Contracting Competency Division, Attn: Bill Jones 25421D-MS/32 Naval Air Warfare Center Aircraft Division, Patuxent River, MD 20670-5304

R -- F/A-18 SIMULATION AND AERODYNAMIC DATA BASE IMPROVEMENT STUDIES SOL N00421-97-R-1119 DUE 030197 POC Bill Jones, Contract Specialist/Contracting Officer, (301) 342-1825 x153. The Naval Air Warfare Center Aircraft Division (NAVAIRWARCENAIRDIV), Patuxent River, MD plans to acquire on a Cost Plus Fixed Fee, level of effort basis, F/A-18 Simulation and Aerodynamic Data Base Improvement Studies in support of the Flight Vehicle Simulation Branch, Code 4.3.2.2., ((AKA/Manned Flight Simulator (MFS)), Naval Air Warfare Center Aircraft Division, Patuxent River, MD. NAVAIRWARCENAIRDIV has been tasked to maintain and upgrade the highest possible fidelity aircraft simulations in order to support the fleet through flight test simulation support programs, the development of upgrades for current training simulations, and to support research into advanced aircraft configurations. These simulations are hosted in the MFS Facility, and are used by governmental and private agencies throughout the world. MFS personnel of the NAVAIRWARCENACDIV are tasked with developing new technologies for gathering or using existing aerodynamic data to maintain the highest level of fidelity possible in existingsimulations of DOD, Naval and Marine aircraft. The MFS develops, integrates and validates new mathematical models based on available data. These models simulate propulsion systems, air vehicle dynamic response and performance, and digital and analog flight control systems. The mathematical models are used for incorporation into simulators and used for Naval flight test support, accident and incident investigations, and research and development. Constant improvement and validation is required to maintain the quality of the MFS simulations to respond to the growing and changing needs of the NAVAIRWARCENACDIV flight test community. The NAVAIRWARCENACDIV continues to create not only new aerodynamic databases but also to create the tools required for future upgrades and development work. MFS requires the following support services: ENGINEERING AND TECHNICAL SUPPORT: [A] Evaluating of the data gathered using the rotary balance test facility located in the NASA Langley 20 foot vertical tunnel. Gathering and evaluating data for the analysis and simulation modeling of stall/post-stall maneuvering conditions. Gathering and evaluating data for the analysis and simulation modeling of out-of-control flight motion predictions.>>>>>>>>>[B] Evaluating of the data gathered using the Large Amplitude, Multi-Purpose (LAMP) test facility, designed to obtain a wide range of static and dynamic test data. Using this facility to acquire the steady-state (both static & rotational) and oscillatory aerodynamic data necessary for calculating the full-scale subsonic vehicle motions possible throughout the angle-of-attack range (e.g. 180 ). Using double C-sector sting support system and oscillatory stings as required to obtain static and dynamic test data. Conducting both static and velocity vector dynamic testing (rotary balance testing) on the test rigFs basic configuration. Gathering data to study the influence of a steady rotating environment on the body axis dynamic characteristics.>>>>>>>>> [C] Evaluating of the data gathered using the former NASA Full Scale 30 ft X 60 ft wind tunnel facility. .>>>>>> [D] Performing modeling and database development using unique analysis and mechanization tools to provide turnkey high fidelity, high angle of attack simulation databases.>>>>>>>>> [E] Providing the testing and support necessary to collect and implement a new and improved dynamic data set for Navy simulations as well as investigation of and support for the many areas of simulation technology that the NAVAIRWARCENACDIV requires.>>>>>>>> [F] Performing the design engineering, construction, flight test data support, management and reduction of flight test data for large scale Remotely Piloted Vehicles (RPVs) that model the aerodynamic characteristics of specified Naval aircraft or portions thereof.######### FACILITIES CAPABILITIES: [A] Rotary balance test facility located in the NASA Langley 20 foot vertical tunnel.>>>>>> [B] Large Amplitude, Multi-Purpose (LAMP) test facility>>>>>> [C] Full Scale 30 ft X 60 ft wind tunnel facility. #########LABOR CATEGORIES: [A] Supervisory Manager Flight Mechanics,>>>> [ B] Senior Engineer Flight Mechanics>>>>>>,[C] Engineering Technician>>>>>> [D] Computer Programmer, This contract will have a base period of one year and four one year options for a total period of performance of five years. This contract will be negotiated on a sole source basis with Bihrle Applied Research, Inc. (BAR) under the authority of FAR 6.301-1 (Only one responsible source and no other supplies or services will satisfy agency requirements). The sole source determination is based on the following factors: [A] BAR is the developer and sole operator of the rotary balance test facility located in the NASA Langley 20 foot vertical tunnel. This facility is the only operational test facility in the United States that can obtain dynamic test data during wind axis rolling conditions and is consequently indispensable to the Navy. This data has become increasingly important during the analysis and simulation modeling of stall/post-stall maneuvering conditions, as well as its use in predicting out-of-control motions. BAR developed the test capability, data acquisition and analysis software in use at this facility, and as a result, are the only authorized operators of the rotary balance test rig. [B] BAR has designed, built and deployed their own test facility, the Large Amplitude, Multi-Purpose (LAMP) test facility, designed specifically to obtain a wide range of static and dynamic test data in the most cost effective manner. Using one model, one can quickly acquire all the aerodynamic data necessary, i.e. steady-state (both static & rotational) and oscillatory, for calculating all the full-scale subsonic vehicle motions possible throughout the angle-of-attack range (e.g. 180 ). The test rig provides maximum operational flexibility. A double C-sector sting support system affords continuous sideslip and angle-of-attack sweeps of 32 and -4 to +94, respectively. By using alternate mountings, an unlimited angle of attack and sideslip ranges are also possible. Both static and velocity vector dynamic testing (rotary balance testing) can be conducted on the test rigFs basic configuration. Two oscillatory stings, capable of sinusoidal motions at selected amplitudes and frequencies, also attach to the test rig to permit the measurement of body axis pitch, yaw, and roll rate damping data through 90 angle of attack. While all these test capabilities are available with the test rig fixed, further capabilities are achieved because of the rigFs ability to rotate about the velocity vector in conjunction with the independent body axis testing. The same angle-of- attack and sideslip ranges are available during the steady-state rotation tests. In addition, forced oscillation tests can be performed with the rig rotating. Consequently, the influence of a steady rotating environment on the body axis dynamic characteristics can be determined. This test capability is unduplicated by any other test facility in the world, and is particularly well suited for the analysis oflarge angle out-of control conditions such as spins and falling leaf motions. Ongoing research indicates a new method for dynamic data acquisition and modeling may evolve from this test capability. [C] BAR has recently teamed with Old Dominion University (ODU) to make the former NASA Full Scale 30 ft X 60 ft wind tunnel operational as a commercial facility. This has been completed, with the first commercial test scheduled to begin February, 1997. This test facility contains the largest commercially operational test section in use in the country and is capable of testing large sub-scale wind tunnel models through full scale aircraft and aircraft components. Past applicable Navy support has ranged from the subscale testing of large aircraft and helicopter models through the evaluation of unmanned vehicles and full scale components. As the entity providing the operational engineering support and test expertise, BAR is in a unique position to extend this facilities test capabilities to the Navy. [D] BARFs interaction with the test facilities mentioned, as well as their involvement in the analysis and use of these data sets in air vehicle simulation, have given rise to a range of data base analysis and mechanization tools in the industry. BARFs modeling expertise in the high angle of attack flight regime has been internationally recognized and is unique in the industry. With this capability, BAR is the only company in the world that has consistently provided turnkey high fidelity, high angle of attack simulation databases to both industry and government agencies. Consequently, the facilities and services provided by BAR are unique and indispensable to the Navy. See Numbered Note(s): 22. (0029)

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