Swapper Concept Development Issues


                    To put everybody in context, this is the very first idea that I had

                    in mind and since picture worth a thousand words,

                    here is the battery exchanger initial concept:


                   Grabber arms, battery casings, electrical connections

                   and some flip-flop action strategy mechanism.


                   Here’s some interesting development aspects in pictures ……….

                   What we are interested in is to have the incoming VTOL precisely

                   positioning itself so that the SWAPPER does its job.

                  The last 10 inches are the most critical for mechanical final touch down alignment.

                  This is the first concept attempt to mechanically guide de VTOL in place.


                    In this case, the legs are guided by the conical receptacles.


                    And then, the concept evolved to this:



                            Earlier initial mechanical contact with the deck increases

                           the correction capacity.

                           The awaiting charged battery is protected from

                           excessive VTOL derivation on the axes.


                          This is the last evolution of the deck concept that I came with


                           The arrow show the derivation slop.

                           In fact this set up permit a YAW mechanical correction of 90 degrees.

                           I’am ending this first development report with what is coming next.

                          Getting some factual datas on this last 10 inches of

                          pre-landing bumping activity.


                         Some pictures of the testing material:



E-mail me when people leave their comments –

You need to be a member of diydrones to add comments!

Join diydrones


  • @ Bernard. I think multiple cooper springs (2 - 4 will be fine) on each contact will handle 70 - 90 amps of current. I'll try to make a drawing of that later.
  • The + on top and - on both sides is a great idea - polarity problem solved.
  • Stephen,

    A polarity independent approche can be achive by the way you position the contacts on the battery containor.

    As an exemple, if you put the + on top of the containor and the - on both side, no polarity dilemma.

    Sound simple but ........ let's wait and try .....


  • d-creator, Large current can be handle by a good size(surface and current capacity) contact with a certain pressure to overcome vibrations. This issue is very important and I am alwready shopping to identify the contacts. The contacts have to fit in the battery containor and be independent of any battery physical contact.

    I will test the approche an publish results pretty soon ..... thanks for commenting. 

  • It might be worth figuring out a way to make the guide leg pattern asymmetrical so that there's only one way that they will fit for polarity, etc.


  • great idea, but what about electrical connection. it must handle large current.
This reply was deleted.