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    Next Generation ВΩⅿ㍴

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    Almael
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    Next Generation ВΩⅿ㍴

    Post by Almael on 3/9/2014, 10:02 pm

    It's been a while since talk started about the new ВΩⅿ㍴ but since then things kind of died. This years it's gonna be put to the test. Some patents have been floating around since 2009 and yet no bloody artist on the net took it up yet. Note even some kids at devianart. So I thought it was about time I looked into the design, too. Very Happy

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    Spoiler:

    All images are to scale!

    From the get go Northrop's idea was a modular design. Well, it's a bad idea for several reasons:

    • modularity as in flexibility is best meant for some sizable things not whole ship-sections
    • modularity for ship-section is best for construction and having many designs but
      is not meant to be mission flexible; changes takes too long anyway (months)
    • modularity requires extra space to fit things as well as taking future consideration into account, so efficiency is bad
    • for aircraft where every pound counts this is very bad


    As you can see here, Northrop intends to have a module in a module. This means more space needed as well as more (2) thick bulkheads. Their reason is to keep the back the same which contains all the expansive electronics. It's like keeping the spine while exchanging the content of the belly and the limps.


    my own illustration of the same with more realistic interpretation; I kept the same single bulk to connect two sides, hence halving weight.

    Anyway, based on the specification and requirement it can be build with just two engines. That's why they displayed such a model sometime before the program started.



    I had my own idea before, too, and they happen to fall in line. In any case performance wise it's a bit better than the B2.
    max Weight: ~140000 lb fuel 70-80000 lb payload 30000 lb

    In order to fill in for tankers and transporters, hence, more versatility, Northrop decided on the idea of modularity and four engines.  From a simple point of view there's no gain for the ВΩⅿ㍴ whether it has 2 or 4 engines because the aircraft would be double as large and requires double the fuel. But there's a trick to it!
    Having so much extra engine power the engine can be run at low power, hence, not as much fuel is required.



    The 4-engine version is roughly 70% larger or about 60% more fuel;
    performance wise it's wothin possibility to go for Mach 1.2.
    IMHO Mach 1.2 is a target feature for a dash.



    The canards are in two possible sizes I left them for misinformation purposes Laughing
    Tanker and transporter version are essentially the same with a minor difference in the back (w/ or w/o door). It can carry a SpecOps team of 12, 3 Storm Search and Rescue Tactical Vehicle at max weight, and more extra personnel for a mission.
    /hide

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    Spoiler:

    Boeing/Lockheed are competing, too, but I doubt them.


    the ВΩⅿ㍴ is about the same size as N's


    but the tanker is way larger

    Just as with before they probably will have a lesser design but may win politically.
    But then again there are two ВΩⅿ㍴ programs. This one is just the interim medium ВΩⅿ㍴. The real heavy ВΩⅿ㍴ program is still awaiting. If it does get underway. then N has a chance to win the small one while B/L get the big one.

    Aerodynamic wise both team will end up with superficially the same design. The difference lie in the details. Boeing doesn't have a modular design but probably will have to in order to compete. I still think N has superior skillz.

    The biggest disadvantage/advantage is that the wing design is huge because the thickness has to fit in humans. If they want to compete in size they will have to go for a hybrid like N does, too. So they definitely will end up being quite similar.
    /hide
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    Almael
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    Re: Next Generation ВΩⅿ㍴

    Post by Almael on 1/8/2015, 4:56 pm

    In relation to this there's been some talk about the
    Spoiler:
    Next Generation Penetrator (NGP).
    It's supposed to be some sort of smaller penetrator with rocket assist. An age old dream since WWII or so.

    It will have similar or better penetration power as the
    Spoiler:
    30000 lbs Massive Ordnance Penetrator.
    My guess is it's the size of a 2000 lbs MK84 with some extra length for the rocket motor such that two will fit in the new aircraft.
    That's undoubtedly the requirement.

    A simple calculation reveals some interesting limitations. Basically, it's near impossible imho.
    Just based on equal kinetic energy necessary for penetration.
    30000 lbs dropped from 55000 ft  KE = 2239874920.8 J
    or terminal velocity of Mach 6.67 =2221.2 m/s for the NGP that's like a super cannon shot
    And the time is roughly limited to 7 s for acceleration.

    It's difficult to imagine a motor that fits the bill. It has to be similar to the one for the X-43, only shorter or smaller since it doesn't need to transport it over extra altitude and distance.


    It will be hard to fit.

    Now that makes me curious if anyone can pull this off or it's gonna be an expansive dead project.
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    Almael
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    Re: Next Generation ВΩⅿ㍴

    Post by Almael on 2/27/2016, 7:51 am

    Update:

    Northrop Grumman is awarded the contract for engineering and manufacturing development and early production for the Long Range Strike Bomber
    http://www.defense.gov/News-Article-View/Article/626137/air-force-awards-contract-for-long-range-strike-bomber
    Boeing is protesting, of course.
    http://breakingdefense.com/2015/12/boeings-bomber-protest-is-fundamentally-flawed/
    There's rumors NG may end up being bought up by Boeing.

    The AF wants a bomb truck/missileer as discussed long ago...
    http://arstechnica.com/information-technology/2016/02/dod-aims-to-back-up-underarmed-fighters-with-networked-arsenal-planes/
    http://cimsec.org/lrs-b-bomber-putting-air-air-sea-battle/8953

    The AF reveals first drawing and designation for the B-21

    http://www.defensenews.com/story/breaking-news/2016/02/26/b-21-bomber-air-force-lrsb/80976160/
    Basically Boeing's original NGB design and or sensor stealth drone.

    Or maybe a derivative of NG's RQ-180 drone


    The UK is interested but you can bet won't get any.
    http://www.thinkdefence.co.uk/2015/11/why-the-us-air-forces-new-long-range-strike-bomber-is-potentially-important-for-the-uk/

    Specifications/requirements reiterated from the NGB
    http://www.defenseone.com/technology/2015/09/air-force-bomber-missions-bombs/120881/
    http://www.csbaonline.org/wp-content/uploads/2010/09/2010.09.14-Sustaining-Americas-Strategic-Advantage-in-Long-Range-Strike.pdf

    And we will see a spending spike in 2020 and other troubles.
    http://csis.org/files/publication/160126_Harrison_DefenseModernization_Web.pdf

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    Re: Next Generation ВΩⅿ㍴

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