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  • topspeed
    Get on uppah !

    #21
    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
    If it looks good, it will fly good !
    -Bill Lear & Marcel Dassault


    http://max3fan.blogspot.com/

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    • topspeed
      Get on uppah !

      #22
      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.
      If it looks good, it will fly good !
      -Bill Lear & Marcel Dassault


      http://max3fan.blogspot.com/

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      • topspeed
        Get on uppah !

        #23
        NASA on SAP ( Solar Electric Propulsion ); https://www.youtube.com/watch?v=iCPFKBo7rco
        If it looks good, it will fly good !
        -Bill Lear & Marcel Dassault


        http://max3fan.blogspot.com/

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        • topspeed
          Get on uppah !

          #24
          Food and oxygen production.
          Attached Files
          If it looks good, it will fly good !
          -Bill Lear & Marcel Dassault


          http://max3fan.blogspot.com/

          Comment

          • topspeed
            Get on uppah !

            #25
            I switched to SRBs ( solid rocket boosters ) and started to get some serious numbers for this.
            Attached Files
            If it looks good, it will fly good !
            -Bill Lear & Marcel Dassault


            http://max3fan.blogspot.com/

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            • topspeed
              Get on uppah !

              #26
              It does not sound like great achievement, but it enables to make the trip at top speed of 136 km/s ( averaging possibly 80 km/s ).

              It means around 17 days ( 15 tops ) to get to Mars using MPDT. Coming back may take a bit longer ( 20-25 days ).
              Attached Files
              If it looks good, it will fly good !
              -Bill Lear & Marcel Dassault


              http://max3fan.blogspot.com/

              Comment

              • topspeed
                Get on uppah !

                #27
                Let us speculate a bit. If the theory above allows us to travel 37,5 % more efficiently to orbit it actually means that we can get 37,5 % more stuff to orgit than regular rocket. Then I am able to even increase the theorethical delta-v of the 100 000 s ISP of the MPDT engine. At half of that 830 km/s speed I am travelling at 420 km/s ( added orbital speed ) and trip to Xenon rich Jupiter would only take 16 days....and if it was possible to harvest Xenon on a flyby of Jupiter and I pushed the metal to the pedal I would reach Jupiter is just 8 days for "refueling".

                At any rate I would no reject the MPDT drive at this stage. I still have the planetary acceleration in my sleeve.
                Attached Files
                If it looks good, it will fly good !
                -Bill Lear & Marcel Dassault


                http://max3fan.blogspot.com/

                Comment

                • topspeed
                  Get on uppah !

                  #28
                  This here to display how systems are converted to serve new functions once in space.

                  Lander will be removed under the belly ( fuselage has hinges to do this ) serves as extra room and escape pod.

                  Solar arrays housing will be the beds for 4 people ( yes this is a 4 astronaut ship ).
                  Attached Files
                  If it looks good, it will fly good !
                  -Bill Lear & Marcel Dassault


                  http://max3fan.blogspot.com/

                  Comment

                  • topspeed
                    Get on uppah !

                    #29
                    Systems explained and 10% increase in size.
                    Attached Files
                    If it looks good, it will fly good !
                    -Bill Lear & Marcel Dassault


                    http://max3fan.blogspot.com/

                    Comment

                    • topspeed
                      Get on uppah !

                      #30
                      Comparison with Skylon.

                      Solid rocket boosters have 11 x more density than the pure LH2/LOX engine. I think that explains the size difference.
                      Attached Files
                      If it looks good, it will fly good !
                      -Bill Lear & Marcel Dassault


                      http://max3fan.blogspot.com/

                      Comment

                      • topspeed
                        Get on uppah !

                        #31
                        ISP figure corrected...it is 14500 s at its best.

                        This is bigger now...a bit heavier than shuttle but smaller.

                        If you wanna make it profitabale the tickets must be pretty expensive as the fuel alone s 6-7 million euros.
                        Attached Files
                        If it looks good, it will fly good !
                        -Bill Lear & Marcel Dassault


                        http://max3fan.blogspot.com/

                        Comment

                        • topspeed
                          Get on uppah !

                          #32
                          My claim is here. Based on limited amount of calculations.
                          Attached Files
                          If it looks good, it will fly good !
                          -Bill Lear & Marcel Dassault


                          http://max3fan.blogspot.com/

                          Comment

                          • topspeed
                            Get on uppah !

                            #33
                            Some tuning to get more Delta-V for the LEO with initial booster/mothership.

                            You have to do 25 trips to Mars with T-bird 2 ( on send one every week for 5 months ) to get 100 people on Mars like Elon Musk is doing with one shot.
                            Attached Files
                            If it looks good, it will fly good !
                            -Bill Lear & Marcel Dassault


                            http://max3fan.blogspot.com/

                            Comment

                            • topspeed
                              Get on uppah !

                              #34
                              Aeroplane like design for going to space have been studied.
                              Attached Files
                              If it looks good, it will fly good !
                              -Bill Lear & Marcel Dassault


                              http://max3fan.blogspot.com/

                              Comment

                              • topspeed
                                Get on uppah !

                                #35
                                Hello!

                                Fanny thing happened on this design today. I counted if it could land on Mars.... The mothership...and it could at 200 km/t speed only. As it has 1/3 wing loading of the space Shuttle....and the Mars gravity is just 38%. How come nobody realized this...on fumes it can land on Mars at 100 mph.
                                Attached Files
                                If it looks good, it will fly good !
                                -Bill Lear & Marcel Dassault


                                http://max3fan.blogspot.com/

                                Comment

                                • topspeed
                                  Get on uppah !

                                  #36
                                  This is a win win situation...even if the mothership crashes a bit the orbiter can sent the lander to pickem 2 pilots up. Plane could have the stuff to start a colony whole 30 metric ton of it. Also the mothership could be a shelter as it is.
                                  If it looks good, it will fly good !
                                  -Bill Lear & Marcel Dassault


                                  http://max3fan.blogspot.com/

                                  Comment

                                  • topspeed
                                    Get on uppah !

                                    #37
                                    I ended up on this concept. This gives a change to put 52 people on orbit or ISS. Considering that americans pay 70 mio usd to russian per astronaut to get them to ISS the 115 000 € fuel cost per customer does not sound ja too bad does it ? Fuel cost is estimated to be 3% of the expenses in space travel today.
                                    Attached Files
                                    If it looks good, it will fly good !
                                    -Bill Lear & Marcel Dassault


                                    http://max3fan.blogspot.com/

                                    Comment

                                    • topspeed
                                      Get on uppah !

                                      #38
                                      Calculations for investors to make this more believable.
                                      Attached Files
                                      If it looks good, it will fly good !
                                      -Bill Lear & Marcel Dassault


                                      http://max3fan.blogspot.com/

                                      Comment

                                      • topspeed
                                        Get on uppah !

                                        #39
                                        Nuclear power is obsolete in space; https://www.youtube.com/watch?v=wXiitWK_6Qg

                                        Isaac Arthus tells us that Zubrin mentioned that 1 kg of nuclear power delivers only 10 watts...when solar panels actually do make 1000 watts per kg.

                                        https://www.youtube.com/watch?v=wXiitWK_6Qg
                                        If it looks good, it will fly good !
                                        -Bill Lear & Marcel Dassault


                                        http://max3fan.blogspot.com/

                                        Comment

                                        • topspeed
                                          Get on uppah !

                                          #40
                                          Solar arrays are coming... https://www.youtube.com/watch?v=W8SUrR8Rb7o
                                          If it looks good, it will fly good !
                                          -Bill Lear & Marcel Dassault


                                          http://max3fan.blogspot.com/

                                          Comment

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