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    Development of Ekranoplans

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    Tsavo Lion

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    Re: Development of Ekranoplans

    Post  Tsavo Lion on Thu Aug 02, 2018 7:05 pm

    Why Russia again needs military ekranoplans
    https://vz.ru/society/2018/8/1/934910.print.html

    They can also perform some missions now done by tiltrotors.

    hoom

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    Re: Development of Ekranoplans

    Post  hoom on Fri Aug 03, 2018 4:07 am

    Charly015 has pics of a model with missiles http://charly015.blogspot.com/2018/08/ekranoplanos-de-combate-partir-de-2020.html



    Apparently from IMDS 2013 but an interesting concept.
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    Tsavo Lion

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    Re: Development of Ekranoplans

    Post  Tsavo Lion on Tue Aug 28, 2018 4:11 am

    Rescue ekranoplan "Chaika" with a mass of about 50 T
    http://www.ng.ru/news/626083.html?print=Y

    I'm waiting for its prototype pictures!

    https://tvzvezda.ru/news/opk/content/201707141733-acko.htm

    https://ria.ru/arms/20170710/1498179442.html

    https://ria.ru/defense_safety/20170710/1498181850.html
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    dino00

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    Re: Development of Ekranoplans

    Post  dino00 on Wed Sep 26, 2018 11:26 am

    Shock Wave-craft: horror flying above the crests of waves

    Russia has everything necessary for the revival of a unique vehicle

    Alexei Leonkov, military expert of the magazine "Arsenal of the Fatherland"

    https://zvezdaweekly.ru/news/t/2018917911-CoYQH.html
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    GunshipDemocracy

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    Re: Development of Ekranoplans

    Post  GunshipDemocracy on Thu Sep 27, 2018 4:53 am





    They should reviwe this one russia russia russia Italina design Twisted Evil Twisted Evil Twisted Evil





    https://en.wikipedia.org/wiki/Bartini_Beriev_VVA-14












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    GarryB

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    Re: Development of Ekranoplans

    Post  GarryB on Thu Sep 27, 2018 7:47 am

    To be honest I always thought that Bartini design was brilliant... I mean just the aircushion undercarriage so it can land on snow or ice or water or land and anything in between... though lack of wheels and brakes would make the landing and takeoff runs quite long but who cares?

    Big high bypass cold air turbofans blowing high volumes of air under its wings should have made it rather better too.

    hoom

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    Re: Development of Ekranoplans

    Post  hoom on Thu Sep 27, 2018 8:27 am

    It did have undercarriage though
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    GunshipDemocracy

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    Re: Development of Ekranoplans

    Post  GunshipDemocracy on Thu Sep 27, 2018 12:27 pm

    GarryB wrote:To be honest I always thought that Bartini design was brilliant... I mean just the aircushion undercarriage so it can land on snow or ice or water or land and anything in between... though lack of wheels and brakes would make the landing and takeoff runs quite long but who cares?

    Big high bypass cold air turbofans blowing high volumes of air under its wings should have made it rather better too.


    It supposed to fly up to 8000m but I am not sure how much ti would be complicating construction. But as ekranoplan cold be god weapon for ASW. topedo,mines cannot harm it Twisted Evil Twisted Evil Twisted Evil flies faster then chopper and has way longer range...
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    GarryB

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    Re: Development of Ekranoplans

    Post  GarryB on Fri Sep 28, 2018 7:05 am

    It did have undercarriage though

    It did, but if you look at the photo of it in parts on the ground where the large main floats are the underneath opens down and acts like a skirt for a hovercraft... so it can operate from ice or snow and water... for taking off on water it greatly reduces friction to hover on a cushion of air first...

    The final aircraft was supposed to be vertical take off... they were developing it in steps...

    They had a version with floats to land like a normal sea plane but found at speeds of more than 35km/h it nosedived into the water... obviously not good... as the floats themselves are basically balloons and forcing them underwater tended to burst them... which obviously makes the nose diving worse...

    If you look at these three images you can see the VVA-14 first on the ground showing wheeled undercarriage, and then on the water with floats inflated and then in the air with floats and gear retracted...









    This is the VVA-14PS, which is only a drawing but it was the end goal... a VTOL VVA-14...



    And this was another prototype sitting on the water with lifting cushion not inflated.



    And here is the same prototype in hovercraft mode:



    Which of course means it can land and takeoff at any speed due to low friction, and of course it can land on any relatively flat surface, because a hovercraft mode means its weight is spread over a huge area so it can operate from water... deep mud... snow, or anything that is relatively flat...


    Last edited by GarryB on Fri Sep 28, 2018 7:18 am; edited 1 time in total
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    GarryB

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    Re: Development of Ekranoplans

    Post  GarryB on Fri Sep 28, 2018 7:17 am

    To quote from the book about Bartini:

    In 1976 14М1П transferred to testing showing after output on dynamic pillow camera much lifted nose, maintaining movement. Trouble started when for the first time dramatically reduced the engine speed boost. Machine with this far down in the water, and it happened the water was poured DWI motors. Revealed low reliability system control.

    However, test confirmed the opportunity use dynamic air pillows for take-off and landing aircraft with excited water surface.

    When tests 14М1П was installed what effect dynamic air podesk manifested at altitudes of 10-12 meters at medium]i aerodynamic the wing chord of 10.75 meter, and the spacecraft altitude alignment 8 meters air the pillow was already GAK dense and sustainable, the pilot Yu Kupriyanov repeatedly asked guide allow throw the handle management the machine of the village itself.

    This feature aerodynamic scheme 14М1П would the wig VTOL-2500, medium aerodynamic wing chord which reached 250 meters fly using effect location the land on altitudes of 150-200 meters. On such heights you safe to fly over storm sea and easily to get around occurred on the way obstacles including ships.

    So it was intended as a Wing In Ground effect aircraft, but could climb to 250m which meant it could fly over shipping or storm seas (WIG aircraft are not quick turners so climbing is often the best way to avoid obstacles...)

    They called the hovercraft skirt a Dynamic Pillow...

    For much more interesting stuff... can I suggest you open a Yandex translation page... ie :

    https://translate.yandex.com/translate

    And click on the site option at the top and then paste the link below into the dialog box and click the translate button:

    http://www.e-reading.club/bookreader.php/1034335/Yakubovich_-_Samolety_R._L._Bartini.html

    It is rather interesting...
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    GunshipDemocracy

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    Re: Development of Ekranoplans

    Post  GunshipDemocracy on Sat Sep 29, 2018 2:47 am

    GarryB wrote:To quote from the book about Bartini:

    +++

    It is rather interesting...

    Yup, this guy really knew stuff. And his ekranoplan had truly Italian design ;-)

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