Raymond P Tytus

H9768, Nov 5, 1991

Mar 16, 1990

7/495052

Joseph E. Matta - Bel Air MD
Raymond P. Tytus - Bel Air MD

The United States of America as represented by the Secretary of the Army - Washington DC

G01N 1102

73 54

A novel falling cylinder extensional rheometer is provided for measuring elongational viscosity of a polymeric solution at stretch rates comparable to those associated with aerodynamic liquid breakup and which is suitable with toxic liquids. The rheometer consists of an upper cylinder and a lower cylinder, both vertically arranged or oriented and having their longitudinal axes coincidental. A small quantity of liquid is inserted between the end of the two cylinders that are vertically spaced one above the other. The upper cylinder is held fixed while the lower cylinder rests initially on top of an air cylinder piston. When the piston is activated, it quickly retracts downwardly allowing the lower cylinder to fall and stretch the liquid sample adhering between the ends of the upper and lower cylinders. A high speed camera is used to photograph the falling lower cylinder and the ligament stretching.

55592848, Sep 24, 1996

Apr 17, 1995

8/422966

Joseph E. Matta - late of Bel Air MD
Raymond P. Tytus - Bel Air MD

The United States of America as represented by the Secretary of the Army - Washington DC

G01N 1502
G01N 1514
G01N 1302
G01N 1100

73 6452

Disclosed is a method for measuring intermolecular force related physical properties of an objective liquid such as elongational viscosity and dynamic surface tension, comprising the steps of atomizing neat liquids to a particle size in a gaseous fluid stream, measuring the particle size of the atomized neat liquid, determining an empirical expression based on known physical properties of the neat liquid and the atomization conditions, and using the empirical expression and identical atomization conditions to rapidly determine the unknown intermolecular force related physical properties of the objective liquid, the objective liquid being another neat liquid or a liquid in which a solute is dissolved.

50526189, Oct 1, 1991

Jul 26, 1990

7/559114

Hugh R. Carlon - Fallston MD
Raymond P. Tytus - Bel Air MD
Arthur K. Stuempfle - Edgewood MD

The United States of America as represented by the Secretary of the Army - Washington DC

B05B 100
B05B 124

239 77

The invention includes an apparatus for protecting plants from frost. A jet urbine engine has an input into which a first liquid and a second liquid are injected into the exhaust stream of the engine. The jet engine also has an exhaust nozzle supplying an aerosol of the first liquid microencapsulated in the second liquid. The aerosol is dispersed about the plants to be protected from frost thereby to form a mist which acts as a protective radiation barrier for the plants. The invention also includes a method for protecting plants from frost.