Unidentified Flying Objects: Project "Grudge" (Technical Report No. 102-AC 49/15-100)

200 feet, and let calculated can be plotted various assured size. The nonlinear character of the curve should indicate an approximate upper limit to the size of the object.

If in addition, it is assumed that the flutter is due to aerodynamic forces, it is possible that more precise information could be obtained.

The required angular data can probably be extracted from nitrasses most reliably by the use of a concentration model which can be made to coillate or flutter in a known way.

SUCCESS, PART 2, OBJECT A.

Cenmtrial calculations alone cannot yield the size of objects observed from a single station; such observation, together with the assumption that the objects are essentially aircraft, can be used to set reasonable limits of also.

PART II, SECTION 3. THE POSSIBILITY OF SUPPORTING AND PROPOLLISHING A SOLID CONJECT OF VIRTUAL FEATURES.

Since astronomers have obviously colored their reports with talk of rays, John, beams, space ships, and the line, it is well to examine what possibilities exist along these lines. This is also important in view of the correlations of Part II, Section 4. of this report.

METHOD I. Propulsion and support by means of "rays" or "beams".

By "rays" or "beams" are either purely electromagnetic radiation or also radiation which is largely corpuscular like cathode-rays or coamio-rays or cyclotron-beams.

Now it is obvious that any device propelled or supported by such means is fundamentally a reaction device. It is fundamental in the theory of such devices that a given amount of energy is cost efficiently spent if the momentum thrown back or down is large. This means that a large case should