Time filter

Source Type

Falls Church, VA, United States

Northrop Grumman Corporation is an American global aerospace and defense technology company formed by Northrop's 1994 purchase of Grumman. The company was the fourth-largest defense contractor in the world as of 2010. Northrop Grumman employs over 68,000 people worldwide. It reported revenues of $25.218 billion in 2012. Northrop Grumman ranks No. 72 on the 2011 Fortune 500 list of America's largest corporations and ranks in the top ten military-friendly employers. It is headquartered in West Falls Church, Virginia. Wikipedia.

A system for providing a scalable semantic mechanism for policy-driven assessment and action taking on dynamically changing data includes a policy context that is a collection of ontologies that capture policies of the enterprise in a semantic, declarative grammar, in a semantic database, a performance context that receives and stores sensor data output monitoring managed assets persisted in a time-series database, a workflow context that determines the workflow process necessary to manage the managed asset based on the governance policies and sensor data, implemented using a workflow engine that supports a declarative workflow language, a decision context that contains business rules encoded in a declarative grammar, implemented using a business rule engine and in which the business rules define conditions under which an asset is corrected, and an adjudication context that defines all associations between the four contexts that are necessary to monitor and manage the enterprise managed assets.

Northrop Grumman | Date: 2015-05-11

A plasma power limiter fabricated using wafer-level fabrication techniques with other circuit elements. The power limiter includes a signal substrate having a first side and a second side, an input signal line formed on the first side, a signal transmission line formed on the second side and an output signal line formed on the first side. The power limiter also includes a ground substrate having a first side and a second side, and being bonded to the signal substrate to form a sealed cavity including an ionizable gas therebetween. The ground substrate includes a ground metal layer formed on the second side. A signal propagating on the input signal line at a power level greater than a threshold power level generates a voltage potential across the cavity that ionizes the gas and generates a plasma discharge, and limits power of the output signal coupled to the output signal line.

Northrop Grumman | Date: 2015-04-08

A pulsed fiber laser amplifier system including a plurality of optical seed beam sources each generating a seed pulse beam at a different point in time and at a different wavelength than the other seed beam sources. The system further includes an optical coupler responsive to each of the seed pulse beams that outputs the pulse beams on a common optical path as a pulsed envelope beam. The system also includes a plurality of fiber amplifier stages responsive to the pulse envelope beam from the optical coupler that amplifies each pulse in the pulse envelope beam. The system further includes a spectral-temporal beam combiner that provides a separate delay for each of the amplified pulses in the pulse envelope beam so as to output a single output beam pulse that is in overlap of all of the individual amplified pulses in the pulse envelope beam.

A system and method for real-time detection of anomalies in database or application usage is disclosed. Embodiments provide a mechanism to detect anomalies in database or application usage, such as data exfiltration attempts, first by identifying correlations (e.g., patterns of normalcy) in events across different heterogeneous data streams (such as those associated with ordinary, authorized and benign database usage, workstation usage, user behavior or application usage) and second by identifying deviations/anomalies from these patterns of normalcy across data streams in real-time as data is being accessed. An alert is issued upon detection of an anomaly, wherein a type of alert is determined based on a characteristic of the detected anomaly.

Northrop Grumman | Date: 2015-07-07

The present invention relates to a mechanical system that modulates airflow in an aircraft inlet diffuser that is used in conjunction with an aircraft engine that integrates both a center turbine engine and a high Mach engine such as a constant volume combustor (CVC) arrangement or ramjet arrangement with intakes formed co-centrically about the turbine. The modulation system uses an articulating cone. When in a retracted position the articulating cone allows the aircraft to operate in low speed mode as only the turbo jet receives airflow. At its widest expanse, the articulating cone completely covers the turbo jet circular intake face, precluding operation of the turbine engine.

Discover hidden collaborations