Low Air Drag Surface via Multilayer Hierarchical Riblets

Correlations Between Air Drag and Movement of Water Droplets in Fibrous Media

Separation and Purification Technology ◽

10.1016/j.seppur.2021.118602 ◽

2021 ◽

pp. 118602

Author(s):

S. Neda Mehdizadeh ◽

Amir Mehdi Pasdar ◽

George G. Chase

Keyword(s):

Water Droplets ◽

Fibrous Media ◽

Air Drag

Download Full-text

An empirical relation to correct storm-time thermospheric mass density modeled by NRLMSISE-00 with CHAMP satellite air drag data

Advances in Space Research ◽

10.1016/j.asr.2008.06.016 ◽

2009 ◽

Vol 43 (5) ◽

pp. 819-828 ◽

Cited By ~ 17

Author(s):

Y.L. Zhou ◽

S.Y. Ma ◽

H. Lühr ◽

C. Xiong ◽

C. Reigber

Keyword(s):

Mass Density ◽

Empirical Relation ◽

Air Drag ◽

Champ Satellite

Download Full-text

The Axial Air-Drag of Monofilaments

Journal of the Textile Institute Transactions ◽

10.1080/19447026208659907 ◽

1962 ◽

Vol 53 (12) ◽

pp. T576-T576 ◽

Cited By ~ 6

Author(s):

A. Selwood

Keyword(s):

Air Drag

Download Full-text

The influence of cab shape on air drag of trucks

Journal of Wind Engineering and Industrial Aerodynamics ◽

10.1016/0167-6105(81)90079-9 ◽

1981 ◽

Vol 9 (1-2) ◽

pp. 77-87 ◽

Cited By ~ 8

Author(s):

A. Gilhaus

Keyword(s):

Air Drag

Download Full-text

Archery by the Apaches – implications of using the bow and arrow in hunter-gatherer communities

Documenta Praehistorica ◽

10.4312/dp.43.28 ◽

2016 ◽

Vol 43 ◽

pp. 515-525

Author(s):

Žiga Šmit

Keyword(s):

Native American ◽

Model Calculation ◽

Air Drag ◽

Old World ◽

Regression Procedure ◽

Flat Part ◽

Bow And Arrow ◽

Medium Strength ◽

Close Range ◽

Ballistic Trajectory

This review focuses on the technical and social details of production, training, and use of archery equipment by a Native American tribe, the Apaches. The study aims to understand the use of the bow in the Mesolithic and Early and Middle Neolithic societies of the Old World. The paper further describes arrow ballistics. An arrow and bow with similar dimensions and materials to those used by the Apaches was reconstructed and used in ballistic experiments. Shooting and the subsequent model calculation showed that the effective range of arrows made of reed and projected by a bow of medium strength (16–18kg) was not more than approx. 20m. Due to the initial flat part of the ballistic trajectory, such arrows were quite efficient in close-range contests. Within the model calculation, a regression procedure was introduced to determine the arrow air-drag parameters from an ensemble of shots.

Download Full-text