Aerospace

New endowed professorship in space policy and law to expand frontiers of global collaboration

Emily Adams — Tue, 24 Jun 2025 14:06:32 +0000

New endowed professorship in space policy and law to expand frontiers of global collaboration Emily Adams Tue, 06/24/2025 - 08:06

Through a generous investment in the future of space governance, ��ϳԹ� donors Dale and Patricia Hatfield have given $2.5 million to establish the Hatfield Endowed Professorship in Space Policy & Law.

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��ϳԹ� leading 10-university uncrewed aerial systems communications project

Jeff Zehnder — Thu, 10 Apr 2025 21:15:44 +0000

��ϳԹ� leading 10-university uncrewed aerial systems communications project Jeff Zehnder Thu, 04/10/2025 - 15:15

Jeff Zehnder

Eric Frew is heading a major project to improve drone communications in anticipation of a future when autonomous aircraft regularly whizz overhead for everything from product deliveries to emergency response.

A professor in the Ann and H.J. Smead Department of Aerospace Engineering Sciences at the ��ϳԹ�, Frew is the principal investigator of an $8 million, four-year NASA University Leadership Initiative grant to ensure safe and assured operation of commercial autonomous aircraft in populated areas.

“These are complex scenarios -- a drone flying from Denver International Airport to Boulder to drop off a package or using drones to monitor wildfires. Consider the benefit if the Boulder Fire Department could dispatch a drone the moment there’s an incident t so it gets there before police or fire crews,” Frew said.

Communications with consumer-grade quad copters are fairly standardized, but Frew’s team will be studying a much more complex problem – drones that navigate miles from their operator across challenging terrain where line-of-sight communication with a base station is no longer possible.

In such cases, cellular networks are the most likely solution for controlling the drone, but that presents unique challenges.

“Wireless communication is hard,” Frew said. “We’ve all had cell phone signals drop out. That’s fine on the phone with a family member. But if you’re commanding a flying drone, that’s a problem.”

The project team comprises some of the best minds in drones, radio signaling and computer science across 10 universities and colleges; the Center for Autonomous Air Mobility and Sensing research partnership; Boeing subsidiary Aurora Flight Sciences; and the nonprofit Charles Stark Draper Laboratory.

Ismail Guvenc is a partner on the project. An electrical engineering professor at North Carolina State University, he leads a major aerial experimentation laboratory that will offer the team opportunities to develop and test uncrewed aerial system concepts in a real-world outdoor testbed.

“This is advancing the state of the art in an area of critical and timely significance for the United States. We’ll be modeling the behavior of agents, interference, and data in hybrid airborne-terrestrial networks and their impact on the overall performance of the communication network. We will also be supporting real-world experiments and testing needs of project partners at Aerial Experimentation and Research Platform for Advanced Wireless (AERPAW),” Guvenc said.

Part of the research will focus on designing flight corridors that ensure continued communication. In the case of a trip from DIA to Boulder, that could mean designing a pathway that stays close to cell towers, rather than following the most direct route. Another possibility is using multiple drones as a mesh relay network.

“The transmission would multi-hop back through each drone. We can’t control the ground communications, but we can exploit our own,” Frew said.

Relay networks will be particularly important in sparsely populated areas with fewer cell towers, like during wildfire response in the Rocky Mountains.

This is part of a larger vision of how our work can help society. The goal is to provide tools to industry to understand and exploit the dynamic communications environment in urban, suburban, rural and remote areas.” - Eric Frew

“How do we organize stakeholders in that environment? We want to be able to manage team formations, routing and planning so we can work in a hybrid communications system that alternates between air-to-air and air-to-ground communications seamlessly,” Frew said.

Managing that complex interplay will be an area of study for multiple partners on the project, including Philip Brown, an assistant professor in computer science at the University of Colorado Colorado Springs. His work focuses on using game theory to inform the design of networked control systems.

“My lab studies the way that network structure impacts team performance for loosely connected teams, which is what a group of drones are in this case. We’re evaluating and predicting the performance of network structures, and also using network structures to inform the decisions made by individual autonomous aircraft,” Brown said.

A key objective of the project is technology transfer to industry. While some grants focus more on early stage research, Frew emphasized their plan to develop software and data to assist business and government going forward.

“This is part of a larger vision of how our work can help society,” Frew said. “The goal is to provide tools to industry to understand and exploit the dynamic communications environment in urban, suburban, rural and remote areas.”

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PhD alum spent 45 days isolated in space. Well, kind of

Alexander James Servantez — Wed, 02 Apr 2025 20:35:17 +0000

PhD alum spent 45 days isolated in space. Well, kind of Alexander Jame… Wed, 04/02/2025 - 14:35

Robert Wilson (PhDMechEngr'20) spent 45 days locked inside NASA’s HERA facility, a high-tech simulation designed to test the limits of human endurance in deep space. His mission could help shape the future of space exploration—and life back on Earth.

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Aircrafts of the future: Boosting aerodynamic performance by engineered surface vibrations

Jeff Zehnder — Mon, 24 Mar 2025 16:34:49 +0000

Aircrafts of the future: Boosting aerodynamic performance by engineered surface vibrations Jeff Zehnder Mon, 03/24/2025 - 10:34

Jeff Zehnder

“This is probably the most radical conceptual advancement for airplanes since the replacement of propellers with jets.” – M.I. Hussein

Mahmoud Hussein is not pulling punches about the potential impact of a major aerospace materials research project.

As the principal investigator of a $7.5 million, five-year Department of Defense Office of Naval Research (ONR) Multidisciplinary University Research Initiative (MURI), Hussein is leading an effort to reshape the fundamental character of fluid-structure interactions to reduce drag on high-speed aerospace vehicles—the focus of the project.

“Since the dawn of aviation, aircraft design has been based on the premise of shaping the surface of the vehicle to create lift and minimize drag. Our team is pursuing a new paradigm where the phononic properties, or intrinsic vibrations, of a surface or subsurface provide an additional pathway to interact with the airflow, to enhance the vehicle performance in an unprecedented manner,” said Hussein, the Alvah and Harriet Hovlid Professor in the Ann and H.J. Smead Department of Aerospace Engineering Sciences at the ��ϳԹ�.

Hussein also has a courtesy appointment in the Department of Physics and an affiliation with the Materials Science and Engineering Program.

MURI Partners

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Mahmoud I. Hussein
Professor & Principal Investigator
Armin Kianfar
Post-Doctoral Associate
Adam Harris
PhD Student

University of Maryland

Christoph Brehm
Associate Professor

Johns Hopkins University

Kevin Hemker
Professor

Purdue University

Joseph Jewell
Associate Professor

Applied Physics Laboratory

Keith Caruso
Principal Staff Engineer
Ken Kane
Researcher

University of Kentucky

Alexandre Martin
Professor

Case Western Reserve University

Bryan Schmidt
Assistant Professor

Office of Naval Research (Program Directors)

Eric Marineau
Eric Wuchina

Phononic Subsurfaces

Turbulent airflow is detrimental to the fuel economy and the surface temperature of aircrafts as they soar through the atmosphere. This research aims to mitigate the transition to turbulence using phononic subsurfaces (PSubs) – synthetic designed materials affixed beneath the surface of a wing or vehicle body that passively manipulate small-amplitude vibrations, and by extension flow fluctuations, point-by-point along the surface.

Turbulence and Fuel Economy

Passenger planes consume over 10,000 gallons of jet fuel on a single cross-country trip, so improvements in fuel economy could lead to big savings for airlines. The potential in hypersonic crafts is even more dramatic.

Hypersonic vehicles travel at velocities at least five times the speed of sound. The turbulence that results from such speeds causes the surface of the vehicles to heat up to thousands of degrees, requiring they be constructed of exotic, expensive materials.

“By introducing a phononic subsurface to precisely shape the vibrations along the surface, we can alter the way the air interacts with the vehicle such that we ultimately don’t need to come up with exceedingly high-temperature-resistant materials,” Hussein said. “We’re passively manipulating instabilities in air flow in a manner that is favorable in the boundary layer where the vehicle meets the surrounding air.”

2015 to Today

The concept of PSubs was discovered by Hussein. The work began from a collaboration over 15 years ago between Hussein and then ��ϳԹ� Professor Sedat Biringen, who died in 2020. As leaders in the newly-born research area of phononics and the longstanding field of fluid dynamics, respectively, they worked together to theoretically demonstrate–for the first time–a way to manipulate phonons to improve the efficiency of flight, with tremendous potential for the aerospace industry and prospects for application to water vessels as well.

Recently Hussein gathered a team of experts from across the country to take the concept of PSubs to the next level with this hypersonics MURI grant. Over the duration of the project, the group will develop high-fidelity models and fabricate functional prototypes to effectively characterize and demonstrate the technology in high-speed wind tunnels.

“We’re most confident about this endeavor, because the idea is rooted in fundamental science marrying–in quite a sophisticated fashion–fluid dynamics with condensed matter physics as well as with the emerging field of elastic metamaterials,” Hussein said.

“This is probably the most radical conceptual advancement for airplanes since the replacement of propellers with jets.” – Mahmoud Hussein is not pulling punches about the potential impact of a major aerospace materials research project.

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Aerospace

New endowed professorship in space policy and law to expand frontiers of global collaboration

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���ϳԹ� leading 10-university uncrewed aerial systems communications project

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PhD alum spent 45 days isolated in space. Well, kind of

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Aircrafts of the future: Boosting aerodynamic performance by engineered surface vibrations

MURI Partners

Phononic Subsurfaces

Turbulence and Fuel Economy

2015 to Today

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��ϳԹ� leading 10-university uncrewed aerial systems communications project