A small, submersible drone developed at John Hopkins’ research institute’s Applied Physics Laboratory (APL) can stay submerged for months, and instantly surface and launch on command without leaving a trace.
The drone is fabricated from composite materials and coatings that prevents salt water corrosion. 3D printing enables production of complex, low cost structures necessary to endure the pressure at depths of hundreds of feet, yet be light enough for flight.
In the great tradition of the land mine and the subsurface mine comes the CRACUN. If you were wondering, a Kraken is a legendary sea monster of giant size that was said to dwell off the coasts of Norway and Greenland. Very cool use of materials that really showcases the value of 3D printing.
Interesting to think about the possibilities for civilian use. For instance, stash one in a flood zone or along a fault line where it could launch and begin providing reporting immediately – eliminating the delay involved in getting a team to the scene.
Read more at Defense Update