Space Tunnel is an alternative Space delivery concept to LEO. Space tunnel uses explosives in the form of rings set
throughout the tunnel
A vacuum filled tunnel of 20-30 feet of inside diameter spans the earth's surface for 1,500 miles. The spacecraft,
in the form of a simple cone, placed inside the tunnel with its nose pointing back.
The propulsion is achieved by means of explosive charges distributed throughout the tunnel's length. The charges
in the form of rings and inset in the wall should be even with the inside surface of the tunnel. Below the sketch shows
a simple profile of the tunnel segment and three explosive rings.
The spacecraft possess two frictionless spacers one at its front and the other at its back. The spacers, temporarily,
guide the craft and prevent the compressive propellants from escaping between the wall of the tunnel and the spacecraft.
Consequently, the spacer attached at the tip, comes off to allow the reversed-cone to do its work. The alignment of
the craft is achieved by gyroscopes, onboard charges, and the remaining spacer. As the velocity of the craft increases,
the explosive velocity of the propellant particles will be insufficient to reach speeding craft. The cone, with radius to run,
of 1:12 units allows the particles to travel 1 unit and the craft 12 units that is 12X faster. For instance, if propellant
velocity propagates at 1mi/sec than the max velocity achievable for the craft is 12mi/sec. Also, its important that
imploding propellants land on all working surfaces of the cone. For that reason the timing of exploding charges will
slightly advance with increasing speed of the craft. The sealing abilities of the remaining spacer will no longer be needed
as the propellants back-pressure will fade. It will come off and the craft will continue to accelerate without it. Removing
the spacer reduces weight and allows for further advancement of timing.
The crafts continued elevation is provided by extra propellants on the bottom-wall of the tunnel and by occasional
rocket discharges onboard the craft. When the velocity of the craft is in excess of the LEO velocity the top-wall will have
extra propellants. After all charges depletion the tunnels wall flattens-out, resembling a cobra neck, and allows the
craft to turn around and to point its nose in the direction of travel. Then the craft enters successively increasing
pressurized segments separated by thin membranes. These segments provide smooth transition with atmosphere.
The very end the tunnel includes a noise suppressor that funnels outward. Soon afterwards the craft burns a pass
towards the horizon, and with its momentum overcomes gravity, and finds itself on its way to moon.
Proposed & written and by: Eugene P. Kovalenko
*Date: Oct 31 2008, Suggestion by Neil Flanagin: "plates directing explosives set throughout the tunnel*
-The suggestion mentioned is considered