January 16, 2020 | International, Aerospace
Over the last five years Rolls-Royce has been pioneering world-first technology that will contribute to the UK's next-generation Tempest programme. In an aim to be more electric, more intelligent and to harness more power, Rolls-Royce recognised that any future fighter aircraft will have unprecedented levels of electrical power demand and thermal load; all needing to be managed within the context of a stealthy aircraft.
Before the launch of the Tempest programme, Rolls-Royce had already started to address the demands of the future. Back in 2014, the company took on the challenge of designing an electrical starter generator that was fully embedded in the core of a gas turbine engine, now known as the Embedded Electrical Starter Generator or E2SG demonstrator programme.
Conrad Banks, Chief Engineer for Future Programmes at Rolls-Royce said:
"The electrical embedded starter-generator will save space and provide the large amount of electrical power required by future fighters. Existing aircraft engines generate power through a gearbox underneath the engine, which drives a generator. In addition to adding moving parts and complexity, the space required outside the engine for the gearbox and generator makes the airframe larger, which is undesirable in a stealthy platform."
Phase two of this programme has now been adopted as part of Rolls-Royce's contribution to the Tempest programme.
As part of this journey, the company has been continuously developing its capabilities in the aerospace market, from gas turbine technologies through to integrated power and propulsion systems. The goal being to provide not only the thrust that propels an aircraft through the sky, but also the electrical power required for all the systems on board as well as managing all the resulting thermal loads.
Rolls-Royce is adapting to the reality that all future vehicles, whether on land, in the air or at sea will have significantly increased levels of electrification to power sensors, communications systems weapons, actuation systems and accessories, as well as the usual array of avionics.
The launch of phase one of the E2SG programme saw significant investment in the development of an integrated electrical facility – a unique test house where gas turbine engines can be physically connected to a DC electrical network.
The launch of the second phase of the project in 2017 saw the inclusion of a second electrical generator connected to the other spool of the engine. It also included an energy storage system in the electrical network and the ability to intelligently manage the supply of power between all these systems.
The two-spool mounted electrical machines allows, by combination of operation as either a motor or a generator, the production of a series of functional effects on the engine, including the transfer of power electrically between the two spools.
As part of the E2SG programme, Rolls-Royce is investigating the feasibility of using dual spool generation to influence the operability, responsiveness and efficiency of the engine. Another key technology under development is the Power Manager intelligent control system, which uses algorithms to make real time intelligent decisions about how to supply the current aircraft electrical demand while optimising other factors including engine efficiency to reduce fuel burn or engine temperature to extend component life.
Throughout the Tempest programme, Rolls-Royce will be continuing to mature the electrical technologies demonstrated by the E2SG programme, with a third phase of testing likely to include a novel thermal management system being integrated with the overall system, as well as more electric engine accessories.
The company also intends to showcase a full-scale demonstrator of an advanced power and propulsion system. There will be new technologies in all parts of the gas turbine, including twin spool embedded generation to higher power levels, an advanced thermal management system, an energy storage system tailored to the expected duty cycle of the future fighter and an intelligent power management system which will be able to optimise the performance of both the gas turbine and the power and thermal management system.
Press release issued by Rolls-Royce plc Defence Aerospace on January 9, 2020
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Todd South With the addition of artificial intelligence and machine learning, the aim is to make every soldier, regardless of job specialty, capable of identifying and knocking down threatening drones. While much of that mission used to reside mostly in the air defense community, those attacks can strike any infantry squad or tank battalion. The goal is to reduce cognitive burden and operator stress when dealing with an array of aerial threats that now plague units of any size, in any theater. “Everyone is counter-UAS,” said Col. Marc Pelini, division chief for capabilities and requirements at the Joint Counter-Unmanned Aircraft Systems Office, or JCO. Pelini and Maj. Gen. Sean Gainey, JCO director, who spoke Thursday at the virtual Association of the U.S. Army conference, told reporters that the original focus was on smaller Tier I and II threats. But that has now extended to Tier III threats, traditionally covered by the Army's air defense community, such as Avenger and Patriot missile batteries. Some of that work includes linking the larger threat detection to the smaller drones that now dot conflicts across the world, including the hot zone of the Armenia-Azerbaijan conflict. In June, the Department of Defense conducted a “down select” of existing or in-the-pipeline counter-drone systems from 40 to eight, as Military Times sister publication C4ISRNET reported at the time. That was an effort to reduce redundancy in the flood of counter drone programs taken on in the wake of a $700 million funding push in 2017 to get after problems posed by commercially available drones being used more frequently by violent extremist organizations such as the Islamic State to harass, attack and surveil U.S. and allied forces. Those choices, in the down select, included the following, also reported by C4ISRNET: Fixed/Semi-Fixed Systems * Fixed Site-Low, Slow, Small Unmanned Aircraft System Integrated Defeat System (FS-LIDS), sponsored by the Army * Negation of Improvised Non-State Joint Aerial-Threats (NINJA), sponsored by the Air Force * Counter-Remote Control Model Aircraft Integrated Air Defense Network (CORIAN), sponsored by the Navy Mounted/Mobile System * Light-Mobile Air Defense Integrated System (L-MADIS), sponsored by the Marine Corps Dismounted/Handheld Systems * Bal Chatri, sponsored by Special Operations Command * Dronebuster, no sponsor, commercial off-the-shelf capability * Smart Shooter, no sponsor, commercial off-the-shelf capability * Forward Area Air Defense Command and Control (FAAD-C2), sponsored by the Army (includes FAAD-C2 interoperable systems like the Air Force's Air Defense System Integrator (ADSI) and the Marine Corps' Multi-Environmental Domain Unmanned Systems Application Command and Control (MEDUSA C2)) The four areas evaluated to determine which systems stuck around for use or further development were effectiveness, integration, usability and sustainment, Gainey said Thursday. A kind of virtual open house with industry is planned for Oct. 30, in which JCO will evaluate what options are out there. Some of what they're learning is being gathered through a consortium, of sorts, that involves regular meetings between service branch representatives during monthly sessions at the two-star level, Gainey said. That goes into a real-time, updated “common threat library” that helps those in the field identify trends and changes that can be met across forces. They use those sessions to share what each component is seeing in theater as far as drone use and changes. But it's more than simple intelligence gathering, he said. They also form rapid response teams. "My operations team works with the warfighters, [the] intelligence community” and others, he said. They “triangulate” common problems with drones and send the rapid response teams to the area of operations most affected. https://www.armytimes.com/digital-show-dailies/ausa/2020/10/17/with-artificial-intelligence-every-soldier-is-a-counter-drone-operator/