SOLICITATION NOTICE
99 -- SOFTWARE FOR WHEEL CONFIGURATION FOR OFF-ROAD APPLICATIONS
- Notice Date
- 9/21/2006
- Notice Type
- Solicitation Notice
- NAICS
- 334111
— Electronic Computer Manufacturing
- Contracting Office
- NASA/Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135
- ZIP Code
- 44135
- Solicitation Number
- NNC067777Q
- Response Due
- 9/27/2006
- Archive Date
- 9/21/2007
- Small Business Set-Aside
- N/A
- Description
- NASA/GRC has a requirement for a software program for wheel configuration for off-road applications to support the next generation of lunar rovers. NASA/GRC intends to purchase the NWVPM software program from the Vehicle Systems Development Corporation to meet this requirement. The following criteria are critical aspects of the system: 1) The model must be suitable for the prediction of wheeled vehicle performance in soft soil. The performance metrics should include the vehicle thrust, rolling resistance, drawbar pull, tractive efficiency, and rut depth, all as a function of wheel slip. 2) The model must have been validated using experiments with a single wheel-soil dynamometer, as well as at least one full-scale wheeled vehicle. 3) The model must be capable of predicting the performance of both rigid and flexible wheels. 4) The model must predict the normal and shear stress distributions at the tire-terrain interface. 5) The model must parameterize the terrain using the so called ?Bekker parameters?. These are the frictional modulus of deformation, the cohesive modulus of deformation, the exponent of deformation, the angle of internal friction, coefficient of cohesion, and coefficient of slip. 6) The model must take into account the position of each set of wheels along the vehicle body. 7) The model must take into account the vehicle load distribution and dynamic force exchange between wheels through the vehicle chassis and suspension. 8) The model must take into account the effect of multiple-wheels passing over the same terrain, referred to as the ?multi-pass effect?. 9) The model must take into account the effect of shear resistance when calculating the sinkage of the tire into the soil. 10) The model must solve in less than ten seconds for all input parameter cases. 11) The model must operate on the Windows platform. 12) The mathematical framework behind the model must be revealed. The Government intends to acquire a commercial item using FAR Part 12. Interested organizations may submit their capabilities and qualifications to perform the effort in writing to the identified point of contact not later than 12:00 noon local time on 09/27/06. Such capabilities/qualifications will be evaluated solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. A determination by the Government not to compete this proposed effort on a full and open competition basis, based upon responses to this notice, is solely within the discretion of the Government. Oral communications are not acceptable in response to this notice. An Ombudsman has been appointed. See NASA Specific Note ?B?. Any referenced notes may be viewed at the following URLS linked below.
- Web Link
-
Click here for the latest information about this notice
(http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin=22#122314)
- Record
- SN01151297-W 20060923/060921221900 (fbodaily.com)
- Source
-
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