MODIFICATION
B -- Study on incorporating fluid dynamic simulations into structural dynamics simulations
- Notice Date
- 3/14/2014
- Notice Type
- Modification/Amendment
- NAICS
- 541712
— Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)
- Contracting Office
- Department of the Air Force, Air Force Materiel Command, AFLCMC/PZIO - WPAFB, 1940 ALLBROOK DRIVE, WRIGHT-PATTERSON AFB, Ohio, 45433-5309, United States
- ZIP Code
- 45433-5309
- Solicitation Number
- FA8601-14-T-0100
- Archive Date
- 4/3/2014
- Point of Contact
- Yelena Kanevsky, Phone: 9375224601
- E-Mail Address
-
yelena.kanevsky@us.af.mil
(yelena.kanevsky@us.af.mil)
- Small Business Set-Aside
- N/A
- Description
- QUESTIONS AND ANSWERS: 1. Would a solution using Loci-CHEM, an open source tool used by AFRL and NASA, as the CFD solver be acceptable if the aerodynamic dataset is provided in a format readable at AFIT? * No 2. Would a solution using C or C++ as the software language for the subroutine to interface between the aerodynamic and structural simulation be acceptable? * No 3. Do the government furnished model files of the preliminary design include finite element models? Please provide any available information about the fidelity, complexity, and size of these models. * Yes, 60k degrees of freedom, accurate material properties of composite layup 4. How many individual operating conditions, flow conditions, aerodynamic cases, or separate analyses are requested? Please provide any available information about the analysis conditions (i.e., airspeed, wing flap velocity). * Representative test cases of flapping are requested to show suitability of the algorithm. Fluid dynamics simulations should be extensive enough to accurately model the states encountered. Wing flap frequency will be over the range of 15 - 30 Hz. 5. Please provide any available information about the size and scale of the subject ornithopter (i.e., inset, bird, or larger scale) * 3 cm by 1 cm 6. What kind of flapping motion is to be analyzed (i.e., up and down, figure eight, other)? * Up and down with figure 8 induced by aerodynamic effects 7. Are the flapping stroke displacements much larger as compared to anticipated deflections of the wing structure itself? * Aero/inertial deflections are on the order of 10%-40% of the rigid flap stroke 8. Would a solution that involved two-way coupling, where aerodynamic forces are relayed to the structural solver and structural displacements are relayed to the CFD solver, be of interest to AFIT? * Not for this SOW, since aerodynamic forces should be calculated via a blade element theory based model. 9. Is the offeror to perform all aspects of the fluid dynamic simulation and the structural simulation, or will some aspects be performed by AFIT. * I'm not sure I understand the question. Structural/inertial and aerodynamic loads are to be computed by the FEA software.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USAF/AFMC/88 CONS/FA8601-14-T-0100/listing.html)
- Record
- SN03311095-W 20140316/140314234410-64d44b539c9543cf2a6b39659465c3aa (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
| FSG Index | This Issue's Index | Today's FBO Daily Index Page |