Annual Report of the National Advisory Committee for Aeronautics (15th). Administrative Report Including Technical Reports Nos. 309 to 336 (open access)

Annual Report of the National Advisory Committee for Aeronautics (15th). Administrative Report Including Technical Reports Nos. 309 to 336

Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, bibliographies, and financial report.
Date: 1930
Creator: unknown
System: The UNT Digital Library
Present Status of Aircraft Instruments (open access)

Present Status of Aircraft Instruments

This report gives a brief description of the present state of development and of the performance characteristics of instruments included in the following group: speed instruments, altitude instruments, navigation instruments, power-plant instruments, oxygen instruments, instruments for aerial photography, fog-flying instruments, general problems, summary of instrument and research problems. The items considered under performance include sensitivity, scale errors, effects of temperature and pressure, effects of acceleration and vibration, time lag, damping, leaks, elastic defects, and friction.
Date: October 9, 1930
Creator: Subcommittee on Instruments
System: The UNT Digital Library
Annual Report of the Boy Scouts of America: 1929 (open access)

Annual Report of the Boy Scouts of America: 1929

Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1929, activities, department reports, finance, foreign relations, organizational leadership, and other information about scouting programs.
Date: April 8, 1930
Creator: Boy Scouts of America
System: The Portal to Texas History