The Hertz vector revisited: a simple physical picture

2014 ◽  
Vol 16 (10) ◽  
pp. 105705 ◽  
Author(s):  
Marco Ornigotti ◽  
Andrea Aiello
2021 ◽  
pp. 126-134
Author(s):  
John Carriero
Keyword(s):  

1949 ◽  
Vol 1 (1) ◽  
pp. 3-34
Author(s):  
Haydn Templeton

SummaryAileron reversal effects on swept-back wings in general and elevon reversal effects on tailless swept-back wings in particular are discussed on a non-mathematical basis, attention being confined to the orthodox flap type of control. The main purpose of the paper is to convey in the simplest terms possible a clear physical picture of the conditions producing loss of control power, emphasis being naturally laid upon the part played by structural wing distortion. Certain qualitative features relating to the two phenomena are also discussed. As a general introduction to the discussion on aileron reversal effects, the definition of “aileron power” in relation to the actual dynamic condition of rolling is described at some length. For elevon reversal effects on tailless aircraft the effect of wing flexibility on both “elevon power” and on trim in steady symmetric flight is considered. With the descriptive treatment adopted the analysis is of necessity broad and general but is designed to appeal to those not too familiar with the subject. The results of certain calculations on a hypothetical wing, which may be of interest, are included. A mathematical analysis for the quantitative estimation of both aileron and elevon reversal effects is given in the Appendix.


1986 ◽  
Vol 01 (05) ◽  
pp. 365-376
Author(s):  
F. ARDALAN ◽  
H. ARFAEI ◽  
J. PARVIZI

We provide a regularization procedure for loops in string theories based on the physical picture of joining and splitting strings. This procedure justifies the 1-loop finiteness of superstring theories. To find the regularization, maps from the string world-sheet to the complex plane are studied in detail.


2002 ◽  
Vol 09 (02) ◽  
pp. 153-166 ◽  
Author(s):  
Miroljub Dugić ◽  
Milan M. Ćirković ◽  
Dejan Raković

We show that modern quantum mechanics, and particularly the theory of decoherence, allows formulating a sort of a physical metatheory of consciousness. Particularly, the analysis of the necessary conditions for the occurrence of decoherence, along with the hypothesis that consciousness bears (more-or-less) well definable physical origin, leads to a wider physical picture naturally involving consciousness. This can be considered as a sort of a psycho-physical parallelism, but on very wide scales bearing some cosmological relevance.


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