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Briefs
Design

Anti-Phase Noise Suppression Rotor Technologies

Acoustic optimization for anti-phase asymmetric rotor.

Briefs
Propulsion

Experimental Assessment of Entanglement for an Unmanned Underwater Vehicle with an Open, Three-Bladed Propeller

This research evaluates the entanglement of an unmanned underwater vehicle (UUV) operating in marine vegetation common to...

Briefs
Motion Control

Reverse Vortex Ring (RVR)

This mechanism improves rotordynamic stability in turbomachinery.

Briefs
Unmanned Systems

Fabrication and Testing of High-Speed Single-Rotor and Compound-Rotor Systems

The X2 Technology Demonstrator recently achieved a level flight speed over 250 knots, proving the basic concept of the coaxial compound configuration.

Articles
Motion Control

Bipolar and Unipolar Drives for Stepper Motors: A Comparison

Learn the differences between bipolar and unipolar motors, their driving methods, and advantages and limitations.

Briefs
Sensors/Data Acquisition

Method Detects Onset of Destructive Oscillations in Aircraft Turbines

Early flutter detection will help in the development of safer and more eco-friendly aircraft turbines.

News
Materials

Model-Based Analysis of E-Motor Designs

In the auto industry’s shift toward electric vehicles (EV), permanent magnet motors (PMMs) are increasingly serving a variety of roles, including the vehicle’s traction motor and various...

Briefs
Mechanical & Fluid Systems

Hinge Design Helps Quadrotors Climb

The new hinge is the key to get loadbearing, large quadrotors to climb a few dozen feet in seconds.

Briefs
Materials

Material Moves Wind Turbine Blades Toward Recyclability

The material can be recycled, making renewable energy more sustainable while lowering costs in the process.

Briefs
Imaging

Keeping Drones Flying When a Motor Fails

Onboard cameras can be used to keep damaged quadcopters in the air and flying stably, even without GPS.

Briefs
Aerospace

Multirotor Aircraft Noise Reduction

NASA's phase-locked rotors reduce noise.

News
Electronics & Computers

Tula DMD Aims for More-Efficient E-Machines

The race is on among OEMs and suppliers to optimize the efficiency, performance and cost of electric-vehicle (EV) propulsion systems. Electric machines have moved to the front of the...

Briefs
Propulsion

Instrumentation for Fabrication and Testing of High-Speed Single-Rotor and Compound-Rotor Systems

To support the development of next-generation rotorcraft, precision data acquisition is required.

Articles
Mechanical & Fluid Systems

Advanced Assembly Solutions for the Airbus RACER Joined-Wing Configuration

The Rapid And Cost Effective Rotorcraft (RACER) demonstrator is being developed by Airbus Helicopters (AH) to further validate the compound rotorcraft configuration.

Application Briefs
Mechanical & Fluid Systems

Turbine Rotor Assembly Systems

RPI UK has installed two integrated rotor measurement and assembly platforms (iMAPs) at Atlanta-based Delta Airlines;

Briefs
Sensors/Data Acquisition

Neural Lander Uses AI to Land Drones Smoothly

Landing multi-rotor drones smoothly is difficult. Complex turbulence is created by the airflow from each rotor bouncing off the ground during a descent. This turbulence is not well understood nor is it easy to compensate for, particularly for autonomous drones. That is why takeoff and landing are...

Briefs
Mechanical & Fluid Systems

Hybrid Robot Flies, Creeps, and Leaps Off Buildings

There is great potential in using both drones and ground-based robots for situations like disaster response, but generally these platforms either fly or creep along the ground. The flying...

News
Weapons Systems

UAV Turbines Designs Purpose-Built Microturbine Engine for Class 3 and 4 UAVs

UAV Turbines, Inc. has developed a new microturbine, turboprop engine designed for defense and commercial Group 3 and 4 unmanned aerial vehicle (UAV) or...

News
Automotive

Sikorsky-Boeing’s FVL Contender Takes Flight

The Sikorsky-Boeing SB-1 Defiant (stylized as “SB>1 DEFIANT”) compound helicopter flew for the first time at Sikorsky’s West Palm Beach, Florida facility. Unlike current rotorcraft,...

Briefs
Sensors/Data Acquisition

Device for Providing Real-Time Rotorcraft Noise Abatement Information

Rotorcraft typically operate near the ground throughout the duration of the operation. For this reason, military rotorcraft are vulnerable to acoustic detection, and public acceptance of civil rotorcraft is limited by annoyance caused by rotor noise radiation. The purpose of...

Briefs
Aerospace

Modular, Multi-Mode-Propulsion, Unmanned Aerial Concept

NASA's Langley Research Center has developed an unmanned aerial vehicle concept for long-range, distributed aerial presence and delivery applications. This aircraft concept is capable...

News
Unmanned Systems

Sikorsky, Boeing Debut Future Vertical Lift Dual-Rotor Design with SB>1 DEFIANT Helicopter

Sikorsky, a Lockheed Martin company (NYSE:LMT), in Stratford, Connecticut, and Boeing Defense, Space & Security (NYSE:BA) in Berkeley, Missouri,...

Briefs
Electronics & Computers

A New Twist Makes Rotating Machinery More Efficient and Quieter

Derived from a design approach for a new wing known as PRANDTL-D, this technology achieves similar improvements for propellers and other rotating machinery.

Briefs
Test & Measurement

“Intelligent” Rotor Blades React Quickly to Changing Conditions

The giant rotor blades are one central part of a wind turbine. Researchers developed a rotor blade that makes more efficient use of large fluctuations in wind strength using...

Application Briefs
Aerospace

Hull Vibration Monitoring System

Brüel & Kjær
Nærum, Denmark
+45 7741 2000
For more info click here

BAE Systems has awarded Brüel & Kjær a Design Development Agreement to deliver a Hull Vibration Monitoring...

Briefs
Aerospace

External Aircraft Noise Reduction Liners

NASA Langley Research Center, in collaboration with Boeing and Lockheed Martin, has developed a new external acoustic liner for aircraft noise reduction. While the acoustic liner can be placed on any...

Briefs
Robotics, Automation & Control

Omnidirectional Mobile Robot with Two Moving Parts

SIMbot is an updated version of the ballbot, an elegantly simple robot whose tall, thin body moves on top of a sphere slightly smaller than a bowling ball. SIMbot features a motor with just...

Briefs
Materials

Spectrum Fatigue of 7075-T651 Aluminum Alloy Under Overloading and Underloading

Most structural members and machine components are subjected in service to cyclic loadings of varying amplitude. The variation in stress level follows either a...

Briefs
Medical

Complex Nanomachines Could Carry Pharmaceuticals, Detect Disease

UCLA nanoscience researchers have determined that a fluid that behaves similarly to water in our day-to-day lives becomes as heavy as honey when trapped in a nanocage of a...