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Let's Do Some Rocketry !?

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  • topspeed
    replied
    NASA on SAP ( Solar Electric Propulsion ); https://www.youtube.com/watch?v=iCPFKBo7rco

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  • topspeed
    replied
    I have no idea why Michi Kaku abandons the MPDT drive here; https://www.youtube.com/watch?v=cLxx_saZEGY

    He gets the mass fraction of the chemical rocket wrong ( by 10% ) when talking about mass of the fuel on a rocket. He also has a magnitude error in the distance to the Alpha Centaur ( 10 000 times around the Earth ).

    But he does pretty well tell what a MPDT is all about.

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  • topspeed
    replied
    One way to explain this is this picture here.

    Small craft capable to reach orbit and jettison the " parasite" craft able to move from Earth to Mars...and spread the solar arrays like a sail boat....and get some decent speed increase with minimal weight loss.
    Attached Files

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  • topspeed
    replied
    Here my math for the aeroplane type rocket efficiency.
    Attached Files

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  • topspeed
    replied
    The weight of the fuel has been increased by 20% ( by just making bigger casings ).

    So I have two stage rocket now and all stages are reusable.

    Any comments ?
    Attached Files

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  • topspeed
    replied
    Stageing has evolved.

    https://en.wikipedia.org/wiki/Gallium_arsenide

    See how effective the solar panels can be nowadays...and lite.
    Attached Files

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  • topspeed
    replied
    These should convince you that at really high speed the space rocket can also be flown like an aeroplane.
    Space becomes dence at relativistic speeds.There are 1.8 atoms per 1 cm3 in empty space.
    Attached Files

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  • topspeed
    replied
    To tell you about the possible top speed of this device you may want to get familiar with the term Oberth effect and gravity assist.
    Since the MPDT is able to produce delta-v of 3500 km/s and Oberth effect can multiply this speed 16 fold when passing the sun...then here is the picture to get you familiar with the planetary aligned gravity assist.
    In my mind this is the only way to actually reach other star systems.
    Attached Files

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  • topspeed
    replied
    Here is more about this Spaceshiptwo.

    http://www.virgingalactic.com/human-.../our-vehicles/

    My design is pretty much based on a similar idea.
    Attached Files

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  • topspeed
    replied
    Here is Space Ship Two...the tank is bigger than I drew above.
    Attached Files

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  • topspeed
    replied
    This has got more boost now.
    Attached Files

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  • topspeed
    replied
    More of my space oddities can be found here; http://spacefellowship.com/Forum/vie...243863487c9d8e

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  • topspeed
    replied
    Few percent size increase to get a man on the mars surface on back to Earth.

    This brings feasability to the " 3XD" Project.
    Attached Files

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  • topspeed
    replied
    Ludicrous speed explained; https://www.youtube.com/watch?v=ygE01sOhzz0

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  • topspeed
    replied
    Mars flying and space travelling cannot become any cheaper than this.

    System may cost three fold compared to jet fighter, but that is still pretty cheap as one launch of the space shuttle cost 450 000 000 US dollars.
    Attached Files

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  • topspeed
    replied
    An another comparison share light about its economical aspects that come with the "small" size.
    Attached Files

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  • topspeed
    replied
    This has a landing gear it needs.

    https://www.youtube.com/watch?v=TFcCx4uR6rk

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  • topspeed
    replied
    I'll explain a bit more.

    This is not able to land on Mars as it is.
    But packing everything tightly with solar panels and all.
    This has gotta be the way of the future for space travel for years to come ( MPDT ).
    Attached Files

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  • topspeed
    replied
    This is a good intro too; https://www.youtube.com/watch?v=HESOat2iPzU

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  • topspeed
    replied
    I got a kick outa this; https://www.youtube.com/watch?v=BJppeRWSD94

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