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74 posters

    3M22 Zircon Hypersonic Cruise Missile

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    Arrow


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    Post  Arrow Sun May 05, 2024 7:46 pm

    "Boosted air-breathing engines
    A method for boosting supersonic and hypersonic air-breathing engines by supplying water to their inlet is considered. The method makes it possible to expand the range of application of air-breathing engines with subsonic fuel combustion in terms of flight speed up to eight Mach numbers and flight altitude up to 45 km. At a flight speed of more than three to four Mach numbers, the stagnation temperature of the air becomes higher than the critical temperature for water, which makes its existence impossible when supplied to the engine inlet. The steam formed during the evaporation of water is the working fluid of the internal thermodynamic cycle of an air-breathing engine, which determines the physical essence of the method under consideration. Three options for hyperboosted air-breathing engines are proposed: a hyperboosted turbojet engine, a hyperboosted ramjet engine and a hyperboosted turboejector engine. The characteristics of hyperboosted engines are given. Their advantages over engines that do not have hyperafterburning are noted. The proposed method is of interest for use in aviation and rocket and space technology, in particular, in the creation of aviation rocket and space systems. It is shown that the use of hyperafterburner in a turboejector engine makes it possible to increase the flight speed of the booster aircraft to Mach seven, and the flight altitude to 40 km, which opens up new prospects for space exploration"

    https://cyberleninka.ru/article/n/giperforsirovannye-vozdushno-reaktivnye-dvigateli

    It is possible that Cirkon has a developed ramjet engine? scratch

    TMA1 likes this post

    TMA1
    TMA1


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    Post  TMA1 Sun May 05, 2024 10:33 pm

    With more documents coming out you are starting to see the scope of hypersonic studies from all sorts of institutions. We did the same and after the cold war even worked with a couple programs. Yeah water augmented turbojet and ramjet propulsion has been studied for awhile I think. Same with the different forms of pulsed and stirred detonation engines, exotic fuel additives, etc...

    Where is this research paper from? What institutions are connected to it?
    GarryB
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    Post  GarryB Mon May 06, 2024 12:28 am

    It is possible that Cirkon has a developed ramjet engine?

    No.

    Mach 4-5 is the limit of ramjets... do you think water injected inlets would allow a turboprop aircraft to go supersonic to mach 3?

    Water is used to boost the engine performance of the B-52s on takeoff... at rather higher speeds alcohol is used... which is why the MiG-25 had the nickname restaurant.

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    Big_Gazza
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    Post  Big_Gazza Mon May 06, 2024 2:31 am

    More to the point, what will best improve the overall performance of the weapon - adding extra fuel or a similar mass of water? My money is on the former.

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    Isos
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    Post  Isos Mon May 06, 2024 8:41 am

    No need for all the flight. That could be used when being shot at by AD or for the final stage of the flight.
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    mnztr


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    Post  mnztr Mon May 20, 2024 1:37 am

    Big_Gazza wrote:More to the point, what will best improve the overall performance of the weapon - adding extra fuel or a similar mass of water? My money is on the former.

    Not 100% sure, it depends on how hot the engines are running. If you inject water you get that wonderful combo of cooling the engine plus achieving the liquid/gas state change of the water, so you can capture a lot of energy that would be somewhat wasted in the exhaust temp to generate thrust.. BUT you also have to haul that water, which is heavy.

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