Tech Briefs

Unmanned Aerial Systems Traffic Management

The traffic-management system supports UAS civilian applications that operate at lower altitudes.NASA has developed a traffic management system for Unmanned Aerial Systems (UASs) to maintain safe and efficient UAS operations. This novel technology enables the growth in civilian applications of UAS operations at lower altitudes by developing a UAS Traffic Management (UTM) system. There are a number of applications of UAS that includes goods and services delivery in urban, difficult terrain, and rural areas; imaging and surveillance for agriculture; and utility management. To enable significant commercial use of UASs within lower-altitude airspace and airspace that does not interfere with regular National Airspace System (NAS) operations, a UTM system is required. UTM is essential to enable accelerated applications of UASs. UTM will accommodate and support all types of UAS operations, ranging from disposable with minimalistic avionics capabilities, to highly capable UASs.

Posted in: Briefs, Aeronautics, Aerospace

Read More >>

System and Method for Dynamic Aeroelastic Control

Innovators at NASA’s Armstrong Flight Research Center are developing a collection of algorithms that can accurately determine the structural state of an aircraft. This work is in response to new airframe designs that save weight — and thereby improve fuel efficiency — by removing stiffness in the wings and incorporating lighter materials such as composites.

Posted in: Briefs, Aeronautics, Aerospace

Read More >>

Active Aircraft Pylon Noise Control System

This technology can be used in commercial aircraft, business jets, and UAVs.This technology is a new type of aircraft pylon design for noise control. A pylon connects the engine to the airframe of an aircraft. This design uses air passing through the pylon to actively disrupt the jet engine exhaust stream after it exits the engine, disrupting and redistributing the axial and azimuthal distributed sources of jet noise from the aircraft.

Posted in: Briefs, Aeronautics, Aerospace

Read More >>

Supporting Test Aircraft with Lift Airbags

Aircraft lift equipment can be used for safer, more cost-effective wing strain gage load calibration.Innovators at NASA’s Armstrong Flight Research Center have developed a method of using aircraft lift airbags to support test aircraft during wing strain gage load calibration. In calibration testing, a set of known loads is applied to the wing, and the loads and strain gage responses are then recorded. Multigage shear, bending, and torque load equations can then be derived from linear regression analysis of the data. The method aims to address challenging strain measurement conditions present in certain aircraft with particular landing gear geometries. For example, the Gulfstream III test aircraft has main landing gear attached to the inboard wing at the rear spar. In aircraft with this type of landing gear geometry, the main gear load reaction into the wing changes as the applied test load changes, corrupting the test data and compromising the accuracy of the load equations.

Posted in: Briefs, Aeronautics, Aerospace

Read More >>

Enhanced Aircraft State Display for Improved Situation Awareness of Flight Envelope Limitations

In the case of an aircraft system failure such as control surface or engine failure, an aircraft’s flight envelope may change. Notifying the pilots of these changes may improve situational awareness and, hence, increase flight safety because pilots will have additional knowledge about maneuver limitations to stay safely within the flight envelope. Also, notifying the pilots of where the vehicle is relative to maneuver limitations may further increase safety by assuring pilot’s knowledge of the aircraft state.

Posted in: Briefs, Aeronautics, Aerospace

Read More >>

Film Cooled Surface

This cooling technique increases the efficiency of turbine blades.Turbine film cooling flows typically are subject to jet detachment and reduced cooling effectiveness for high blowing rates. Current concepts to improve jet attachment involve impractical or overly complex hole designs due to manufacturing or durability constraints. Novel film cooling concepts from NASA’s Glenn Research Center involve creating a V-shaped recess on the flow surface of a turbine blade to induce fluid, temperature, or shedding effects; threading turbine film cooling holes with helical channels or grooves (much like the threads of a screw) for the purpose of producing a swirling flow of cooling fluid exiting the film cooling hole; and pairing the threaded holes with holes that have an opposite direction of swirl.

Posted in: Briefs, Aeronautics, Aerospace, Propulsion

Read More >>

Aeronautical Data Link and Radar Simulator (ADRS)

Air traffic management research needs to adequately address all players, including flight crews, air traffic controllers/managers, and airline dispatchers. Interactions between the different stakeholders are crucial elements for the viability of a given concept. A simulation capable of addressing this type of distributed decision-making needs to meet several requirements in terms of fidelity, operator proficiency, and number of participants. Most research facilities and laboratories can provide a sufficient fidelity for one particular aspect, but lack in the other aspects because of budget, personnel, and proprietary constraints.

Posted in: Briefs, Aeronautics, Aerospace

Read More >>

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.