Greetings All - On my last visit to the Vought Archives, I copied the following drawings of the two A-7X variants being looked at - the single engine F-101 DFE and the twin engine F404 Dry version (V-529).Enjoy the Day! Mark
It would be interesting, but a real challenge, to convert a 1/48 A-7 model into the twin F404 version. Larry
INTRODUCTION The Airborne Light Optical Fiber Technology (ALOFT) demonstration was sponsoredby the Naval Air System Command (AIR-360) to show the feasibility of using fiberoptics on an airborne military platform and to determine if fiber optics could lower theoverall cost or improve the overall performance of military systems.When signals in an avionics environment ire transferred electrically, there is foundto be potential operational degradation and damage due to the susceptibility of metallicconductors to elect romiagnetic interference, radio-frequency interference, lightning strikes,and nuclear-generated electromagnetic pulses. Other sources of electronic interference suchas crosstalk, ground-looping, reflection, and short-circuit loading also affect system operation.When an electro-optical interface is used to transfer signals, information is transmittedthrough bundles of glass fibers called fiber-optic cables. Because of the dielectric nature ofglass, the bundles are immune to electrical interference and are unaffected by electbonic conductionproblems. Because of these attributes and the high-bandwidth capabilities of fiberopticcables, multiplexing can be used reliably in a fiber-optic system. Multiplexing reducesthe number of the required signal paths and the complexity of cable connectors. The resultingenhancement of system performance and the savings of space and weight may make fiberoptictechnology highly cost effective for avionic systems.PARTICIPANTS The ALOFT project began in March 1974 when NAVAIR assigned NELC the responsibilityfor conducting the fiber-optic investigation. The project came to an end in February1977 after more than 107 flight-test hours of the fiber-optic A-7 system had been conductedby Naval Weapons Center (NWC), China Lake, California. NELC was tasked by NAVAIR to manage the ALOFT project and to perform evaluationtests on fiber-optic components. IBM, Federal Systems Division, Owego, New York,performed the system design, fabrication, and integration. Ling-Temnco-Vought (LTV),Vought Systems Division, Dallas, Texas, developed an installation plan and performed theinitial system ground tests. The Naval Weapons Center, China Lake, California, supplied thenecessary software for the system, safety-of-flight verification, and the flight test facilitiesfor the ALOFT demonstration. NWC also installed the ALOFT system in the aircraft andperformed ground and flight testing. The Naval Air Test Center (NATC), Patuxent River.Maryland, evaluated the reliability and maintainability of the system. Emi and lightning susccptibilitytests were performed by LTV, McDonnell Aircraft Company, and personnel ofthe Flight Dynamics Laboratory, Wright-Patterson Air Force Base, Ohio. McDonnell AircraftCompany, using data and analyses supplied by the Naval Postgraduate School, Monterey,California, executed an economic analysis of the ALOFT system.
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