Wind Tunnel Model Force and Moment Measurement Capability with Corrections for Structural Motion Effects

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9101-12-M-0005
Agency Tracking Number: F112-187-2069
Amount: $124,694.00
Phase: Phase I
Program: SBIR
Awards Year: 2012
Solicitation Year: 2011
Solicitation Topic Code: AF112-187
Solicitation Number: 2011.2
Small Business Information
4455 Genesee St, P.O. Box 400, Buffalo, NY, -
DUNS: 171078947
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Doug Stryker
 Principal Investigator
 (716) 631-6882
 doug.stryker@calspan.com
Business Contact
 Paul Lanigan
Title: Sr. Contracts Manager
Phone: (716) 631-6994
Email: paul.lanigan@calspan.com
Research Institution
 Stub
Abstract
ABSTRACT: Wind tunnels are used as an important tool to understand the aerodynamics of aircraft. Wind tunnel models are typically instrumented with balances that are capable of measuring the forces and moments that an aircraft will be subjected. Along with measuring these forces and moments knowledge of the aircraft attitude is required in order to resolve the measured components from the balance into their respective aerodynamic coefficients. In particular measurement of the angle of attack (AOA) of the aircraft is critical. Instrumentation such as inclinometers has been used successfully for many years for this task. However, errors in the actual aerodynamic forces have suffered from the effects of model dynamics that produce a bias in both measured forces and AOA. It has been found that this bias can exceed the desired accuracy requirements. Various approaches have been taken to reduce this error and have shown promise. However, some of these approaches are not readily adaptable to all models. This proposal deals with this issue by developing the design of a sensor system that is compact in size and could potentially be integrated as part of the balance. BENEFIT: This research will develop a cost effective method for accurately correcting for inertial effects of measured aerodynamic forces and moments from a wind tunnel model experiencing dynamic conditions, providing the research community with improved data quality and a sensor system that is readily adapted to wind tunnel models and balances.

* Information listed above is at the time of submission. *

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