Accession Number:

AD0425615

Title:

THE EFFECT OF LANDING HEADING ON THE LOADS AND MOTIONS OF A SEAPLANE IN REGULAR WAVES,

Descriptive Note:

Corporate Author:

STEVENS INST OF TECH HOBOKEN N J DAVIDSON LAB

Personal Author(s):

Report Date:

1963-09-01

Pagination or Media Count:

27.0

Abstract:

The relation between heading relative to an existing swell system and the severity of seaplane loads and motions developed during landings into various head winds was studied. Analysis revealed an effective wave length that correlates the maximum impace loads and motions recorded for a model of the XJR2F-1 U-16 aircraft at all landing speeds and oblique headings to wave systems of different wave lengths. Maximum impacts are found to reach a peak where the effective wave length is twice the hull length, while the largest motions are shown to develop at an effective wave length of between two and one-half to three times the hull length. Landing headings selected so that the effective wave length presented to an aircraft is greater than ten times the hull length are found to keep maximum loads within two times the calm water values and maximum motions within three times calm water values. An optimum heading is shown to exist for any known swell system and landing velocity such that the loads and motions are equivalent to calm water values. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE