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This report is a presentation given at the NDIA Small Arms Conference in Little Rock, AR, on 13-16 Aug 2001., The original document contains color images. Proceedings from the 2001 Joint Services Small Arms Symposium, Exhibition & Firing Demonstration, 13-16 Aug 2001. Contains viewgraphs only.

The purpose of this report is to assist the Joint Service Small Arms Program (JSSAP) Office in defining the requirements for the Objective Personal Weapon, OPW, which is a member of the Objective Family of Small Arms. This report documents the early efforts to address preliminary goals for the (OPW) and the agreements reached at a Shooters' Conference held in FEB 1995. The report contains: description of the conference, list of attendees, and description of how the various users foresee the application of an OPW; summary of each briefing and specific goals identified that each shooter felt is needed; discussions of each OPW goal as agreed to by the participants, with caveats identified as appropriate; and conclusions reached by the attendees (with exceptions as noted in general terms as to the operational environment, targets, time frame of interest, performance parameters, and weapon characteristics. These preliminary goals and expressions of needs will form the basis of a Small Arms Symposium with the ADPA in June 1 995, where the goals will be explained to industry representatives. A subsequent conference among interested industry and government agencies will be held in August where potential technology approaches to meeting the stated goals will be presented, and discussed.

This report describes the theory and results of testing conducted to determine the feasibility of using condensate-formed fuel fog for inerting fuel tanks. The tests were performed in such a manner that the temperatures of the ullage space and one or two spray nozzles could be varied independently. A combination of spray temperatures and nozzle types was found that provided inerting over the complete range of ullage-space temperatures tested (+60 F to -55 F). Further findings for the 6-cubic-foot ullage space (over liquid JP-4 fuel) were that 1.0-gph nozzles were sufficient but 0.4-gph nozzles were not, neither single hot nor single cold nozzles were sufficient, and inerting would not occur for all ullage conditions except when both hot and cold nozzles were used. It was found that the hot and cold spray temperature differentials could each be at least as low as 5 F. In addition, a fuel fogging preliminary design for the AH-1G Cobra helicopter is included. (Author)

INVESTIGATIONS WERE MADE TO DETERMINE WHETHER THE Loran C service would be a valuable asset to oceanographic problems. A workable interim system of Loran C reception was provided within a limited operating area. It has the capability of providing an increased accuracy of position determination over existing methods, with certain restrictions imposed by simplification of the analyzing equipment. The model discussed has no provisions for eliminating cycle ambiguity amounting to 10 microsecond increments. It is hoped that this ambiguity can be resolved in future models. Plans are discussed to improve the signal to noise ratio by utilizing more of the pulse train transmitted by the stations. (Author)

The M60 Machine Gun was equipped with the test item, with 100 rounds of ammunition in a T-7 bandoleer attached, weighed 1.2 lbs. less than an M60 Machine Gun equipped with the current mounting bracket and canvas magazine filled with 100 rounds of ammunition. Approximately 12,000 rounds were fired from each of four M60 machine guns equipped with modified feed systems. The ammunition was fed from various containers that were not attached to the gun. No interference from the hook on the modified systems was noted. No difference in the ease of attachment of a loaded T-7 bandoleer to the hooks was observed. The Type A Modified Feed System, when used in conjunction with a bandoleer identical to the Machine Gun Bandoleer, T-7, was superior to the mounting bracket-canvas magazine combination used on the Gun, Machine, 7.62mm, M60, and is suitable for Army use. The Type B Modified Feed System for the Gun, Machine, 7.62mm, M60, is not suitable for use with the Gun, Machine, 7.62mm, M60. The design of the Machine Gun Bandoleer, T-7, is suitable for use with the Type A Modified Feed System for the Gun, Machine, 7.62mm, M60. However, this bandoleer lacks the desired durability. (Author)

A developmental ammunition and feed guide for the M-60 machine gun mounted in UH-1 helicopters in Vietnam. The items had been requested under the ENSURE procedures. There is no requirement for the lightweight 100 round ammunition tray evaluated. Since the lightweight ammunition guide evaluated corrected the failure-to-feed problems that occurred frequently with the machine guns, there is a requirement for it. The ammunition tray evaluated should not be adopted for use in RVN. The ammunition guide evaluated should be adopted for use by UH-1 door gunners where required. (Author)

The development of a one-piece (monolithic) ceramic/glass-reinforced plastic (GRP) composite armor system has been accomplished. Two ceramic compositions--AD85 and AD99 Coors Alumina--and two ceramic fabrication procedures--casting and sintering, and isostatic pressing and sintering--were evaluated. An isostatically pressed and sintered AD85 composition proved to be the most appropriate from the standpoint of performance, cost, and availability of facilities to manufacture large quantities. An autoclave procedure for fabricating the GRP back-up was developed to provide good fit of components. Adhesive systems to join ceramic to GRP, and spall shields to suppress forward spall were evaluated. Flexible adhesive systems, 10-20 mils thick, were found to contribute to good ceramic retention and good protective plural-hit capability.