| RTA TACAN Antenna Modifications for Azimuth Performance. |
OCT 1976 |
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| Authors:
James Keptner; SIERRA RESEARCH CORP BUFFALO N Y
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 | The objectives of this program were to assess the operational characteristics of the 'Modified RTA-2' Antenna by performing installation, checkout, flight test, data reduction and analysis at six operational VORTAC sites. Also, problems causing azimuth restrictions at these sites were to be analyzed to establish the possible improvements which can be identified using the 'Modified RTA-2' Antenna in place of the 'Standard RTA-2' Antenna, and provide supplemental siting criteria manual ... |
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| Evaluation of Digital Data Broadcast for Area Navigation. |
APR 1976 |
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| Authors:
K. Warner; M. Hughes; R. Elliott; SIERRA RESEARCH CORP BUFFALO N Y
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| The objectives of this program were to evaluate the Digital Data Broadcast (DDB) system in the following areas: (1) Substantiate a predicted reduction in cockpit workload and pilot blunder provided by the addition of broadcast data into the RNAV environment. (2) Assess the technical performance characteristics and overall feasibility of a DDB Engineering Model hardware unit. (3) Determine the operational utilization of the DDB concept for RNAV in the terminal ... |
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| CATEGORY III ALTITUDE MONITOR. |
NOV 1965 |
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| Authors:
Robert J. Theisen; SIERRA RESEARCH CORP BUFFALO N Y
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| The report covers the additional work on the Altitude Monitor. The objectives called for (1) simultaneous altitude readout in both 9ground station and aircraft, (2) reduction of airborne equipment weight, (3) two equipment designs, one providing airborne and ground readout for commercial aircraft, the other ground readout (only for light aircraft, (4) higher accuracy of altitude readout, and (5) go/no-go airborne indication. Results were as follows: (1) ground readout was ... |
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| ECONOMIC ANALYSIS COMMERCIAL HELICOPTER IFR OPERATIONS. |
14 FEB 1964 |
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| Authors:
SIERRA RESEARCH CORP BUFFALO N Y
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| The report describes the results of a detailed study which was conducted to determine the potential economic effects of helicopter IFR operations on the scheduled and non-scheduled helicopter operators, considering all pertinent factors; and it is concluded that: (1) Scheduled helicopter operators would gain potential economic benefit from an IFR capability in varying degrees, dependent on locale and types of equipment operated. (2) Generally, non-scheduled operators would gain no economic ... |
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| HIGH-ACCURACY FREQUENCY STANDARDS IN AERIAL NAVIGATION. |
JUL 1963 |
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| Authors:
Roger B. Russell Jr.; John P. Chisholm; SIERRA RESEARCH CORP BUFFALO N Y
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| A study program was undertaken to determine the desirability and utility of the application of precise clocks (or frequency standards) to aircraft positioning measuring systems (or navigation systems). The study included an investigation of both atomic and crystal frequency standards with regard to their performance relative to this application. It also included the study of long-range navigation systems and their airborne equipment. Systems studied were Loran C and various VLF ... |
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Reports by Corporate Author
