Defense

May 12, 2014

New software assists with next generation of advanced aircraft

Tags:
Deidre Ortiz
Arnold AFB, Tenn.

In the diagram, the first image is of a rotor fan surface geometry that was the result of the laser scan. The second image shows computational fluid dynamics mesh that was generated from the surface and then used to produce the CFD results. The third image shows a portion of the CFD flowfield and the pressure of the air as it goes through the fan.

New software is available to aid in providing acquisition support for Next Generation of Advanced Aircraft.

The CREATE program (Computational Research and Engineering For Acquisition Tools and Environments), an initiative funded by the Office of Secretary of Defense High Performance Computing†Modernization, is being used to develop next generation computational engineering tool sets for acquisition program engineers. The tools allow program engineers to take advantage of the growth in supercomputer power.

Tracy Donegan, supervisor in the Aerospace Testing Alliance†Integrated Test and Evaluation Department, said the CREATE program’s mission is to improve†Department†of Defense†acquisition processes by developing and deploying HPC-based computational engineering tools.

These tools include production-quality design and analysis software that’s both adaptable and maintainable, which will be beneficial in fully supporting initial design efforts for future tactical aircraft systems.

“One facet of the CREATE program is to initiate implementation of the emerging tools for a current acquisition application in order to assist the direction of the software development and test their suitability to realistic applications,” Donegan said.
The CREATE program is being applied locally at Arnold Engineering Development Complex†for the modeling of the TF34-GE-100A three dimensional full annulus fan within the nacelle, or its enclosure, for an accurate simulation of the inlet flow. This replicates the inlet flow distortion and†the fan response to the flow, as well as provides an analysis tool to assess fan operability.

Donegan explained that in order to model the full annulus fan, a detailed geometric representation was required.

“A single rotor blade for the TF-34 engine, which is the engine used in the A-10 close-air-support aircraft, was located at AEDC and scanned at the model shop using a local laser scanner,” Donegan said. “The set of rotor blade surface points generated from the laser scan was used by the design group in conjunction with engineering drawings to create a CAD model of the rotor blade for CFD†[computational fluid dynamics] analysis purposes.

“The engineering drawings on their own were for inspection purposes and did not contain sufficient information to model a blade from scratch,” she continued. “However, combined with a laser scan, enough information was available to model an entire blade array based on the single blade definition. The blade was incorporated into a rotor assembly and CFD solutions have been generated.”

A stator blade, the stationary blade of the fan, was also located, and the same process was used to complete the fan model.




All of this week's top headlines to your email every Friday.


 
 

 

President proclaims Memorial Day as ‘Day of Prayer’

President Barack Obama May 22 saluted the service and sacrifices of America’s military members–past and present–and proclaimed Memorial Day, May 25, 2015, “as a day of prayer for permanent peace, and I designate the hour beginning in each locality at 11 a.m. of that day as a time during which people may unite in prayer....
 
 

Air Force leaders’ Memorial Day message

Secretary of the Air Force Deborah Lee James and Air Force Chief of Staff Gen. Mark A. Welsh III send the following Memorial Day message to the Airmen of the Air Force and their families: To the Airmen of the United States Air Force and their Families: On Memorial Day, Americans pause in solemn remembrance...
 
 

Headlines May 22, 2015

News: Second Marine killed in Hawaii Osprey crash identified - Marine Corps officials have identified the second Marine to die as a result of the May 17 MV-22B Osprey crash as Lance Cpl. Matthew J. Determan of Maricopa, Ariz.   Business: Israel defense exports plunge to seven-year low - Israeli defense sales last year plunged to their...
 

 

News Briefs May 22, 2015

Ukrainian officer hit with third charge in Russia A third charge has been filed against a Ukrainian military officer who has been behind bars in Moscow for nearly a year over the deaths of two Russian journalists in Ukraine. Nadezhda Savchenko, who worked as a spotter for Ukrainian troops fighting separatist rebels in eastern Ukraine,...
 
 
Army photograph by C. Todd Lopez

Smart-mortar will help Soldiers more effectively hit targets

Army photograph by C. Todd Lopez Nick Baldwin and Evan Young, researchers with the Armament Research Development and Engineering Center at Picatinny Arsenal, Pennsylvania, discuss the 120mm Guided Enhanced Fragmentation Mortar ...
 
 

Air Force assigns new chief scientist

The Air Force announced the service’s new chief scientist to serve as a science and technology adviser to the secretary of the Air Force and the chief of staff of the Air Force, May 21. Dr. Greg Zacharias will be the 35th chief scientist and is ready to “dive in” to his new role. “I...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>