Defense Nuclear Agency, 6801 Telegraph Road, Alexandria, VA 22310- 3398

A -- UPDATE OF EM-1, CHAPTER 2, SECTION 2 AIRBLAST OF REAL (NON-IDEAL) SURFACES SOL DNA001-95-R-0028 POC Daniel Bertuna, Negotiator, (703) 325-1197, Scott Morton, Contracting Officer, (703) 325-1200. This solicitation was synopsized in the CBD on 13 March 1995. Contract award will be made in accordance with DFARS Subpart 235.70, Research and Development Streamlined Contracting Procedures. Also, see the Federal Register of 18 October 1994 for information regarding the streamlined process. A FORMAL WRITTEN REQUEST FOR PROPOSAL (RFP) WILL NOT BE ISSUED. This solicitation does NOT include a supplemental package. In case it may later be found necessary for the Contracting Officer to issue an amendment, offerors must provide written address information now to the contract negotiator, Daniel Bertuna at FAX (703) 325-9295. Note: if your company has provided address information in response to the synopsis, a second submission is NOT necessary. All of the mandatory terms, clauses, and provisions in DFARS 235.7006, Research and Development Streamlined Contracting Format, and the following optional items are incorporated by reference: B.3, B.6, C.2, E.3, f.1, G.1, G.2, G.4, I.42, I.43, I.44, I.46, I.48, I.53, I.60, I.64, i.68, I.69, I.70, I.73, I.74, I.75, I.78, I.81, I.84, I.85, I.87, i.88, I.94, I.96, I.97, I.100, I.104, I.107, I.127, I.129, I.132, i.133, I.144, I.153, I.154, I.155, I.156, I.157, I.159, I.167, J.1, M.2. The applicable clauses and provisions are those in effect through FAC 90-20 and DAC 91-6. Standard evaluation factors at Section M of DFARS Subpart 235.70 apply. Deliverables will include the following: 1) Monthly Progress/Financial Reports, 3 copies, due 1 month after contract (MAC) award; 2) Draft Final Report, 6 copies due 13 MAC; 3) Final Report, 1 copy, due 15 MAC. A cost-plus-fixed-fee (CPFF) type contract is contemplated. Period of performance is estimated to be 15 months including the final report. This procurement is a 100% small business set-aside. See Note 1. Technical/Management and Cost proposals must be received by Headquarters, Defense Nuclear Agency, Attn: Daniel Bertuna - AM2, 6801 Telegraph Road, Alexandria, Virginia 22310-3398 no later than 1600 hours local time, on 2 May 1995. The original plus 3 copies of the Technical/Management proposal and the original plus 2 copies of the Cost proposal must be provided. The technical proposal is limited to 100 pages, the cost proposal to 50 pages. Multiple awards are not contemplated. All contractor personnel will require DoD security clearances of SECRET. This contract will require access to classified information, restricted data, and CNWDI. In performing the contract, the contractor will receive and generate classified documents. The DD254, Contract Security Classification Specification, will be included in the contract. The Statement of Work (SOW) is as follows: 1.0 SCOPE- This contract will produce three appendices to EM-1, Chapter 2, Section 2. The first appendix will describe a methodology to construct non-ideal dynamic pressure waveforms in the same way in which Chapter 2, Section 2, currently describes how to construct non-ideal static pressure waveforms. The second appendix will incorporate the knowledge acquired from analysis of the DIAMOND FORTUNE underground test (UGT) data. The third appendix will contain non-ideal airblast algorithms for both high and low pressure, similar to those contained in Defense Nuclear Agency Technical Report DNA-TR-92-41. 1.1 BACKGROUND - This contract will synthesize the pressure waveforms from several Nevada Test Site explosions with non-ideal airblast and enable users to construct non-ideal airblast waveforms as a function of ground range, scaled height of blast (HOB) and elevation for desert surfaces. 2.0 APPLICABLE DOCUMENTS- EM-1, Capabilities of Nuclear Weapons Chapter 2, Airblast Phenomena Section 2, Airblast Over Real (Non-Ideal) Surfaces, WT-1109, Operation TEAPOT, Airblast Overpressure and Dynamic Pressure over Various Surfaces, WT-1110, Operation Teapot, Special Measurements of Dynamic Pressure Versus Time and Distance, WT-1155, Operation TEAPOT, Measurements of Air-Blast Phenomena with Self Recording Gages, WT-1401, Operation PLUMBBOB, Basic Airblast Phenomena, WT-1403, Operation PLUMBBOB, Air-Blast Phenomena in the High Pressure Region, WT-1472, Operation PLUMBBOB, Effects of a Precursor Shock Wave on Blast Loading of a Structure, DASA 1200, Nuclear Weapons Blast Phenomena, POR 7187, Proceedings of the MISTY PICTURE Symposium, DNA-TR-88-230, MISTY PICTURE Dusty Airblast Gas Dynamic (Snob/Greg) Measurements, POR 7390, HURRICANE LAMP Test Series, POR 7414, DIAMOND FORTUNE Event Program Document, POR 7416, DIAMOND FORTUNE Event, Preliminary Results Report, POR 7465, Fielding of Shock Time-of-Arrival Gages on the DIAMOND FORTUNE UGT, POR 7466, DIAMOND FORTUNE Structural Response Experiment, DNA-TR-91-223, Computational Environments Databook for DIAMOND FORTUNE Precursor-Side Testbed Design, DNA-TR-91-238, Airblast in the High Overpressure Regime, DNA-TR-92-41, Airblast from Nuclear Bursts Over an Ideal Surface, DNA-TR-92-91, DIAMOND FORTUNE Camera Experiment, DNA-TR-92-129, Non-Ideal Low HOB Strategic-Yield Airblast at High Overpressure, DNA-TR-93-22, Theoretical Support for DIAMOND FORTUNE Decursed Airblast Experiments, DNA-TR-93-34, DIAMOND FORTUNE Computational Support Program, DNA-TR-93-66, Opacity of Hot Dirty Air, DNA-TR-93-82, Contributions to Development of an Extended Equation of State for Dichlorodifluoromethane (CCl2F2), DNA-TR-93-110, Calculational Studies of Bar Gauge Response. The documents will be made available in the DNA library. Contact Daniel Bertuna to set up an appointment. 3.0 REQUIREMENTS- The contractor shall undertake the following tasks: 3.1 Task 1- Non-Ideal Dynamic Pressure Waveform Construction. The contractor shall write an appendix to EM-1, Chapter 2, Section 2, which shall describe a methodology to construct dynamic pressure waveforms. This methodology shall be similar to the way in which EM-1, Chapter 2, Section 2, currently utilizes Figures 211-49 through 211-56 (contained in the current chapter) to construct static pressure waveforms. The basis for this methodology shall be the airblast data from the desert lines of the following nuclear events: MET, PRISCILLA, and HOOD. The variation of dynamic pressure with height shall be based on the dusty precursed radial data from the MISTY PICTURE high explosive test. This methodology shall provide a complete description of the precursed airblast dynamic pressure environment over desert surfaces at low pressures for events ranging in yields from 8 to 74 KT and scaled HOBs from 140 to 340 scaled feet. 3.2 Task 2- Non-Ideal Airblast at High Overpressure. The contractor shall write a second appendix to EM-1, Chapter 2, Section 2, which shall incorporate the understanding of non-ideal airblast phenomena which DNA and its contractors obtained from the DIAMOND FORTUNE UGT data analysis and the DNA/Shock Physics Weapons Effects Division High Overpressure Program. The appendix shall incorporate the state-of-the-art knowledge of thermally precursed airblast including: fireball phenomena, thermal radiation transmission, thermal blow-off of the ground surface, thermal layer growth, blast wave modification and resulting precursed airblast environments. The appendix shall incorporate the state-of-the-art knowledge of decursed airblast including: x-ray blow-off phenomena, the effects of high density layers above the ground and the resulting decursed airblast environments. 3.3 Task 3- Analytic Approximations for Non-Ideal Dynamic Pressure Waveforms. The contractor shall write a third appendix to EM-1, Chapter 2, Section 2, which shall contain analytic approximations for non-ideal airblast for both high and low pressure. The contractor shall develop similar fits for low pressure non-ideal airblast under this contract. The basis for the low overpressure fits shall be the airblast data form the desert lines of the following nuclear events: MET, PRISCILLA, and HOOD. The variation of dynamic pressure with height for the low overpressure fits shall be based on the dusty precursed radial data from the MISTY PICTURE high explosive test. The low overpressure fits shall provide a complete description of the precursed airblast dynamic pressure environment over desert surfaces for events ranging in yields from 8 to 74 KT and scaled HOBs from 140 to 340 scaled feet. (END SOW) The Contracting Officer is Scott G. Morton, 6801 Telegraph Road, Alexandria, VA 22310. Point of contact is the contract negotiator, Daniel Bertuna at (703) 325-1197. Information on DNA solicitations, already released, can be obtained by calling the DNA Hotline at (703) 325-1173. Reference Synopsis No. 95-42 (0093)

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