BrunoMado

Announcement

Collapse
No announcement yet.

The ultimate Panzerfaust thread?

Collapse
This is a sticky topic.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #61
    Panzerfaust is a recoilless launcher..
    this means the end is open ("Starker Feuerstrahl')
    but when the end is open ... how is internal
    pressure being built up to launch the warhead
    to the target ?
    Or is the blackpower propellant ("charge") a type of primitive rocket-engine ?

    Comment


      #62
      Originally posted by Selzhanik View Post
      Panzerfaust is a recoilless launcher..
      this means the end is open ("Starker Feuerstrahl')
      but when the end is open ... how is internal
      pressure being built up to launch the warhead
      to the target ?
      Or is the blackpower propellant ("charge") a type of primitive rocket-engine ?
      The propellant charge acts as a rocket.

      Bob Hritz
      In the land of the blind, the one eyed man is king.

      Duct tape can't fix stupid, but it can muffle the sound.

      Comment


        #63
        Thanks Bob, although I am not convinced yet :-) The propellant is ignited on the front ? Rockets should be ignited on the back with a nozzle ?
        Does somebody have a detailed blueprint ?

        Special Panzerfaust picture for collectors:

        Comment


          #64
          https://www.quora.com/How-did-the-Panzerfaust-work

          Comment


            #65
            If it was rocketpropelled... would it not burn the face of the soldier with exhaust gases when the projectile left the tube ?

            Comment


              #66
              Originally posted by Selzhanik View Post
              If it was rocketpropelled... would it not burn the face of the soldier with exhaust gases when the projectile left the tube ?
              It is NOT rocketpropelled!
              The fire leaves the tube both ways, so away from the soldier.

              Comment


                #67
                Finally found the answer...

                Thanks to :
                http://www.sadefensejournal.com/wp/?p=349

                The answer lies in the fluid mechanics of compressible fluids. Most of us are aware that passing a fluid through a constriction will raise the velocity of the fluid. (Simply take your garden hose and constrict the water stream with your thumb, and watch how the water speeds up.) The higher the upstream pressure the greater the downstream velocity. But in gas systems, this only happens until a condition called choked flow is reached. At that point further increases in upstream pressure do not cause further increases in downstream velocity.

                The result in a recoilless weapon is a rise in pressure sufficient to launch a projectile. While this principle is the basis for most recoilless weapons, in straight tube launchers it has substantial performance limitations. The outlet velocity of the propellant gases in a straight tube launcher remains subsonic. To achieve a choked flow situation quickly, very fast burning propellant is required; in the RPG-2 fine granular black powder is used. But this fast propellant in turn causes a rapid pressure rise in the area of the propelling charge. The maximum pressure must be limited to remain within the strength limits of the tube for function and safety. So there’s a limit to the weight of propellant that can be used, which in turn limits the mass of propellant gas available to form a countermass. As already mentioned, the gas velocity is limited in this system as well, the result is a relatively low available counterrecoil momentum. The final result of all these limiting factors is a very low muzzle velocity for a projectile of useful size. This was readily apparent in the early Panzerfausts, whose effective range was severely limited, at first to only 30 meters, by their low velocity and resultant highly curved trajectory

                Since gas velocity and tube strength impose limits on available counterrecoil momentum, the only way to really improve this system’s performance was to add additional propellant (and thus additional gas for the countermass), and since increasing the charge attached to the projectile would only increase the local pressure to unacceptable levels, the only solution available was to apply the maximum operating pressure over a greater length of the launch tube by distributing the propelling charge. In the later, longer-range Panzerfausts this was achieved by adding a secondary propelling charge approximately in the middle of the launch tube. The charge at the base of the projectile was initiated in the usual way, and this in turn ignited the secondary charge, boosting muzzle velocity and thus range, up to 100 meters and more.

                http://www.sadefensejournal.com/wp/?p=349

                Comment


                  #68
                  Panzerfaust Test in St Vith

                  http://www.liveleak.com/view?i=cc1_1397603283
                  Last edited by Höhe 112; 12-23-2016, 03:24 AM.

                  Comment


                    #69
                    Originally posted by Selzhanik View Post
                    Finally found the answer...

                    Thanks to :
                    http://www.sadefensejournal.com/wp/?p=349

                    The answer lies in the fluid mechanics of compressible fluids. Most of us are aware that passing a fluid through a constriction will raise the velocity of the fluid. (Simply take your garden hose and constrict the water stream with your thumb, and watch how the water speeds up.) The higher the upstream pressure the greater the downstream velocity. But in gas systems, this only happens until a condition called choked flow is reached. At that point further increases in upstream pressure do not cause further increases in downstream velocity.

                    The result in a recoilless weapon is a rise in pressure sufficient to launch a projectile. While this principle is the basis for most recoilless weapons, in straight tube launchers it has substantial performance limitations. The outlet velocity of the propellant gases in a straight tube launcher remains subsonic. To achieve a choked flow situation quickly, very fast burning propellant is required; in the RPG-2 fine granular black powder is used. But this fast propellant in turn causes a rapid pressure rise in the area of the propelling charge. The maximum pressure must be limited to remain within the strength limits of the tube for function and safety. So there’s a limit to the weight of propellant that can be used, which in turn limits the mass of propellant gas available to form a countermass. As already mentioned, the gas velocity is limited in this system as well, the result is a relatively low available counterrecoil momentum. The final result of all these limiting factors is a very low muzzle velocity for a projectile of useful size. This was readily apparent in the early Panzerfausts, whose effective range was severely limited, at first to only 30 meters, by their low velocity and resultant highly curved trajectory

                    Since gas velocity and tube strength impose limits on available counterrecoil momentum, the only way to really improve this system’s performance was to add additional propellant (and thus additional gas for the countermass), and since increasing the charge attached to the projectile would only increase the local pressure to unacceptable levels, the only solution available was to apply the maximum operating pressure over a greater length of the launch tube by distributing the propelling charge. In the later, longer-range Panzerfausts this was achieved by adding a secondary propelling charge approximately in the middle of the launch tube. The charge at the base of the projectile was initiated in the usual way, and this in turn ignited the secondary charge, boosting muzzle velocity and thus range, up to 100 meters and more.

                    http://www.sadefensejournal.com/wp/?p=349
                    This is excellent data, my panzerfaust still has the centre propellant charge in the pipe..

                    Comment


                      #70
                      What would be the price range for a complete demilled panzerfaust 60?

                      Thx

                      Comment


                        #71
                        always a question of the condition....like paint etc

                        Comment


                          #72
                          Good condition with readable words on the tube. I would say 70 % perfect.

                          Comment


                            #73
                            500,- EU and more...

                            Comment


                              #74
                              Thanks, up to 1000 euro is ok too?

                              Comment


                                #75
                                1000,- Euro???? you are talking about a very good one???

                                Comment

                                Users Viewing this Thread

                                Collapse

                                There is currently 0 user online. 0 members and 0 guests.

                                Most users ever online was 8,717 at 11:48 PM on 01-11-2024.

                                Working...
                                X