Floyd W Hagen

US Patent:

53598881, Nov 1, 1994

Filed:

Feb 16, 1993

Appl. No.:

8/018071

Inventors:

Floyd W. Hagen - Eden Prairie MN

Assignee:

The B. F. Goodrich Company - Akron OH

International Classification:

G01C 2100

US Classification:

73178R

Abstract:

An apparatus detects an air turbulence and wind shear encountered by an air vehicle having an accelerometer sensing air vehicle vertical acceleration. The apparatus includes a pressure sensor having a pressure sensing port for sensing a pressure parameter of a local air flow which changes with changes in the local airflow turbulence, and a fast time constant pressure transducer coupled to the pressure port for generating a transducer signal representative of the parameter. Differentiating means calculates a time derivative of the transducer signal and provides a turbulence signal representative of the time derivative. Subtracter means provides the difference between the turbulence signal and a vertical acceleration signal from the accelerometer, to provide a wind shear indicating signal indicative of an increase in air turbulence. The apparatus also preferably includes a second differentiating means for calculating a time derivative of the wind shear indicating signal and provides a turbulence severity signal which when above a selected level indicates that corrective control action should be taken.

US Patent:

48360198, Jun 6, 1989

Filed:

Aug 27, 1987

Appl. No.:

7/089971

Inventors:

Floyd W. Hagen - Eden Prairie MN
Richard V. DeLeo - Hopkins MN

Assignee:

Rosemount Inc. - Eden Prairie MN

International Classification:

G01C 2100

US Classification:

73180

Abstract:

An air data sensor comprising an elongated probe having a standard, sharped edge, orifice pitot port or opening, and a tapered leading end that is elongated with respect to its lateral dimensions along the longitudinal axis of the probe. The leading end portion blends into the main portion of the probe at a desired relatively short distance downstream from the pitot port. The probe comprises a tube or barrel that can be rectilinear or circular in cross section. Sets of sensing ports are utilizied and at least one pair of ports is oriented on a common axis and facing in opposite directions. Reliable sensing can be obtained when two sets of oppositely facing ports are used with the axis of each set 90. degree. to the axis of the other set. By using the pressure sensed in more than one combination, that is by co-using the pressures, static pressure, impact pressure, angle of attack and angle of sideslip can be derived.

US Patent:

46455175, Feb 24, 1987

Filed:

Sep 20, 1985

Appl. No.:

6/778416

Inventors:

Floyd W. Hagen - Eden Prairie MN
Richard V. DeLeo - Hopkins MN

Assignee:

Rosemount Inc. - Eden Prairie MN

International Classification:

B01D 1900

US Classification:

55182

Abstract:

A unitized drain manifold apparatus for removing water from air in a conduit of an air data sensor system for an aircraft comprises a manifold having a plurality of drain cavities therein. Each drain cavity has a center chamber portion and two end drain chambers positioned vertically above and below the center chamber portion when the aircraft is at rest. The end drain chambers are used for accumulation of water which is separated from the air pressure signal. The cavities are each equipped with two drain passageways such that the accumulated water can be removed from the apparatus in normal or inverted positions. The positioning of the external drain passageways permits water accumulation and removal to occur independently of the spatial orientation of the apparatus and the symmetry of the manifold permits it to be mounted on either side of the aircraft.

US Patent:

51307073, Jul 14, 1992

Filed:

Aug 26, 1991

Appl. No.:

7/751646

Inventors:

Floyd W. Hagen - Eden Prairie MN

Assignee:

Rosemount Inc. - Eden Prairie MN

International Classification:

G08B 2100

US Classification:

340945

Abstract:

A preassembled air data sensor probe and air data transducer assembly has permanently connected flexible tubing coupling the air data transducer fittings and the sensor fittings. The flexible tubing permits the air data sensor and air data transducer to be installed into an air vehicle after having been preassembled and pretested for leaks at the factory. The permanently attached assembly avoids the need for calibration or pressure checks after installation on the aircraft. The preassembled flexible tubing permits manipulation of the transducer to mount it into the proper location even in tight quarters. The flexible tubing can have a section that acts as a drain trap for accumulating ingested water.

US Patent:

56285655, May 13, 1997

Filed:

Jun 2, 1995

Appl. No.:

8/460103

Inventors:

Floyd W. Hagen - Eden Prairie MN
Gregg A. Hohenstein - Bloomington MN
John A. Severson - Eagan MN

Assignee:

The B.F. Goodrich Company - Akron OH

International Classification:

G01K 1302
G01K 114
G01C 2100
G01P 5165

US Classification:

374143

Abstract:

An aerodynamic air data sensing probe adapted for mounting to an air vehicle and capable of generating signals related to a fluid flowing relative to the air vehicle. A fluid inlet positioned on a first end of the strut faces generally transverse to the fluid flow selectively admits fluid to an internal strut cavity due to a pressure differential thereacross. In operation, the pressure differential forms between the first end surface of the aerodynamically-shaped, forward-inclined strut and probe exhaust ports. A temperature sensing element disposed in the internal strut cavity registers the temperature of the fluid and the sensed fluid is expelled from the internal strut cavity through the exhaust ports. In another embodiment, a barrel-shaped probe head adapted to sense fluid pressure connects to a portion of the leading edge of the strut to form an aerodynamic multifunction air data sensing probe.

US Patent:

50628690, Nov 5, 1991

Filed:

Oct 10, 1990

Appl. No.:

7/596735

Inventors:

Floyd W. Hagen - Eden Prairie MN

Assignee:

Rosemount Inc. - Eden Prairie MN

International Classification:

B01D 5300

US Classification:

55159

Abstract:

A water separating device for a pressure measurement such as static, pitot measurement system provides a plurality of ports therethrough such that water, snow and ice from atmospheric air is substantially removed therefrom so that desired parameters such as temperature or pressure can be measured. Separation of water, snow and ice as disclosed eliminates additional chambers for collecting same and eliminates drain systems and drain valves to eliminate same from the measurement system. Since sensors are not exposed to moisture, sensor dependability and longevity is enhanced.

US Patent:

56168616, Apr 1, 1997

Filed:

Jun 7, 1995

Appl. No.:

8/475350

Inventors:

Floyd W. Hagen - Eden Prairie MN

Assignee:

Rosemount Aerospace Inc. - Burnsville MN

International Classification:

G01C 2120

US Classification:

73180

Abstract:

An air data sensing system utilizes a plurality of probes, each probe having three pressure sensing ports, and each assembled with a sensor package that minimizes the need for corrections due to temperature or other variations in ambient conditions. The system is mounted on an air vehicle using two or three sets of right and left pairs of probes. The probes of each set are vertically spaced from the probes of the other sets. The probes are made light weight and small. In the arrangement shown the probes provide triple redundancy and because of the orientation on the air vehicle provide all needed pressure and angle information, including the angle of sideslip.

US Patent:

43786979, Apr 5, 1983

Filed:

Jul 6, 1981

Appl. No.:

6/280860

Inventors:

Richard V. DeLeo - Hopkins MN
Floyd W. Hagen - Eden Prairie MN

Assignee:

Rosemount Inc. - Eden Prairie MN

International Classification:

G01P 5165

US Classification:

73182

Abstract:

A strut mounted multiple static tube providing, as shown, multiple separate static pressure measuring systems and using one probe with separate sets of pressure sensing ports for each system. The probe is designed to have a surface configuration which provides substantially identical static pressure conditions at each set of sensing ports while the axial length of the barrel portion of the sensing probe is maintained at a minimum and the pressure effects from the adjacent structures such as the strut are compensated for. The structure includes a barrel portion of the probe having a surface annular wave pattern with sections of different diameters which causes large, uniform changes in the pressure pattern along the probe to provide areas of both positive and negative pressure levels for aerodynamic compensation. The positions for the ports for the separate systems are selected from a pressure profile of the probe so the ports are located at desired pressure areas.