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Volcano earthquake report for Friday, 10 Jul 2026
• Moderate mag. 4.2 earthquake - 133 km northwest of Ternate, Kota Ternate, N...
• World Earthquake Report for Friday, 10 July 2026
• Moderate mag. 4.6 earthquake - 17 km southwest of Comalapa, Estado de Chiap...
• Moderate mag. 4.1 earthquake - Olyutorskiy Rayon, 47 km northwest of Tilich...
• Moderate mag. 4.0 earthquake - Hawke's Bay, New Zealand, on Saturday, Jul 1...
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#558158
Wed 29 Apr 2020 06:45:PM
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Joined: Feb 2001
Posts: 678,976
Launch Director
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OP
Launch Director
Joined: Feb 2001
Posts: 678,976 |
Abstract: Electric-motor powered aircraft possess the ability to operate with efficient energy delivery, but lack the operational range of internal combustion engine powered aircraft. This range limitation requires the use of high aspect ratio, thin-chord wings to minimize aerodynamic drag losses, which results in highly loaded composite spar structures. High aspect ratio wings are required to increase mission durations for a NASA-developed experimental multi-rotor electric powered aircraft denoted as ... Source: Structural Analysis and Performance-Based Validation of a Composite Wing Spar
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