Future Beacon



Flight

by James Adrian


      After decades of poor progress in vertical takeoff and landing craft relative to that of other kinds of aircraft we see this DARPA Solicitation. It does not surprise me that the advances made in altitude and speed did not carry with it all of the capabilities of flight that we value. In my view, we have simply been advancing along the wrong path.

      Our initial imitation of birds was perhaps inevitable, but nonetheless unfortunate. Evolutionary constraints guarantee that we will not see a suitable bird to imitate any time soon.

      I suggest a different starting point - a craft that is circular as seen from above or below, and approximately elliptical as seen from the direction of the horizon - a saucer. This basic configuration offers many options for propulsion, optimum sonic stealth and maximum vertical to horizontal air resistance.

      Some propulsion options require the outer shell to spin about the center. In this event, the crew must be standing or sitting on a non-spinning platform and viewing outside scenes through either a transparent band of the outer shell or a video representation. A non-spinning platform can be arranged if some of the mass of the craft is spinning in the direction opposite to that of the outer shell and has an inertial stabilizer such as a gyroscope. This mandates at least three frames of reference, two magnetically suspended from a vertical shaft at the center.

      If aerodynamic propulsion and a spinning outer shell is chosen, either articulating peripheral blades (small compared to the diameter) or a multiplicity of peripheral jet-exhaust ports are indicated. Electromagnetic propulsion can be used with or without a spinning outer shell.

      For a craft intended exclusively for the atmosphere and using aerodynamic propulsion, a split outer shell is possible. The top half and the bottom half would spin in opposite directions and use either articulating peripheral blades or a multiplicity of peripheral jet-exhaust ports to avoid the necessity of inertial stabilization.


Contact

      Please feel free to write to me directly for more information or to make suggestions or comments. My email address is jim@futurebeacon.com. You can also go to my contact page to get my full contact information. Suggestions, questions, additional information and critiques are very welcome.