Joseph Fletcher, a retired Air Force pilot whowas at that timeservingas director oftheOffice of PolarPrograms in the U.S. National Science Foundation. The idea was to fly large con- ventionalaircraft (C-141,C-5), fromSouth America or from New Zealand, either direct to the interior of ...
Air Force T&E Days 2009, Albuquerque, NM, USA, 10–12 February 2009. 7. Falempin, F.; Serre, L. Possible military application of high-speed airbreathing propulsion in the XXIst century—An European vision. In Proceedings of the AIAA/ICAS International Air and Space Symposium and Exposition:...
Circumferential Excitation According to the excitation principle, two force loads are added sequentially to two adjacent zones with equal axial length of /4, where is the wavelength. The two loads have the same time duration, but with a time shift of T0/4 one after the other, where T0 is ...
This results in an increase in the lift force due to the generation of the downwash effect. According to a computational experiment by Montanya and Marshall [24], the lift coefficient of a NASA SC (2)-0414 airfoil with a 30 degree flap angle is increased by 30% compared to the zero ...
The key concept of the discrete element method is to assume the research object as a set of completely rigid or deformable blocks or spheres, and to simulate the force, displacement, and deformation of the assembly by defining the mechanical contact behavior between the blocks or spheres. Like ...
Influence of traffic force on pollutant dispersion of CO, NO and particle matter (PM 2.5) measured in an urban tunnel in Changsha, China. Tunn. Undergr. Space Technol. 2015, 49, 400–407. [CrossRef] 4. Raaschou-nielsen, O.; Andersen, Z.J.; Jensen, S.S.; Ketzel, M.; Sorensen,...