. The JASSM has a terminal seeker for terminal guidance and a dual way datalink.
    http://en.wikipedia.org/wiki/AGM-158_JASSM

    The JASSM also has a new seeker for the LRASM:

    I think using JSM is a better option, smaller, already have iir seeker +2 ways data link
    the think I hate about IIR AtG missile is that there already many kind of coating to reduce Ir significantly ex :intermat so they are very unlikely to be useful
    anyway aim-9x can attack ground target and block 3 promised max range of about 55 km again air target, so range again ground target probably alot higher

    in reply to: Jamming an IRST with a laser #2230952
    mig-31bm
    Participant

    in theory you and jam IRST if you have strong enough laser or IR light, however no aircraft carry anything like that, apart from YAL-1 but then it could just destroy the enemy fighter instead of try to jam the IRST
    anyway IRST is not that useful, the 100-200 km figure you saw around Internet is only detection range, and only if the IRST sensor know where to look at, focus at a small volume (kind of like optical zoom of camera)
    the targeting range of IRST is a lot shorter around 40-50 km, and it only provide range not speed, heading or aspect angle of target
    last f-35 have DIRCM but only for short range + EOTS is actually it’s IRST system

    in reply to: Sustained high speed flight #2230954
    mig-31bm
    Participant

    high speed + long distance => mig-31

    in reply to: Stealth fighter effectiveness in SEAD , DEAD #2231087
    mig-31bm
    Participant

    I find that interesting. For sure the nbr are probably off but the scale of it, the order is interesting.

    Note that comparing Surface to Air and A2A proved inadequate. Your S400 having lower performance that an IRBIS or a ZASLON.

    probably due to the fact that it an older version of S-400 radar vs newest version of fighter radar may be ? , i think , or could be different radar mode ? , like say S-400 radar may have shorter range but wider FOV and much harder to jam ? , or probably ground radar affected more by clutter so they have to reduce gain ?
    any way there are couple more
    http://www.ausairpower.net/XIMG/Rus-S-band-Radar-Params-2008.png
    http://www.ausairpower.net/APA-Acquisition-GCI.html

    it seem that the SPY-1D just significantly stronger than any other radar system (except AN/TPY-2 or SBX-1 ) i remember reading some where that those 2 can see golf ball from 1000 km

    in reply to: Stealth fighter effectiveness in SEAD , DEAD #2231097
    mig-31bm
    Participant

    Too few radars in the above post. Add at least a dozen more, with pictures and exact golf ball detection ranges and then we can all join in. Golf ball also has to be specified, is it the made in america Bridgestone or the tour preferred Titelist.

    i know that sarcasm but it not really easy to find public info about SAM radar anyway , alot easier to find info of fighter radar

    in reply to: F-18 stealth weapons pod ( EWP ) #2231098
    mig-31bm
    Participant

    Does it matter?

    could be if in future USAF want to use some sort of ramjet AAM , or they may even buying Meteor like they bought AGM-119 Penguin

    in reply to: F-18 stealth weapons pod ( EWP ) #2231103
    mig-31bm
    Participant

    BTW does meteor fit in f-22 weapon bay

    in reply to: How Iron curtain , AMAP-ADS work #2231153
    mig-31bm
    Participant

    I’ve seen something like this somewhere a while back. Ah here we are:

    i dont really think they are the same , this one cant protect again KE round

    in reply to: F-18 stealth weapons pod ( EWP ) #2231159
    mig-31bm
    Participant

    Mig-31bm,

    The first pic is a mockup. The missile and the SDBs are not at the right scale. The second pic may be more accurate it is hard to tell.

    On the third pic note that the AMRAAM has long fins, it’s a 120A/B. I didn’t even know the F-35 could carry it. The 120C has smaller fins.

    It is hard to tell if 1 meteor and 2 AMRAAMs would fit. They don’t just have to fit, they have to have enough space between them and be ejectable.

    The configuration of 1 meteor on the a/a station and 2 AMRAAMs on the a/g station might not be the only possibility. ( it might work I am not sure.)

    If you look carefully at the meteor, you can see that the intake is getting narrower towards the end. That would mean that possibly the AMRAAM could be carry next to it in a staggered position the same way the AMRAAMs are carried. The AMRAAM’s wing would be in front of the meteor’s intake. So you wouldn’t waste much space vs 2 AMRAAMs, maybe 1” or so.

    The meteor would be carried on the exterior position of the bay at the rear. An AMRAAM would be carried next to it in a staggered position ( the 2 on the double launcher ). And the third AMRAAM on the a/a station.

    I admit it is not sure it would work.

    actually they can carry the Meteor on the AA station now ( clipped fin ) but iam not sure if one meteor could be carry next to aim-120 or not
    or could 6 meteor be carried ( very unlikely )
    http://www.sldinfo.com/wp-content/uploads/2013/03/meteor-f-35-1316535616.jpg
    http://upload.wikimedia.org/wikipedia/commons/5/5c/F-35_weapons_bay.jpeg
    size :
    aim-120 -> Length 12 feet (3.7 m) , Diameter 7 inches (180 mm)
    Meteor -> Length 12 feet ( 3.65 m ) , Diameter 7 inches (178 mm )
    so actually the Meteor actually have smaller missiles body ( tube ) but we dont know how big is it’s intake and fin
    btw the external pylon doesnt look stealthy at all :p
    http://i.imgur.com/608aWmg.jpg

    in reply to: F-18 stealth weapons pod ( EWP ) #2231207
    mig-31bm
    Participant

    The F-35 is stealthy so 2 missiles is likely to be enough. If you want more you can configure more F-35s in escort cofiguration with 6 AAMs.

    A combination of 2 meteors and 4 AMRAAMs is likely to fit and it would already be quite good. The F-35s can use their meteors for their first salvoe, then they have a significant advantage to continue the fight with their AMRAAMs.

    And in fact 4 meteors with smaller control surfaces and 2 AMRAAMs might even be possible, it is hard to say, but the bay is quite wide because of the 2000lbs JDAM requirement.

    And I doubt typhoons would carry a lot of meteors because they are very expensive. A mix of meteors and AMRAAMs is more likely operationnaly.

    A ramjet missile could be designed with the intake below the missile instead of 2 intakes on the side. That would allow more missiles to be carried side by side. I don’t remember where but I’ve already seen a design of AAM like that.

    It was one of the FMRAAM designs I think.

    not sure if a combination of 2 meteors and 4 AMRAAMs would work or not , will the meteor be too big ? how much bigger the clipped fin Meteor compared to aim-120
    http://www.janes.com/images/assets/213/34213/p1563045.jpg
    the only official pic we have about the 6 aim-120 plan is this one
    http://www.f-16.net/forum/download/file.php?id=17513&mode=view
    http://www.f-16.net/forum/viewtopic.php?t=23938
    but that will be in far future
    in near future it will be like this
    http://pds20.egloos.com/pds/201106/29/24/f0082824_4e0ac193c6ff2.jpg
    that make me wonder , why didnt they design the rail on the outer weapon bay door as well , i mean they can do that to the inner bay door right
    http://31.media.tumblr.com/919bc6d0ffbec3f415a20c959b1b8ce0/tumblr_n0bznqiig31skaxu8o1_1280.jpg

    in reply to: How Iron curtain , AMAP-ADS work #2231276
    mig-31bm
    Participant

    You need compression to detonate. Most ordnance will not get compression if there is a plasma hole burnt through it.

    but they will have heat also wasn’t all of the intercepted rpg explose in the video

    in reply to: F-18 stealth weapons pod ( EWP ) #2231316
    mig-31bm
    Participant

    No. NGM and JDRADM were USAF projects to replace the Aim-120. The T-3 is/was a darpa program to develop and test capabilities for next generation missile. Key attributes were faster better data links, Net centric improvements, Air breathing propulsion and the ability to rapidly switch between air to air and air to ground targets. It concluded as planned with 2 teams (Boeing and Raytheon) handing over their weapons to DARPA that evaluated them and passed that information along to the USAF. Unless specifically stated DARPA programs usually do not have an acquisition goals in mind but technology validation before passing the mature capability onto the services that may then choose to launch full fledged programs. An Aim-120 replacement will happen in the future, but the numbers alone (Acquisition) make it a very large program so expect some activity in terms of a full fledged program post sequester when there is a little more breathing room. In the meanwhile proper investments have been made both by the DOD (through DARPA and other contract awards) and the Industry team (there was quite a bit of activity a few years ago before the OEM’s decided not to speak on the matter) to prepare and validate the technology so that its smooth sailing once a formal program is launched.

    http://www.darpa.mil/Our_Work/TTO/Programs/Triple_Target_Terminator_(T3).aspx

    And what I am saying is that the folks that will be using this thing don’t agree with that notion.

    1- Jdradm was also designed to be a next generation weapons that can switch between air and ground target replace agm-88 and aim-120, exactly same as the T-3 , BTW I really doubt that T-3 is a Ramjet missiles, it doesn’t seem to have an intake
    2- I know that the f-35 was designed to carry 2000 pounds JDAM because USAF want to
    but personally I think that a wrong move, may be due to the fact that by the time f-35 was designed there wasn’t many SAM system that can easily shot down PGM, SDB program is also not very mature at that time, and also the Jdradm wasn’t cancelled by that time and it was promised to give f-35 ability to carry 6 long range, high speed AAM and AGM at the same time

Viewing 15 posts - 1,546 through 1,560 (of 1,759 total)