PRESSURE TEST ON A 0.04-SCALE MODEL OF THE SATURN V LAUNCH VEHICLE AT MACH NUMBERS FROM 0.60 THROUGH 1.45

1966 ◽  
Author(s):  
T. R. Brice ◽  
T. M. Perkins ◽  
J. E. Robertson
Keyword(s):  
Launch Vehicle ◽  
Scale Model ◽  
Pressure Test ◽  
Mach Numbers

Numerical and experimental study of internal pressure behaviour of integrated and non-integrated weft-knitted reinforced composite elbows

2021 ◽  
pp. 002199832199072
Author(s):  
Maryam Zeynivand Mojarrad ◽  
Hadi Dabiryan ◽  
Amir Masoud Rezadoust ◽  
Hooshang Nosraty
Keyword(s):  
Experimental Study ◽  
Internal Pressure ◽  
Scale Model ◽  
Knitted Fabric ◽  
Plaster Mold ◽  
Impregnation Method ◽  
Multi Scale ◽  
Reinforced Composite ◽  
Weft Knitted Fabric ◽  
Pressure Test

This research aims to study the internal pressure behaviour of integrated and non-integrated composite elbows. For this purpose, weft-knitted integrated preforms were produced on the CMC-330-TC Flat knitting machine. Composite elbows reinforced with integrated weft-knitted preform were fabricated using the bladder molding technique. In addition, the non-integrated composite elbows were provided by wrapping the weft-knitted fabric on a plaster mold and hand lay-up impregnation method. To perform the pressure test, a fixture was designed and manufactured. Produced samples were subjected to the internal pressure test. Experimental results show that integrated composite elbow has higher hydrostatic pressure resistant. The internal pressure behaviour of integrated composite was simulated using the multi-scale model. Results showed that integrated composite elbow has a higher resistance against internal pressure than non-integrated composite elbows, so that the integrated elbows failed at 12.5-bar pressure, while the non-integrated elbow failed at 9.5-bar pressure.

Scale model tests for acoustic prediction and reduction of epsilon launch vehicle at lift-off

2012 ◽  
Vol 132 (3) ◽  
pp. 1992-1992
Author(s):  
Seiji Tsutsumi ◽  
Tatsuya Ishii ◽  
Kyoichi Ui ◽  
Sinichiro Tokudome ◽  
Kei Wada
Keyword(s):  
Launch Vehicle ◽  
Model Tests ◽  
Scale Model ◽  
Lift Off

Results of scale model acoustic tests using supersonic cold jets for H3 launch vehicle

2016 ◽  
Vol 140 (4) ◽  
pp. 3043-3043
Author(s):  
Wataru Sarae ◽  
Atsushi Sawada ◽  
Keita Terashima ◽  
Takanori Haga ◽  
Seiji Tsutsumi ◽  
...  
Keyword(s):  
Launch Vehicle ◽  
Scale Model

scholarly journals Numerical simulation over a multi-body launch vehicle module at various transonic Mach numbers

2017 ◽  
Vol 45 (1) ◽  
pp. 9-15 ◽  
Author(s):  
S. Rathnavel ◽  
Dipankar Das ◽  
Bruce Rose ◽  
Haroon Rasheed
Keyword(s):  
Numerical Simulation ◽  
Launch Vehicle ◽  
Mach Numbers ◽  
Multi Body

Modeling Within-Person Variance in Reaction Time Data of Older Adults

GeroPsych ◽  
2011 ◽  
Vol 24 (4) ◽  
pp. 169-176 ◽  
Author(s):  
Philippe Rast ◽  
Daniel Zimprich
Keyword(s):  
Reaction Time ◽  
Cognitive Aging ◽  
Reaction Times ◽  
Reaction Time Task ◽  
Reaction Time Data ◽  
Scale Model ◽  
Time Data ◽  
Time Task ◽  
The Mean ◽  
Second Wave

In order to model within-person (WP) variance in a reaction time task, we applied a mixed location scale model using 335 participants from the second wave of the Zurich Longitudinal Study on Cognitive Aging. The age of the respondents and the performance in another reaction time task were used to explain individual differences in the WP variance. To account for larger variances due to slower reaction times, we also used the average of the predicted individual reaction time (RT) as a predictor for the WP variability. Here, the WP variability was a function of the mean. At the same time, older participants were more variable and those with better performance in another RT task were more consistent in their responses.

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