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Small magnitude 3.6 earthquake strikes near Great Falls, Cascade County, Montana, USA
• Volcano earthquake report for Friday, 18 September 2026
• Possible earthquake reported minutes ago near Great Falls, Montana, USA
• Magnitude 4.6 earthquake strikes near Ponce, Segundo Barrio, Ponce Municipi...
• Small magnitude 3.4 earthquake strikes near Skegness, Lincolnshire, England...
• World Earthquake Report for Friday, 18 September 2026
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#527026
Fri 04 Oct 2019 11:30:AM
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Joined: Feb 2001
Posts: 678,977
Launch Director
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Launch Director
Joined: Feb 2001
Posts: 678,977 |
Abstract: This short white paper is aimed at providing an overview of design considerations for airfoil choices for rotor applications in the Martian atmosphere, at very low chord-based Reynolds number flows, around Rec = O (103 -104). The low Reynolds number typical of rotorcraft operation in the Martian atmosphere reduces the rotor lifting force and efficiency, which is only partially compensated for by a lower gravity on Mars. Additionally, the low temperature and largely CO2 based atmosphere of Mar... Source: Airfoil Selection for Mars Rotor Applications
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