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An individual trainer for giving students in the radar intercept observer (RIO) schools concentrated practice in procedures for air-to-air intercepts was designed around a programmable graphics terminal with two integral minicomputers and 8k of core memory. The trainer automatically administers practice in computing values of variables in the intercept triangle, and in making the turns required to put the fighter into position for a sidewinder attack. In an initial field trial at the RIO school, Glynco, Georgia, each of 29 students received 10 hours of practice on this trainer. Data for the values of 33 variables were automatically recorded and were analyzed. It was concluded that this form of computer assisted instruction does produce worthwhile gains in fluency of performance and understanding of the intercept problems. (Author)

Two-way radio communications between air traffic controllers using radar on the ground to give airplane pilots instructions are of interest within the developing framework of the sociology of language. The main purpose of air traffic control language is efficient communication to promote flight safety. This study describes the standardized format of one part of routine two-way radio communications--the approach to the airport to land. (Author)

The subject matter of this training manual is prepared for regular navy and naval reserve personnel. Operations of gyrocompasses and magnetic and magnesyn compasses are discussed with a background of error determination, compass adjustments, and degaussing applications. Navigation techniques are analyzed in terms of piloting, dead reckoning, determination of celestial lines of position, and radar, loran, consol, decca, and omega systems. To train the reader as an assistant to either a navigator or an officer of the deck (OOD) or a junior officer of the deck (JOOD), further explanation is made of ship handling, weather maneuvering, and OOD, JOOD, and navigator duties. Information on rules of the road, publications for navigation use, rating structures, and administration of records and reports is also provided. Besides illustrations for explanation purposes, an edited reprint of the reverse side of the June 1966 pilot chart of the North Atlantic is included in the appendix. (CC)

Fundamentals of major electronic equipments on board ships are presented in this text prepared for naval officers in general. Basic radio principles are discussed in connection with various types of transmitters, receivers, antennas, couplers, transfer panels, remote-control units, frequency standard equipments, teletypewriters, and facsimile installations. Theoretical and practical analyses are made of radar and sonar equipments to show their capabilities and limitations. On the subject of electronic navigation, loran, shoran, omega, tacan, and satellite and ships' inertial navigation systems are presented. Also included are descriptions of digital computers, gun and missile weapon systems, direction finders, closed-circuit television sets, electronic countermeasures, communication console equipments, underwater telephones, intrared and meteorological setups, carrier control approach systems, radiac instruments, and target control installations. Illustrations for explanation purposes and a glossary of general terms are included. (CC)