SBIR-STTR Award

Store Unsteady Aerodynamic Loads Measurement Technology
Award last edited on: 5/23/2011

Sponsored Program
SBIR
Awarding Agency
DOD : AF
Total Award Amount
$99,951
Award Phase
1
Solicitation Topic Code
AF093-214
Principal Investigator
Alton J Reich

Company Information

Streamline Automation LLC (AKA: C3 Propulsion)

3100 Fresh Way SW
Huntsville, AL 35805
Location: Single
Congr. District: 05
County: Madison

Phase I

Contract Number: ----------
Start Date: ----    Completed: ----
Phase I year
2010
Phase I Amount
$99,951
Until recently, the stores released from supersonic aircraft have been carried on external pylons. This locates the initial release point of the store some distance from the aircraft, and the release sequence can be designed to encourage the store to move away from the aircraft after it is released. Aircraft that have been recently developed have internally carried stores. Internally carried stores are greatly impacted by unsteady flow upon release, and are susceptible to “fly back”, a phenomenon in which the trajectory of the store brings it into contact with the aircraft or another store. The current testing technique utilized by AEDC to analyze the aerodynamic loads on the store utilizes the combination of a balance integrated into the scale model store and a Captive Trajectory Support system that facilitates the capture of aerodynamic data and the movement of the model store through it''s trajectory as it moves away from the aircraft. Improvements are needed to the CTS system that will enable accurate, transient load data to be captured during testing. This will enable the transient loads to be taken into account when the store trajectory is computed, and will improve the accuracy of store separation test results. Streamline Automation proposes an innovative approach to upgrade the balance data acquisition system to increase the data capture rate, the addition of instrumentation that will aid in separating unsteady aerodynamic force information from structural vibrations, and a data processing framework that will fuse the data and extract the unsteady aerodynamic loads. BENEFIT

Keywords:
Experimental Methods, Weapons Integration, Wind Tunnel Test, High Frequency Instrumentation, Unsteady Aerodynamics, Captive Trajectory Support

Phase II

Contract Number: ----------
Start Date: ----    Completed: ----
Phase II year
----
Phase II Amount
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