AD0000042 : ACCURACY OF THREE-GYRO GUNSIGHT CALIBRATION FOR CALIBER 0.50 GUNFIRE,

Report Date : DEC 1952 ,       Distribution Statement :

Pagination or Media Count : 29

Cost : $ 9.60

Report Number(s) : R-34

Contract Number : W33-038-sc-13969

Project Number : MX-885D

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE INSTRUMENTATION LAB

Personal Author(s) : Riley ,Leo A. , Gras,Ranulf W.

Abstract : The 3-gyro gunsight for air-to-air gunfire fire control of fixed-gun fighters utilizes 3 single-degree-of-freedom gyros for angular velocity measurement of target motion and cross-roll correction, a 2-degree-of-freedom gyro for determination of the vertical for gravity-drop correction, and an angle-of-attack measuring device for correction for velocity jump. Results of an accuracy study are presented in which simulated photographs show where the projection pattern will strike the target. A 5-mil-diam. dispersion pattern, represented by a circle drawn to scale, is shown as displaced from the center of the target by the calibration deviation or error. The effects of gun wander are not considered in the pictoral presentation of gun sight performance, although possible limits of the location of the 80% gun dispersion pattern are suggested for assumed limits of gun wander.

Descriptor : (*GYROSCOPIC SIGHTS

Identifier : CAL .50 ORDNANCE ITEMS


AD0000043 : ACCURACY OF THREE-GYRO ROCKETSIGHT CALIBRATION FOR 2.75 INCH FFAR,

Report Date : DEC 1952 ,       Distribution Statement :

Pagination or Media Count : 17

Cost : $ 9.60

Report Number(s) : R-36

Contract Number : W33-038-ac-13969

Project Number : MX-885D

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE INSTRUMENTATION LAB

Personal Author(s) : Riley ,Leo A. , Gras,Ranulf W.

Abstract : Simulated photographs show where an FFAR dispersion pattern 5 mils in diameter will strike a target for various values of present and future range, present target angle, aircraft loading, and angle of attack when the 3-gyro rocket sight is used. The 3-gyro rocket sight configuration utilizes 3 single-degree-of-freedom gyros for angular velocity measurement to correct for target motion and cross roll; one 2-degrees-of-freedom gyro for determination of the vertical for gravity drop correction; and an angle-of-attack measuring device to correct for velocity jump. The performance represented by the pictures is valid if the pip is held on the center of the target, tracking is smooth and continuous, the aircraft is flown without sip or skid radar ranging is continuous and accurate, the effect system dispersion is not considered, the angle-of-attack measurement is accurate, the propellant temperature is 40 F, the rocket is fired from a 48-in. open-end launcher tube, and the target flies in a constant-sped horizontal course.

Descriptor : (*ROCKET SIGHTS

Identifier : 2.75-IN. ORDNANCE ITEMS


AD0000141 : DEVELOPMENT OF A FUNCTIONAL KNOWLEDGE TEST BATTERY FOR THE MEASUREMENT OF PROFICIENCY OF RADAR MECHANICS

Report Date : OCT 1952 ,       Distribution Statement :

Pagination or Media Count : 29

Cost : $ 9.60

Contract Number : AF33 038 13236

Monitor Acronym : HRRC

Monitor Series : RB-52-30

Corporate Author : ILLINOIS UNIV URBANA

Personal Author(s) : CORNELL,FRANCIS G. , DAMRIN,DORA E.

Abstract : Six tests were developed to measure the substantive, procedural, and diagnostic understandings of mechanics for the AN/APQ-24 airborne radar-computer equipment. Four of the tests were routine multiple-choice tests, while 2 of the tests for diagnostic understanding were of a new tab form designed for the assessment of aspects of trouble-shooting performance. Each tab item included a description of a malfunctioning radar set, including a line drawing of the scope; below this was a list of checks which the mechanic might wish to make. A description of the response of the set to each of these checks was covered by a removable tab. The mechanic performs as many checks as he considers necessary by removing tabs and makes his slection of the malfuntioning component of the system from another list. By removing a tab alongside his choice, the mechanic can tell whether the choice was correct. In the event of an incorrect choice, the checking process can be continued and another choice made. A preliminary evaluation of the tests was made, and the test battery was considered sufficiently reliable and valid for further study.

Descriptor : ENGINEERING DRAWINGS

Identifier : AN/APQ-24


AD0000288 : DEVELOPMENT PROGRAM FOR AN AUTOMATIC PILOT FOR HIGH PERFORMANCE AIRCRAFT.

Report Date : 22 JAN 1953 ,       Distribution Statement :

Pagination or Media Count : 48

Cost : $ 9.60

Report Number(s) : GET-2257-12

Contract Number : AF33 038 5701

Corporate Author : GENERAL ELECTRIC CO SCHENECTADY N Y

Descriptor : *AUTOMATIC PILOTS

Fields & Groups : Flight Control and Instrumentation


AD0001765 : THE ELECTRICAL STABILITY OF HIGH CURRENT ARCS IN AIR AND IN CONTROLLED GASEOUS MIXTURES

Report Date : 31 DEC 1952 ,       Distribution Statement :

Pagination or Media Count : 1

Cost : $ 9.60

Report Number(s) : TR2

Contract Number : NONR24809

Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD SCHOOL OF ENGINEERING

Abstract : Research is being conducted to determine the extent to which th e electrical behavior of an arc is influenced by gaseous mixtures. One phase of the investigation is concerned with the characterisitics of the W arc in A-He mixtures. The other deals with self-generated oscillations in the dc carbon arc.

Descriptor :


AD0003318 : THE USE OF PRACTICAL PERFORMANCE TESTS IN THE MEASUREMENT OF SHIPBOARD PERFORMANCE OF ENLISTED NAVAL PERSONNEL

Report Date : 25 NOV 1952 ,       Distribution Statement :

Pagination or Media Count : 100

Cost : $ 9.60

Contract Number : N8ONR70001

Corporate Author : HUMAN FACTORS RESEARCH INC LOS ANGELES CA

Personal Author(s) : WILSON, CLARK L. , MACKIE, ROBERT R.

Abstract : The Practical Performance Tests (PPT) were administered to 725 men serving aboard submarines, to determine the test's practicability for measuring the quality of shipboard performance of Navy enlisted men. The PPT was composed of simulated actual job situations using standard Navy equipment, and it tested operational, identification, procedural, and diagnostic ability. Written job-knowledge and safety tests were included in the composite test batteries. Information on the reliabilities and interrelationship of the tests, observations made on the construction of performance tests, and results of correlational studies with other measures of shipboard performance are included. These job-sample performance tests appeared valuable for training, testing, and rating programs.

Descriptor :


AD0004052 : THE INFLUENCE OF EDDY CURRENTS UPON THE PERFORMANCE OF A-C AND D-C CONTROLLED MAGNETIC AMPLIFIERS

Report Date : 15 DEC 1952 ,       Distribution Statement :

Pagination or Media Count : 1

Cost : $ 9.60

Report Number(s) : R-288-52
      PIB-227

Contract Number : N6ORI9804

Corporate Author : POLYTECHNIC INST OF BROOKLYN N Y MICROWAVE RESEARCH INST

Personal Author(s) : ZAROUNI,RAYMOND

Descriptor : *MAGNETIC AMPLIFIERS


AD0004104 : A COAXIAL MAGIC-T

Report Date : 10 OCT 1952 ,       Distribution Statement :

Pagination or Media Count : 1

Cost : $ 9.60

Report Number(s) : TR162

Contract Number : N5ORI7601

Corporate Author : HARVARD UNIV CAMBRIDGE MASS CRUFT LAB

Personal Author(s) : MORITA,T. , SHEINGOLD,L.S.

Abstract : Three different designs of coaxial hybrid junctions having perf ormance analogous to a wave-guide magic-T are discussed. The experimental results with each type indicate that SWR's less than 2 looking into any arm are easily obtainable over a frequency band of about 10%. With carefully matched loads, decoupling greater than 70 db can be obtained. An application of the magic-T in phase measurement is described which is independent of the signal amplitude and is similar to the homodyne system of phase measurement.

Descriptor : AMPLITUDE


AD0004716 : THE MILITARY ROLE OF INFRARED DETECTION. VOLUME 1. GENERAL EVALUATION

Report Date : OCT 1952 ,       Distribution Statement :

Pagination or Media Count : 1

Cost : $ 9.60

Contract Number : NONR56201

Corporate Author : BROWN UNIV PROVIDENCE R I

Descriptor : *INFRARED SCANNING


AD0005194 : STATUS OF WORK FEBRUARY 1, 1952

Report Date : FEB 1952 ,       Distribution Statement :

Pagination or Media Count : 2

Cost : $ 9.60

Report Number(s) : S349

Contract Number : NOBSR52486

Corporate Author : FARNSWORTH ELECTRONICS CO FORT WAYNE IND

Descriptor : *INFRARED OPTICAL SYSTEMS