Accession Number:

ADA801443

Title:

An Analysis of the Airspeeds and Normal Accelerations of sikorsky S-42A Airplanes in Commercial Transport Operation

Personal Author(s):

Corporate Author:

NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS LANGLEY FIELD VA LANGLEY AERONAUTICAL LABORATORY

Report Date:

1948-10-01

Abstract:

Acceleration and airspeed data taken on four Sikorsky S-42A airplanes operated on Caribbean routes and along the east coast of South America have been analyzed and the results indicate that the flight loads seem about average in comparison with the flight loads of other types of airplanes operated on different routes. The limit gust load factor of the S-42A airplanes will be exceeded, on the average, once in about 3 X 10 7 flight miles. The loads of the Sikorsky S-42A airplanes were less conservative than the loads of the Boeing S-307 airplanes, both of which were operated in the same general region this difference was attributed to the higher ratio of probable speed of maximum acceleration occurrence to the design maximum level-flight speed V sub pV sub L of the S-42A airplanes. Caribbean operations of the S-42A and the S-307 airplanes are in good agreement with respect to route roughness and do not show greater route roughness than most of the other routes compared.

Descriptive Note:

Technical note

Pages:

0015

Identifiers:

Communities Of Interest:

Distribution Statement:

Approved for public release; distribution is unlimited.

File Size:

0.86MB