Frank E Hudson

US Patent:

56044380, Feb 18, 1997

Filed:

Mar 6, 1995

Appl. No.:

8/406213

Inventors:

Frank E. Hudson - Ridgecrest CA

Assignee:

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

International Classification:

G01N 2761

US Classification:

324464

Abstract:

A high voltage differential is applied across two separated electrodes by a oltage supply. Between these electrodes is located a sample of the solid propellant or other energetic material. The voltage differential across the electrodes generates a spark of measurable voltage, current and time duration in the sample in order to foretell at what energy level sustained ignition of the sample occurs. This spark is measured by a voltage monitor which, upon reaching a predetermined level, sends a signal to a short-circuiting network. The short-circuiting network, after a predetermined time delay, shorts the electrical path across the electrodes thereby removing the voltage differential across the sample and ending the ignition test. An operator is then able to determine visually whether or not the spark of known voltage, current and time duration has created sustained ignition of the sample material. With this information much can be ascertained about the electrostatic hazards of energetic material, thereby making the handling of these materials less dangerous.

US Patent:

60391243, Mar 21, 2000

Filed:

Sep 17, 1998

Appl. No.:

9/162459

Inventors:

Howard L. Bowman - Ridgecrest CA
Robert L. Darwin - Arlington VA
William M. Maraffio - Ridgecrest CA
Larry D. Sawyer - Ridgecrest CA
Robert B. Williams - Alexandria VA
Frank E. Hudson - Muskegon MI
Mary Hunstad - Manassas VA
Mark W. Decker - Ridgecrest CA

Assignee:

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

International Classification:

A62C 3710

US Classification:

169 61

Abstract:

An fire protection system for use in shipboard magazines wherein electric at detectors in a ship magazine provide temperature data to a fire panel. Upon detection of predetermined threshold temperatures, the fire panel initiates an alarm system and activates a fire sprinkler valve to apply water to fire sprinklers in the magazine. Temperature data from the heat sensors and stored weapon response data are used by a damage control system to generate graphic display data showing thermal conditions in the magazine and estimated times and temperatures at which stored munitions will undergo thermal destruction.

US Patent:

53515536, Oct 4, 1994

Filed:

May 3, 1993

Appl. No.:

8/059769

Inventors:

Albert H. Lepie - Ridgecrest CA
R. Allen Boyack - Ridgecrest CA
Frank E. Hudson - Ridgecrest CA
Larry D. Sawyer - Ridgecrest CA

International Classification:

G01N 308

US Classification:

73826

Abstract:

A flywheel tensile testing apparatus for viscoelastic materials is used for high-rate tensile testing to determine the mechanical properties such as the initial modulus, the stress-strain characteristics, energy at break, and void formation of energetic materials such as solid propellants and plastic bonded explosives under deformation rates in excess of 20,000 inches per minute. The tensile tester is comprised of a plurality of support trestles which are mounted on a common base. A flywheel and a light weight engagement wheel are mounted for rotation on the support trestles. A clutch and rotor assembly is located between the flywheel and the light weight engagement wheel so that when the clutch is engaged, the stored energy of the flywheel is transferred to a rotor assembly which in turn drives the light weight engagement wheel. The flywheel is driven by a variable speed motor. The activation of the clutch and rotor assembly are preferably performed in response to an electronic signal.

US Patent:

20180013514, Jan 11, 2018

Filed:

Apr 3, 2017

Appl. No.:

15/477429

Inventors:

- McLean VA, US
Frank HUDSON - Monument CO, US

Assignee:

BOOZ ALLEN HAMILTON INC. - McLean VA

International Classification:

H04K 3/00
H04B 1/10

Abstract:

A system and method for mitigating interference of a radio frequency (RF) signal includes a receiver configured to include: a decomposition module that decomposes a received RF signal into sub-bands via a multi-stage filter, each sub-band being configured to operate on real and imaginary components of the RF signal, and each stage being scaled for separating time-frequency content of the desired signal from time-frequency content of the interference; a mitigation module that suppresses the interference of the RF signal in each sub-band by zeroing an output of a respective sub-band when the frequency content exceeds a predetermined threshold; and a reconstruction module that reconstructs the RF signal from the mitigation module minus the interference. The receiver is configured to determine whether the multi-stage filter is to be reinitialized with updated time and frequency resolution requirements to improve system response.