Generalized Theory for Seaplane Impact Page: 1 of 77
This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
REPORT 1103
CONTENTS
Page
SUMMARY 5------------------- ---- --- --- ----3
INTRODUCTION 9------------------------------------ --------- 53
SYMBOLS.... ------------------------------------------------ 95
THEORY------------------ - - - -- - - - - - - -- -- - - - - - 55
Two-Dimensional Considerations 955
Three-Dimensional Case--------- ----------------- --------- 955
Basic assumptions 9----------------------------------------55
Momentum considerations955
Hydrodynamic reactions_ - -- ------------ 956
Virtual mass-------- ------------------------- 956
GENERAL RELATIONSHIPS DURING IMPACT ---------- 957
Dynamical Relationships ------------------ - 957
Instantaneous force - --------- 957
Equations of motion.... .. 957
Generalized relationships ------------ -------- 959
Moment Relationships --- ------------------ 961
Instantaneous pitching moment- - - - 062
Generalized relationship --------------------------962
Transfer of moments. -------------------------------- 963
RELATIONSHIPS AT PARTICULAR STAGES OF THE IMPACT ---- 963
Instant of Maximum Acceleration --- 963
Instant of Maximum Pitching Moment About the Step0 96-4
Instant of Maximum Penetration-------------------------------------- 964
Instant of Exit During Rebound--------------- ----------- 965
LIMITING CONDITIONS-- ---------------- -- - - 965
Resultant Velocity Normal to Keel: =0------------ 965
General relationships during impac - ---------------------------- 9655
Values of generalized variables for particular stages of the impact_ . 986
Resultant Velocity Parallel to Water Surface: -= 967
EFFECTS OF CHINE IMIMERSION ---------------------------- 967
Physical Considerations -- - .------------------ --------- 968
Simplified Analys -------------- 968-
DEAD-RISE-ANGLE AND ASPECT-RATIO FUNCTIONS 969
Virtual Mass -------------------------- ----------- 969
Wetted Width ---------------_ ----------------------------- ------970
Aspect Ratio .. ------ --970
APPLICABILITY AND LIMITATIONS OF THE THEORY-------------- 971
DISCUSSION OF GENERALIZED RESULTS....--------------------------- 971
COMPARISON OF THEORETICAL RESULTS WITH EXPERIMENTAL
DA TA- .. .. . . - - _ -- ------_- - --; - - - - -- 972
Source of Experimental Data--.. ----------------- 972
Comparisons of Loads and Motions------------------------ ------------ 973
Comparisons of Pitehing Moments_ 974
CONCLUDING REMARKS----------------------- -- --.. ----------------- 975
REFERENCES ------------------------- --- ----- 976
FIGURES.---------------------- ----------- 977
TABLES-_- - - 1------------0----------- 023951
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Milwitzky, Benjamin. Generalized Theory for Seaplane Impact, report, October 30, 1952; (https://digital.library.unt.edu/ark:/67531/metadc60462/m1/1/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.