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TOPICS
We have succeeded to fly a microairplane by laser.
Applied Physics Letters. June 10 (2002)
Micro-airplane Propelled by Laser-Driven Exotic Target
T.Yabe, C.Phipps, M.Yamaguchi , R.Nakagawa , K.Aoki , H.Mine , Y.Ogata ,
C.Baasandash , M.Nakagawa, E.Fujiwara, K.Yoshidac , A.Nishiguchic and
I.Kajiwara
Abstract
We propose a propulsion concept to drive a micro-airplane by laser that can
be used for observation of climate and volcanic eruption. Since it does not
have to develop the thrust for vertical takeoff, and it has no engine in the
normal@sense, the micro-airplane can be very light, its payload consisting
only of observation and communication equipment. In order to demonstrate the
concept, we succeeded in flying a paper micro-airplane driven by a 590-mJ,
5-ns pulse YAG(Yttrium Aluminum Garnet) laser impinging on a double-layer
"exotic target". The coupling efficiency agrees well with simulations and
with experiments.
Flying craft airplane Q-Switch YAG Laser System(650mJ/5ns)
Dr.Claude Phipps(Photonic Associates)
At Banquet of SPIE Conference in Taos, New Mexico, USA (April 24, 2002)
World Record 10**4 N.sec/MJ was achieved by Water Exotic Target.
Repetitive Propusion Becomes Possible by Water Supply System.
Efficient Acceleration by Transparent Tamper
was Proposed by T.Yabe in 1976.
T.Yabe and K.Niu
Numerical Analysis on Implosion of Laser-Driven Target Plasma.
J.Phys.Soc.Japan, 40 , 863-868(1976).
SPIE Proc. 4760
an invited paper at SPIE conference on High-Power Laser Ablation 2002
21-26 April 2002, Taos, New Mexico, USA
Laser-Driven Vehicles - from Inner-Space to Outer-Space -
T.Yabe,C.Phipps,K.Aoki, M.Yamaguchi, Y.Ogata, M.Shiho, G.Inoue, M.Onda,
K.Horioka,I.Kajiwara and K.Yoshida
Abstract
Laser supported propulsion of a micro-airplane with water-covered ablator is
demonstrated. The repetitive use of overlay structure is experimentally
demonstrated with specially-designed water supply. The various transparent
overlay is investigated by the CIP-based hydrodynamic code and experiments by
pendulum and semi-conductor load cell. The momentum coupling efficiency of
5000 N.sec/MJ has been achieved by ORION experiments that agree with
the simulation code. With the maximum efficiency 10**5 N.sec/MJ
predicted by the simulation, 30 pulses of MJ laser can give the sound speed
to 10 tons airplane. The concept can also be used for driving a micro-ship
inside human body and a robot under the accidental circumstance of nuclear
power reactor in which large amount of neutron source makes electronic device
useless.
Nanomachine in blood vessel X-ray is coming outside body
driven by X-ray