SKYHOPSER 2R  (4.3 liters / 480 grams)  

ARROW I  (4.6 liters / 445 grams)  

UEBERFLIEGER MINI G  (6.1 liters / 570 grams)  

UEBERFLIEGER MINI EVO  (6.7 liters / 610 grams)  

FIRST FLIGHTS

MORE NEW ROCKETS

In   May   2016   we   announced   that   Raketfued   and the   DTMS   team   will   merge   into   a   new   Raketfued team.        To    ensure    consistency    we    decided    to discontinue    the    existing    rocket    line-ups    and    to focus   on   new   rockets.   Now,   four   weeks   later   we are    excited    to    share    the    first    results    of    this decision.   The   rockets   of   JCA   (the   “old“   Raketfued team)   will   be   called   Arrow ,   and   the   rockets   will   be improved   massively   in   comparison   to   the   current rocket   fleet.   The   Ueberflieger   rockets   of   DTMS   will be     overhauled     and     called     Ueberflieger     Evo . Furthermore,   we   plan   the   introduction   of   another new     rocket     line-up     later     this     year     (edit     from February   2017:   Learn   more   about   our   new   Falcon   line-up ) .   The   first   rockets   of   our   new   line-ups   are finalized   and   in   this   article   we   want   to   introduce them to you.

ARROW I

The     Arrow     1     rocket     is     the     successor     of     the SkyHopser   2R.   However,   we   were   able   to   reduce both    weight    and    footprint    while    enlarging    the volume.

This   is   possible   because   we   changed   the   method of   construction.   The   upper   section   of   the   pressure vessel   is   now   replaced   with   a   regular   plastic   bottle without     thread.     This     allows     us     to     place     the parachute   system   directly   onto   the   vessel.   Also,   in contrast    to    the    SkyHopser    2R,    the    Arrow    1    is designed   from   the   beginning   to   be   reinforced   with fiberglass.     The     vessel     is     stuck     together     with Sikaflex       11FC,       which       has       great       sealing characteristics.    We    also    added    a    third    layer    of fiberglass   to   improve   the   safety   during   launch   and to   increase   the   possible   launch   pressure.   The   fins of   the   rocket   are   smaller,   lighter   and   are   mounted a   little   bit   upwards.      That   improves   the   center   of gravity    and    safes    even    more    weight.    The    new nosecone   is   removable   and   can   be   equipped   with an altimeter.

UEBERFLIEGER MINI EVO

The     Ueberflieger     Mini     Evo     has     some     of     the improvements   in   common   with   the   Arrow,   but   there are   also   other   ones.   Thus,   we   were   able   to   reduce the    ratio    of    weight    to    capacity    and    to    improve reliability. 

The    capacity    of    the    rocket    was    increased    by    one additional   bottle   section,   which   equals   about   600ml. This   helps   also   optimizing   the   center   of   gravity   of the   rocket.   We   also   used   Sikaflex   11FC   to   stick   the vessel   together.   This   allows   us   to   launch   the   rocket at   17   bar   /      250   psi.   We   also   added   smaller   fins   to the   rocket.   But   not   only   that:   We   also   improved   the radial   deployment   system   of   the   rocket   ti   save   even more weight and to increase reliability.

Update   21st   July   2016:    The   Ueberflieger   Evo    is   now also   finished.   It   is   a   little   bit   larger   then   its   smaller brother,   the   Ueberflieger   Mini   Evo.      We   were   able to   launch   the   rocket   successfully   on   June   the   6th. Here are a few pictures:

The     Ueberflieger     Evo     has     three     more     bottle sections   when   compared   to   the   Mini   Evo.   You   can learn more about the rocket here.   The   JCA   department   is   quite   busy   with   building   the next   Arrow   rockets.   To   safe   time,   we   decided   to build    Arrow    2    and    Arrow    3    simultaneously.    The new      Arrow      rockets      will      have      the      same improvements    like    the    Arrow    1,    but    will    have bigger pressure vessels. Stay tuned!

Update   4th   October   2016:    The   pressure   vessel   of     Arrow    2     was    tested    today,    now    we    have    to assemble   the   rocket.   We   need   some   time   until   we are ready to test the Arrow 3.

Update     17th     October     2016:     The     Arrow     3     has successfully    passed    the    pressure    test    and    we launched   both   rockets   on   October,   16th   for   the first   time.   Since   there   were   problems   with   the   air pump,    we    were    limited    to    12    bar    /    170    psi. Nevertheless   the   launches   were   quite   impressive. Unfortunately    the    Arrow    2    crashed    during    their second   flight.   This   was   caused   by   the   parachute system    trigger    -    it    was    corroded.        We    plan    to rebuild    the    rocket    in    the    following    weeks    and months.