December 5, 2024 | International, Aerospace
November 21, 2018 | International, Aerospace, C4ISR
DARPA: CODE Demonstrates Autonomy and Collaboration with Minimal Human Commands
Ground and flight tests highlight CODE-equipped UASs' ability to collaboratively sense and adapt to locate and respond to unexpected threats and new targets
In a recent test series at Yuma Proving Ground in Arizona, DARPA's Collaborative Operations in Denied Environment (CODE) program demonstrated the ability of CODE-equipped Unmanned Aerial Systems (UASs) to adapt and respond to unexpected threats in an anti-access area denial (A2AD) environment. The UASs efficiently shared information, cooperatively planned and allocated mission objectives, made coordinated tactical decisions, and collaboratively reacted to a dynamic, high-threat environment with minimal communication.
The air vehicles initially operated with supervisory mission commander interaction. When communications were degraded or denied, CODE vehicles retained mission plan intent to accomplish mission objectives without live human direction. The ability for CODE-enabled vehicles to interact when communications are degraded is an important step toward the program goal to conduct dynamic, long-distance engagements of highly mobile ground and maritime targets in contested or denied battlespace.
“The test series expanded on previously demonstrated approaches to low bandwidth collaborative sensing and on-board planning. It demonstrated the ability to operate in more challenging scenarios, where both communications and GPS navigation were denied for extended periods,” said Scott Wierzbanowski, DARPA program manager for CODE.
During the three-week ground and flight test series in a live/virtual/constructive (LVC) environment, up to six live and 24 virtual UASs served as surrogate strike assets, receiving mission objectives from a human mission commander. The systems then autonomously collaborated to navigate, search, localize, and engage both pre-planned and pop-up targets protected by a simulated Integrated Air Defense System (IADS) in communications- and GPS-denied scenarios.
“The demonstrated behaviors are the building blocks for an autonomous team that can collaborate and adjust to mission requirements and a changing environment,” said Wierzbanowski.
The DARPA team also has advanced the infrastructure necessary to support further development, integration, and testing of CODE as it transitions to future autonomous systems.
Achievements include incorporation of third-party autonomy algorithms into the current software build, the creation of a government repository and lab test environment for the CODE algorithms, and the successful demonstration of the Johns Hopkins University Applied Physics Laboratory White Force Network capability to provide constructive threats and effects in an LVC test environment.
CODE's scalable capabilities could greatly enhance the survivability, flexibility, and effectiveness of existing air platforms, as well as reduce the development times and costs of future systems.
Further development of CODE and associated infrastructure will continue under DARPA until the conclusion of the program in spring 2019, followed by full transition of the CODE software repository to Naval Air Systems Command.
On the same subject
-
-
July 28, 2020 | International, Aerospace, Naval
How One Component Improved U.S. Navy F/A-18 Fleet Readiness
The U.S. Navy's F/A-18 and EA-18G fleets have experienced a dramatic turnaround. In 2017, less than half of the Navy's Boeing F/A-18 Super Hornets were able to fly. Now, 80% of its carrier-based fighters are ready for missions. The solution involved fixing a single component within the General Electric F414 engine. The Navy faulted constrained spending following the 2008 financial crisis and increased demand from the wars in the Middle East as reasons for the fleet's lack of readiness. More specifically, those conditions exacerbated an issue embedded in the military's vast supply chain. For 20 years, the Super Hornets and EA-18G Growlers have continually had electronic systems and new sensors added that placed greater and greater demand for power from its General Electric engine. That demand taxed a key component of the F414's electrical power generation system—its generator control unit (GCU), which keeps the generator output within a specified range. Initial attempts to address the GCU's issues through “component-level reliability improvements were not sustainable,” Navy spokeswoman Gulianna Dunn tells Aviation Week. Eventually, the GCU, already in short supply, failed to keep pace, causing a cascading effect on the availability of the carrier-based fighters. In the words of a Navy program official, the GCU was the “top platform degrader for all naval aviation.” When sequestration-era spending limits were imposed on the Pentagon in 2013, the entire military faced across-the-board funding cuts, including the operations and maintenance accounts. The Navy had to make tough choices about what bills it would pay and what to defer. At the same time, flight hours for the Super Hornet and Growler in the Middle East increased to meet the high operational tempos of Operation Enduring Freedom and Operation Inherent Resolve. As the Navy reduced aviation sustainment budgets, the program office did not have sufficient funding to purchase spare parts. From fiscal years 2013-16, the program office requested between $193.6-311.5 million and received between $85.2-136.3 million, according to a 2019 Defense Department Inspector General report. To compensate, Navy officials cannibalized aircraft to obtain the required spare parts. Maintainers removed working parts from an aircraft and installed them on a second jet to make that aircraft operational. A backlog of spare parts exacerbated fleet readiness and availability rates—an issue that affected the GCU acutely. New mission payloads created new types of electrical load, straining the aircraft's electronics, and wearing out the GCU at a faster rate. The second-generation (G2) and G3 GCU models that equipped the fleet could handle only about 150 flight hours. To increase reliability General Electric Aviation Systems, in consultation with the Navy, began working to redesign the GCU. A G3-to-G4 conversion kit could reach up to 532 flight hours. A G4 GCU was even better—sustaining 1,220 flight hours. Naval Air Systems Command (Navair) flight-tested the G4 in August 2015, and GE started production in mid-2016, Joe Krisciunas, general manager and president of GE Aviation Electrical Power Systems, tells Aviation Week. But the part was still only being manufactured at a minimal rate. The matter came to a head in October 2018, when then-Defense Secretary Jim Mattis set an 80% mission-capable readiness goal. At the time, only 260 F/A-18 and EA-18G aircraft were capable of flying missions—approximately 60%, far short of the mandate. In response, the Navy convened a Reliability Control Board (RCB) in 2019 to improve the F/A-18 and EA-18G mission-capable rate. The board pinpointed the main problem—insufficient production of the F414's GCU. The Navy had 200 of the units on back order. Navair worked with GE to ramp up GCU production, according to Lt. Cmdr. Jason Shaw, power and propulsion lead at the F/A-18 and EA-18G program office. The RCB determined GE was producing roughly six GCUs per month that would funnel into the program office, Boeing or Naval Supply Systems Command (Navsup). The program and Boeing had predictable delivery schedules, but Navsup would only receive GCUs that were produced beyond what the other two contracts required. “It created a hole on the supply shelf,” Shaw says. “When a jet would lose a GCU, there was no other one to replace it from supply.” The team brainstormed and decided GE would increase production to about 21 GCUs each month, while Navair would defer a contract for 320 GCU conversion kits to 2021. Pushing the contract would leave room for Navsup to acquire a more predictable delivery schedule. The company doubled its GCU production rate from 2018 to 2019, and almost doubled it again in 2020 to reach the 21 units per month rate, Krisciunas says. These courses of action resulted in zero GCU back orders by mid-June 2020. Additionally, the team is working with GE to resolve production issues related to GCU testing capacity. The plan is to purchase new, larger test stands and upgrade software on existing test equipment. This would allow the company to conduct more tests and further increase production. The test stand is a large electric motor that simulates the engine spinning the gearbox, and it has a pad that duplicates the GCU interface. A test stand costs approximately $1.5-2 million and typically takes 15-18 months to get up and running, Krisciunas says. Still, more improvements are being made: The program office is now assessing wiring issues that may have also contributed to low GCU reliability. The service awarded a $17 million contract to purchase additional software and cables for Automated Wiring Test Sets, which will allow aircraft mechanics to identify system faults. “The U.S. Navy is the only [Pentagon] military branch to have met and sustained the 80% readiness call that Mattis put out, and that is largely associated with resolving the issues with GCUs,” Shaw says. https://aviationweek.com/defense-space/aircraft-propulsion/how-one-component-improved-us-navy-fa-18-fleet-readiness
-
November 2, 2018 | International, C4ISR
US Army awards Raytheon $191 million contract for multi-mission radar
TEWKSBURY, Mass., Nov. 1, 2018 /PRNewswire/ -- The U.S. Army awarded Raytheon Company (NYSE: RTN) a $191 million contract for Ku-band radio frequency radars. KuRFS, an advanced electronically scanned array system, fills an immediate U.S. Army operational need for a counter-unmanned aerial vehicle radar. Already deployed, KuRFS delivers precision fire control as well as "sense and warn" capability for multiple missions including detection of rocket, artillery, mortar and swarming UAS threats. "Seeing threats – like swarming drones – as soon as possible on the battlefield is essential to protecting critical assets and saving soldiers' lives," said Andrew Hajek, senior director of tactical radars at Raytheon Integrated Defense Systems. "KuRFS makes this possible by delivering a unique combination 360-degree situational awareness, precision and mobility." KuRFS enables defense against multiple threat types through integration with the Land-Based Phalanx Weapon System, 50-caliber guns and 30 mm cannons. The radar also supports high-energy laser and the Coyote weapon system in both a ground mounted or vehicle mounted configuration. Raytheon' KuRFS is able to quickly address the urgent needs of the Army through a model of rapid-turn development and deployment. This reduces time to fielding, while providing enhanced flexibility to adapt to a quickly-changing threat environment in the drone space. About Raytheon Raytheon Company, with 2017 sales of $25 billion and 64,000 employees, is a technology and innovation leader specializing in defense, civil government and cybersecurity solutions. With a history of innovation spanning 96 years, Raytheon provides state-of-the-art electronics, mission systems integration, C5I™ products and services, sensing, effects, and mission support for customers in more than 80 countries. Raytheon is headquartered in Waltham, Mass. Follow us on Twitter. www.raytheon.com Media Contact Jackie Gutmann + 1.781.879.2789 idspr@raytheon.com SOURCE Raytheon Company http://raytheon.mediaroom.com/2018-11-01-US-Army-awards-Raytheon-191-million-contract-for-multi-mission-radar