William Anthony Duncan

US Patent:

39532623, Apr 27, 1976

Filed:

Nov 20, 1969

Appl. No.:

4/886597

Inventors:

William A. Duncan - Huntsville AL
James A. Murfree - Huntsville AL
Pasquale Martignoni - Huntsville AL
Walter W. Wharton - Huntsville AL
John F. Phillips - Florence AL

Assignee:

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

International Classification:

C06B 2534
C06B 4300
C06B 4708

US Classification:

149 36

Abstract:

The use of methoxylamine nitrate (CH. sub. 3 ONH. sub. 2. NHO. sub. 3) as an addve to exothermally decomposing liquid monopropellants such as hydrazine and hydrazine water mixtures to lower the freezing points of the monopropellants and thereby render the monopropellants usable in gas generators at very low temperatures.

US Patent:

45009970, Feb 19, 1985

Filed:

Apr 1, 1982

Appl. No.:

6/364176

Inventors:

Gary F. Morr - Thousand Oaks CA
William A. Duncan - Huntsville AL

Assignee:

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

International Classification:

H01S 322

US Classification:

372 58

Abstract:

A self-contained device for pumping supersonic gas flows. The pumping dev consists of a chemically activated material capable of chemical reaction with the gas mixture to be pumped, thermal ballast material, a hermetically sealable vessel for containing the chemically active material, and internal surfaces to provide gas flow passages. The internal gas flow passages are geometrically prescribed to accept a supersonic gas flow, to induce a stable normal shock, to diffuse the subsonic flow obtained after the normal shock, and to distribute the low velocity, subsonic gas flow to the reactive chemical pump material.

US Patent:

39532615, Apr 27, 1976

Filed:

Jun 18, 1969

Appl. No.:

4/834618

Inventors:

William A. Duncan - Huntsville AL
John F. Phillips - Florence AL
James A. Murfree - Huntsville AL
Walter W. Wharton - Huntsville AL

Assignee:

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

International Classification:

C06D 510

US Classification:

149 36

Abstract:

The use of methoxylamine hydrochloride (CH. sub. 3 ONH. sub. 2. HCl) as an adive to exothermally decomposing liquid monopropellants such as hydrazine and hydrazine water mixtures to lower the freezing point of the monopropellants and thereby render the monopropellants usable in gas generators at very low temperatures.

US Patent:

39416267, Mar 2, 1976

Filed:

Jun 24, 1970

Appl. No.:

5/048781

Inventors:

John F. Phillips - Florence AL
James A. Murfree - Huntsville AL
Walter W. Wharton - Huntsville AL
William A. Duncan - Huntsville AL

Assignee:

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

International Classification:

C06D 510

US Classification:

149 36

Abstract:

The use of methoxylamine perchlorate (CH. sub. 3 ONH. sub. 2. HClO. sub. 4) as an dditive to exothermally decomposing liquid monopropellants such as hydrazine and hydrazine water mixtures to maintain energetic monopropellants and at the same time lower the freezing point of the monopropellants, thereby rendering the monopropellants usable in gas generators at very low temperatures.