Landing response of aircraft with optimal anti-skid braking

1995 ◽  
Vol 181 (3) ◽  
pp. 401-416 ◽  
Author(s):  
D. Yadav ◽  
C.V.K. Singh
Keyword(s):  
Landing Response

scholarly journals Parametric Analysis on Landing Gear Strut Friction of Light Aircraft for Touchdown Performance

2021 ◽  
Vol 11 (12) ◽  
pp. 5445
Author(s):  
Shengyong Gan ◽  
Xingbo Fang ◽  
Xiaohui Wei
Keyword(s):  
Response Surface ◽  
Energy Absorption ◽  
Landing Gear ◽  
Surface Model ◽  
Absorption Properties ◽  
Surface Method ◽  
Design Variables ◽  
Landing Impact ◽  
Landing Response ◽  
Parametric Studies

The aim of this paper is to obtain the strut friction–touchdown performance relation for designing the parameters involving the strut friction of the landing gear in a light aircraft. The numerical model of the landing gear is validated by drop test of single half-axle landing gear, which is used to obtain the energy absorption properties of strut friction in the landing process. Parametric studies are conducted using the response surface method. Based on the design of the experiment results and response surface functions, the sensitivity analysis of the design variables is implemented. Furthermore, a multi-objective optimization is carried out for good touchdown performance. The results show that the proportion of energy absorption of friction load accounts for more than 35% of the total landing impact energy. The response surface model characterizes well for the landing response, with a minimum fitting accuracy of 99.52%. The most sensitive variables for the four landing responses are the lower bearing width and the wheel moment of inertia. Moreover, the max overloading of sprung mass in LC-1 decreases by 4.84% after design optimization, which illustrates that the method of analysis and optimization on the strut friction of landing gear is efficient for improving the aircraft touchdown performance.

Plasticity of the landing response of Drosophila melanogaster

1991 ◽  
Vol 169 (3) ◽  
Author(s):  
Frank-Martin Waldvogel ◽  
Karl-Friedrich Fischbach
Keyword(s):  
Drosophila Melanogaster ◽  
Landing Response

Dynamic Landing Response Analysis of a Flexible Tailless Delta Wing Aircraft

2012 ◽  
Vol 4 (3-4) ◽  
pp. 103-118 ◽  
Author(s):  
P. Suresh ◽  
Nesar Siddesh ◽  
G. Radhakrishnan
Keyword(s):  
Delta Wing ◽  
Response Analysis ◽  
Landing Response

The effect of human presence on the behaviour of tsetse (Glossina spp.) (Diptera, Glossinidae) near a stationary ox

1976 ◽  
Vol 66 (1) ◽  
pp. 173-178 ◽  
Author(s):  
J. W. Hargrove
Keyword(s):  
Glossina Pallidipes ◽  
Fold Increase ◽  
Human Presence ◽  
Landing Response

AbstractA method is described whereby tsetse visiting a stationary ox can be observed through a one-way glass screen in the presence or absence of man. Under the latter condition six times as many adults of Glossina pallidipes Aust. perch and feed on the ox. In G. morsitans Westw. most flies land in the head-down position and are unaffected by man's presence, but in the absence of man there is a four-fold increase in the number which land and feed in the head-up position. Calculations indicate that in the absence of man virtually all G. pallidipes adults attracted to the ox alight on it, and nearly all attempt to feed. Man's presence not only repels many tsetse completely but also inhibits the landing response of many of those that do approach the ox.

Responses of Glossina morsitans morsitans Westwood and G. pallidipes Austen (Diptera: Glossinidae) to the skin secretions of oxen

1990 ◽  
Vol 80 (1) ◽  
pp. 91-97 ◽  
Author(s):  
M.L. Warnes
Keyword(s):  
Glossina Morsitans Morsitans ◽  
Active Components ◽  
Glossina Morsitans ◽  
Phenolic Fraction ◽  
Baited Traps ◽  
Landing Response ◽  
Acidic Fraction ◽  
Skin Secretions ◽  
Tsetse Attractants

AbstractIn Zimbabwe, catches of Glossina morsitans morsitans Westwood and G.pallidipes Austen at odour baited traps were increased in the presence of residues of a solution of the skin secretions of oxen (hereafter sebum) by 80% and 29% respectively, and catches at F3 traps were significantly increased when sebum was presented on adjacent screens. Testing of fractions of sebum revealed active components(s) in the phenolic and non-acidic fractions but not in the acidic fraction. Furthermore, the activity of the phenolic fraction could not be explained by the presence of the known phenolic tsetse attractants. The effect of sebum was to attract more flies to the target rather than to induce a landing response in a higher proportion of attracted flies. Whether or not tarsal contact responses are involved remains conjectural. However, targets that were electrified over only one quarter of the surface caught more than one quarter the catch of targets electrified over all the surface both with and without sebum, indicating that many tsetse habitually alight more than once on baited targets. Data on the catches of other Diptera are also presented

Sign in / Sign up

Export Citation Format

Share Document