SOS! A rescue helicopter with laser beam rotor blades

Name :
Hayato Isoda
COUNTRY :
Japan / Gunma
AGE :
10
YEAR :
2016
PRIZE :
The Prize of the Director of the National Science Museum
COMMENTARY :
In order for this helicopter to fly through narrow spaces between buildings when a disaster occurs, the rotor blades are laser beams that don't hit against the buildings.
SOS! A rescue helicopter with laser beam rotor blades