MRO & Manufacturing
DLR Tests Rotor Technology to Reduce Helicopter Noise and Vibration
DLR’s STAR project uses piezoceramic actuators to reduce helicopter noise by 7 dB and vibrations by 50% in wind tunnel tests.
This article is based on an official press release from the German Aerospace Center (DLR).
Researchers at the German Aerospace Center (DLR), in collaboration with a consortium of international aerospace agencies, have successfully demonstrated a new rotor technology capable of significantly reducing helicopter noise and vibration. The breakthrough, achieved under the Smart Twisting Active Rotor (STAR) project, utilizes “artificial muscles” to actively twist rotor blades during flight without the need for heavy mechanical components.
According to the DLR, wind tunnel tests conducted in late 2025 confirmed that the system reduces noise during the critical landing phase by up to 7 decibels (dB) and cuts hub vibrations by more than 50 percent. These results mark a significant step forward for rotorcraft engineering, particularly for the emerging Urban Air Mobility (UAM) sector where noise pollution is a primary barrier to adoption.
Traditional helicopter rotors rely on complex mechanical linkages, swashplates, and hydraulic systems to change blade pitch. While effective for basic flight control, these systems are often too slow or heavy to counteract the rapid, complex aerodynamic interactions that generate the characteristic “whop-whop” sound of a helicopter, known as Blade-Vortex Interaction (BVI).
The STAR project takes a fundamentally different approach. Instead of mechanical flaps, the rotor blades are equipped with piezoceramic actuators integrated directly into the blade skin. When an electrical voltage is applied, these actuators expand or contract, functioning like artificial muscles to twist the blade.
The DLR reports that this system allows for both static and dynamic twisting. Static twisting adjusts the blade for general flight regimes, such as hovering or cruising. However, the system’s true innovation lies in its dynamic capabilities. The actuators can twist the blades hundreds of times per second, allowing the rotor to adapt instantaneously to changing airflow and neutralize the aerodynamic shocks that cause noise and vibration.
“The special thing about this approach is that the active twisting of a rotor blade requires no mechanical components and is only minimally affected by the centrifugal forces acting on the rotor blades.”
, Berend Gerdes van der Wall, Project Manager at DLR Institute of Flight Systems
The technology was validated during a three-week campaign at the Large Low-Speed Facility (LLF) of the German-Dutch Wind Tunnels (DNW) in the Netherlands. The team utilized a four-meter diameter model rotor, a 40 percent scale model of a BO 105 helicopter rotor, to gather acoustic and aerodynamic data. Data collected during the tests revealed a noise reduction of up to 7 dB during descent. In acoustic terms, a reduction of this magnitude corresponds to cutting the perceived noise intensity by more than half for observers on the ground. This reduction is critical for operations over populated areas, where landing noise is often the most disruptive phase of flight.
In addition to acoustic benefits, the system demonstrated a massive improvement in ride quality. Vibrations acting on the rotor hub were reduced by over 50 percent. According to the project data, this reduction not only improves passenger comfort but also decreases mechanical stress on the aircraft, potentially extending the lifespan of critical components.
“The results show that efficiency increased while noise and vibration were significantly reduced. During the measurement campaign, we were able to successfully test our concept in a realistic environment.”
, Berend Gerdes van der Wall, DLR
While led by DLR, the STAR project represents a major global effort in aerospace research. The technology was developed and tested with contributions from several leading organizations, ensuring the data is validated across different engineering standards.
The consortium includes:
The success of the STAR project has implications far beyond traditional helicopters. As the aviation industry pivots toward eVTOL vehicles for air taxis, noise remains the single largest hurdle to regulations approval and public acceptance. A 7 dB reduction is not merely an incremental improvement; it could be the difference between a vertiport being approved in a city center or being pushed to the outskirts.
Furthermore, the elimination of mechanical parts in favor of solid-state piezoceramic actuators aligns with the industry’s push for lower maintenance costs. If this technology scales effectively from the 40 percent model to full-size aircraft, we expect to see “active twisting” blades become a standard feature in next-generation military and civilian rotorcraft.
What is the primary benefit of the STAR rotor system? How does the blade twist without mechanics? Who was involved in the testing?
DLR Successfully Tests “Artificial Muscles” to Slash Helicopters Noise and Vibration
The STAR Project: How Active Twisting Works
Static and Dynamic Control
Wind Tunnel Results: Efficiency and Comfort
Significant Noise Reduction
Vibration Dampening
International Collaboration
AirPro News Analysis
Frequently Asked Questions
The system reduces helicopter noise by up to 7 dB and vibrations by over 50 percent without using heavy mechanical parts.
It uses piezoceramic actuators embedded in the blade skin. These “artificial muscles” deform when voltage is applied, twisting the blade structure.
The project was led by DLR (Germany) with partners including NASA, the U.S. Army, ONERA, JAXA, KARI, Konkuk University, and DNW.
Sources
Photo Credit: DLR
MRO & Manufacturing
Satair and Joramco Extend 25-Year Partnership at MRO Middle East 2026
Satair and Joramco renew their 25-year supply agreement at MRO Middle East 2026, supporting Joramco’s maintenance operations and new contracts.
This article is based on an official press release from Satair and additional industry reporting regarding MRO Middle East 2026.
At the MRO Middle East 2026 exhibition in Dubai, Satair, an Airbus Services company, and Joramco (Jordan Aircraft Maintenance Limited) officially announced the renewal of their long-standing Consumables and Expendables Supply Agreement. The deal marks the continuation of a strategic partnership that has spanned more than a quarter of a century, reinforcing the critical role of integrated supply chains in the growing Middle Eastern aviation maintenance sector.
According to the announcement, the renewed agreement is designed to secure a consistent flow of essential spare parts for Joramco’s base maintenance operations in Amman, Jordan. By locking in this supply chain solution, Joramco aims to minimize “Aircraft on Ground” (AOG) risks and reduce the complexity of material management for its expanding customer base.
The partnership between Satair and Joramco is one of the most enduring in the region. For over 25 years, Satair has served as a primary provider of consumables and expendables, high-volume, low-cost parts essential for routine maintenance, to the Jordan-based MRO provider.
In the official release, the companies highlighted the operational benefits of the extension. The agreement allows Joramco to leverage Satair’s global distribution network, ensuring that parts are available precisely when needed. This “just-in-time” capability is vital for MROs (Maintenance, Repair, and Overhaul providers) striving to offer competitive turnaround times to airlines.
A primary focus of the renewal is the mitigation of supply chain disruptions. By outsourcing the management of consumables to Satair, Joramco can focus its internal resources on heavy maintenance and engineering tasks rather than logistics. The agreement reportedly covers a comprehensive range of Airbus and Boeing fleet requirements, aligning with Joramco’s diverse capabilities.
“This continued partnership with Satair ensures we have the right parts at the right time, allowing us to deliver superior turnaround times to our global customers.”
, Statement attributed to Joramco leadership regarding the renewal
The renewal comes amidst a flurry of activity at MRO Middle East 2026, where both companies have announced significant independent expansions. The event, held on February 4–5, 2026, has served as a platform for major industry shifts in the region. According to industry reporting from the event, Joramco has also secured a major five-year heavy maintenance agreement with the German leisure carrier Condor. This deal will see Joramco performing base maintenance on Condor’s entire Airbus fleet, including the A320ceo, A320neo, and A330neo. Additionally, Joramco celebrated the first graduates of its Structured On-the-Job Training (SOJT) program, a move aimed at addressing the global shortage of skilled aviation technicians.
Simultaneously, Satair has expanded its footprint in the sustainability sector. Reports from the event indicate Satair signed a Memorandum of Understanding (MoU) with GAMECO (Guangzhou Aircraft Maintenance Engineering Co.) to enter the Used Serviceable Material (USM) market, addressing the rising demand for cost-effective and sustainable parts solutions.
The renewal of the Satair-Joramco agreement highlights a critical trend in the post-2025 aviation landscape: the prioritization of supply chain resilience. In an era where global parts shortages have frequently grounded fleets, MRO providers are increasingly moving toward long-term, integrated agreements with major distributors rather than relying on spot-market purchasing.
Furthermore, the Middle East’s trajectory as a global MRO hub is evident in these announcements. Joramco’s ability to secure European contracts like the Condor deal, backed by a robust supply chain from Satair, suggests that regional players are successfully competing on a global scale by combining geographic advantages with high-grade logistical reliability.
Satair and Joramco Extend 25-Year Supply Chain Partnership at MRO Middle East 2026
Strengthening a Quarter-Century Alliance
Operational Efficiency and AOG Reduction
Broader Context: MRO Middle East 2026 Developments
AirPro News Analysis
Frequently Asked Questions
Sources
Photo Credit: Satair
MRO & Manufacturing
Joramco Renews Maintenance Agreement with mas Cargo Airline for 2026
Joramco extends its maintenance contract with Mexican cargo airline mas for heavy checks on Airbus A330 freighters throughout 2026 at its Amman facility.
This article is based on an official press release from Joramco.
Joramco, the Amman-based aircraft maintenance, repair, and overhaul (MRO) facility and engineering arm of Dubai Aerospace Enterprise (DAE), has officially announced the renewal of its maintenance agreement with mas (formerly MasAir), a prominent Mexican cargo airline. The agreement was finalized and signed during the MRO Middle East 2026 exhibition in Dubai, marking a continuation of the strategic partnership between the two entities.
Under the terms of the renewed contract, Joramco will perform heavy base maintenance checks on the mas fleet of Airbus A330 freighters. The work is scheduled to take place throughout 2026 at Joramco’s facility at Queen Alia International Airport in Amman, Jordan. This announcement underscores the MRO provider’s increasing traction in the global cargo sector and its ability to secure recurring business from international carriers outside its traditional regional stronghold.
According to the company’s announcement, the new deal focuses specifically on heavy base maintenance, often referred to as C-checks, for the carrier’s Airbus A330 fleet. These checks are critical for ensuring the continued airworthiness and operational reliability of the freighter aircraft, which are essential to mas’s global logistics network.
This renewal follows a successful initial collaboration established relatively recently. Joramco and mas first formalized their partnerships in October 2025 at the MRO Europe exhibition in London. That initial agreement covered maintenance checks that began in December 2025. The rapid renewal, signed just four months later, suggests a successful execution of the initial checks and a deepening of the business relationship.
In a statement regarding the renewal, Joramco’s leadership highlighted the significance of the repeat business.
“We are pleased to welcome more aircraft from mas at Joramco. This agreement reaffirms Joramco’s position as a trusted Global MRO provider of choice.”
, Adam Voss, CEO of Joramco
The agreement with mas aligns with Joramco’s broader strategy to expand its global footprint. By securing a renewal with a Latin American carrier, the Jordan-based MRO is demonstrating its competitiveness on a global scale, attracting airframes from the Americas to the Middle-East for heavy maintenance. The timing of this renewal is notable within the wider context of the MRO industry’s capacity constraints. In late 2025, Joramco inaugurated “Hangar 7,” a significant infrastructure expansion that reportedly increased its capacity to 22 parallel maintenance lines. This expansion appears to be paying dividends, allowing the facility to accommodate the “more aircraft” referenced by CEO Adam Voss.
Furthermore, the cargo market remains a demanding sector requiring high asset utilization. For a specialized Cargo-Aircraft airline like mas, which operates a modernizing fleet of Airbus A330 Passenger-to-Freighter (P2F) aircraft, securing reliable MRO slots is a strategic priority. The quick transition from an initial contract in late 2025 to a full-year renewal for 2026 indicates that Joramco has successfully met the technical and turnaround time requirements demanded by the cargo carrier.
Joramco: A subsidiary of Dubai Aerospace Enterprise (DAE), Joramco has operated for over 60 years. Based in Amman, Jordan, it provides airframe maintenance, repair, and overhaul services for Airbus, Boeing, and Embraer aircraft.
mas: Headquartered in Mexico City, mas (formerly MasAir) is a specialized cargo airline operating scheduled and charter freight services across the Americas, Europe, and Asia. The airline has been actively expanding its capacity with Airbus A330 freighters to support its international network.
Sources:
Joramco Extends Maintenance Partnership with mas Cargo Airline for 2026
Scope of the Renewed Agreement
Strategic Context and Capacity Expansion
AirPro News Analysis
About the Companies
Photo Credit: Joramco
MRO & Manufacturing
Liebherr and Röder Expand MRO for Embraer E-Jet Landing Gear
Liebherr-Aerospace and Röder Präzision deepen cooperation to overhaul main landing gear for Embraer E-Jet E1 family, enhancing capacity and reducing turnaround times.
This article is based on an official press release from Liebherr-Aerospace.
Liebherr-Aerospace Lindenberg GmbH and Röder Präzision GmbH have officially announced a significant expansion of their MRO cooperation. According to a joint statement released in early February 2026, the new agreement tasks Röder Präzision with the overhaul of structural components for the main landing gear of the Embraer E-Jet E1 family. This move builds upon a pre-existing partnership that was previously limited to nose landing gear components.
The deepened collaboration comes as the global aviation industry faces rising demand for maintenance capacity. By integrating Röder Präzision’s Egelsbach facility into the supply chain for main landing gear structures, Liebherr aims to increase industrial capacity and reduce turnaround times (TAT) for operators of the E170, E175, E190, and E195 aircraft. The agreement is effective immediately, with operations expected to scale up throughout 2026.
As the Original Equipment Manufacturer (OEM) for the E-Jet landing gear system, Liebherr-Aerospace retains authority over the final product, while leveraging Röder’s specialized capabilities to handle the volume of structural repairs required by the aging global fleet.
The agreement establishes a clear division of responsibilities designed to optimize the overhaul process. While Röder Präzision takes on the industrial heavy lifting for individual components, Liebherr maintains control over the critical airworthiness certification and system integration.
Liebherr’s facility in Lindenberg remains the center of competence for the program. The OEM is responsible for the “top-level” processes, which include:
Röder Präzision, an established MRO provider, will handle the detailed industrial overhaul of the structural parts. Their scope includes:
According to the announcement, Röder has invested in expanded machinery and specific employee qualification programs to meet the technical demands of the main landing gear, which involves larger and more complex components than the nose gear they previously handled.
The timing of this agreement is driven by the lifecycle of the Embraer E-Jet E1 fleet. The aircraft family, which entered service in the mid-2000s, is currently experiencing a “bow wave” of heavy maintenance requirements.
Landing gear overhaul intervals for the E-Jet are typically set at 10 years or 20,000 flight cycles for the E190/195, and 12 years or 30,000 flight cycles for the E170/175. With a significant portion of the global fleet reaching these milestones simultaneously, the demand for overhaul slots has surged. By utilizing a domestic German supply chain, Liebherr intends to minimize logistics costs and shipping times, offering a faster alternative to non-European vendors. “This cooperation is a win-win situation. We are covering global needs that are sure to arise in the near future. At the same time, we can offer our customers greater capacities and faster turnaround times thanks to short delivery routes.”
— Gerd Heinzelmann, Managing Director, Liebherr-Aerospace Lindenberg GmbH
Bastian Heberer, CEO of the Röder Group, emphasized that the deal is built on a foundation of trust established during their previous work on nose landing gear.
“We are very pleased to be able to deepen the long-standing, trust-based partnership with Liebherr with this agreement. With our targeted investments in machinery and the qualification of our employees, we are a reliable partner for Liebherr.”
— Bastian Heberer, CEO, Röder Group
This agreement highlights a growing trend in the MRO sector where OEMs are increasingly relying on trusted third-party providers to manage capacity constraints. While OEMs like Liebherr hold the intellectual property and certification authority, the sheer volume of mature fleets, like the E-Jet E1, requires more industrial throughput than many OEMs can manage alone without expanding their own physical footprint.
By outsourcing the component-level repair work to Röder while keeping the high-value assembly and certification in-house, Liebherr effectively creates a “hybrid” MRO model. This allows them to scale capacity rapidly in response to the current market surge without bearing the full capital expenditure of building new component repair shops. For operators, the promise of a “domestic solution” within Germany suggests a focus on supply chain resilience, reducing the risk of delays associated with cross-border logistics.
What aircraft are covered by this agreement? When does the new cooperation begin? Does Röder Präzision certify the landing gear? Sources: Liebherr-Aerospace
Liebherr-Aerospace and Röder Präzision Expand Partnership for Embraer E-Jet Landing Gear Overhaul
Operational Division of Labor
Liebherr-Aerospace (Lindenberg)
Röder Präzision (Egelsbach)
Strategic Context: The E-Jet “Overhaul Wave”
AirPro News Analysis
Frequently Asked Questions
The agreement covers the Embraer E-Jet E1 family, which includes the E170, E175, E190, and E195 models.
The cooperation is effective immediately, with the volume of overhaul work expected to scale up successively throughout 2026.
No. Röder performs the overhaul of structural components, but Liebherr-Aerospace retains responsibility for final testing and airworthiness certification.
Photo Credit: Liebherr
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