Requirements Development and Test Results of High Aspect Ratio Trace Contaminant Control, Vehicle Level Post Fire Recovery and Reactive Plastic Carbon Dioxide Control Systems

2011 ◽  
Author(s):  
David Zuniga ◽  
Barry Finger ◽  
Walter Harrington
Keyword(s):  
Carbon Dioxide ◽  
Aspect Ratio ◽  
Control Systems ◽  
High Aspect Ratio ◽  
Test Results ◽  
Trace Contaminant ◽  
Contaminant Control ◽  
Requirements Development ◽  
Plastic Carbon

Fabrication and Testing of Micro Corona Motor and Micro Gas Bearings

2004 ◽  
Author(s):  
Daejong Kim ◽  
Sanghoon Lee ◽  
Michael D. Bryant
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Geometric Constraints ◽  
Test Results ◽  
X Ray ◽  
Gas Bearings ◽  
Performance Requirements ◽  
Tall Structures ◽  
Gas Bearing ◽  
Bearing System

The paper introduces fabrication processes of a micro corona motor and micro gas bearings via X-ray lithography. The micro corona motor was fabricated using a membrane-less built-on X-ray mask. The motor principle requires axially thick sharp stator electrodes. Therefore, X-ray lithography was adopted for precise, high aspect ratio characteristics. To minimize diffraction, a built-on X-ray mask (conformal mask) technique was employed with negative toned SU-8 photo resist. This technique may be suitable for fast fabrication of prototypes or very tall structures, which can be largely affected by printing gaps. Micro gas bearings were fabricated as a viable bearing system for the micro corona motor. Timembrane mask was fabricated to meet the strict performance requirements and geometric constraints of the micro gas bearing. Test results of the micro gas bearings and micro corona motor are also presented.

Investigation of the Possibilities of Rotating Cylinders as an Auxiliary Lift Device

1964 ◽  
Vol 68 (647) ◽  
pp. 777-780
Author(s):  
J. E. Chacksfield
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Experimental Studies ◽  
Rotating Cylinder ◽  
Test Results ◽  
Major Research ◽  
Drag Coefficients ◽  
Magnus Effect ◽  
The One ◽  
Gains And Losses

The following is an attempt to show the gains and losses achieved when a rotating cylinder is used to create additional lift during the take-off and landing of an aircraft.A hundred-year old theory lies behind the results (the “Magnus” effect), which, up to the present day has not been put to practical use in flight for increasing CL. Many proposals and tentative designs have been studied at major Research Establishments, notably A.V.A. Gottingen and the RAE but experimental studies on aircraft converted for the purpose have yet to be made.Limited test results show that the CL on a rotating cylinder can be as great as 15 providing that sufficient care is taken to approach infinite aspect ratio by means of end-plates on a high aspect ratio cylinder. The one great disadvantage with the cylinder is the high drag coefficients produced. However, there seems no reason why a fairing should not be placed in the wake to reduce the drag to that corresponding to a blunt-nosed thick aerofoil section.

scholarly journals Development of an Amine-based System for Combined Carbon Dioxide, Humidity, and Trace Contaminant Control

2005 ◽  
Author(s):  
Tim Nalette ◽  
Julie Reiss ◽  
Tom Filburn ◽  
Eric Mahan ◽  
Thomas Seery ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Trace Contaminant ◽  
Contaminant Control
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