借喻
发表于 2025-3-23 11:08:10
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背书
发表于 2025-3-23 17:04:23
Design of Solar Powered Unmanned Biplanes for HALE Missions, requirements indicated by the US Defense Advanced Research Projects Agency (DARPA) as goals of the HALE flight, is illustrated. Such aircraft, which can operate in each year’s day, at latitudes up to 45° and altitudes up to 18 000 m, is described in details, and a flexibility analysis for different
狂乱
发表于 2025-3-23 21:39:22
The Lifting System of a PrandtlPlane, Part 1: Design and Analysis of a Light Alloy Structural Soluts of freedom; in the second one, two other parameters are adjoined in any section (areas of two spar flanges) with a total of 270 d.o.f. According to the first model, the overall weight, including the fins, is about 17.5% of the maximum takeoff weight, while, in the second one, it is reduced to 15.8
chondromalacia
发表于 2025-3-23 23:29:21
Numerical Simulation of Sailing Boats: Dynamics, FSI, and Shape Optimization,n of the adjoint problem and combined with the Free Form Deformation (FFD) method for the shape parameterization and mesh motion, is presented and discussed. Theoretical and methodological aspects are described, and the first preliminary results are reported.
intellect
发表于 2025-3-24 06:13:46
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不适
发表于 2025-3-24 08:47:57
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PHON
发表于 2025-3-24 14:45:07
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熟练
发表于 2025-3-24 14:51:44
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neutral-posture
发表于 2025-3-24 19:29:33
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Hangar
发表于 2025-3-25 03:08:12
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