The liquid/gas momentum flux ratio has an important impact on the flow filed structure, shock wave intensity, and jet penetration trajectory in the jet region. Penetration depth is an important indicator of fuel atomization mixing. And the diameter of the nozzle is an important influencing factor ...
however, they can not explain the dispersing pattern in main-flow direction, i.e., actually a kind of conjugation phenomena. So,Gcnumber is put forward in this study as a criterion to
The maximum error of recoil displacement is 4.8% and the maximum error of recoil resistance is 7.4%. It is shown that the proposed buffer provides a greater damping force, tremendously decrease the peak, and effectively controls an instantaneous strong impact load, compared with existing eddy ...
SEC tubes have been selected for five U.S. and one European space program. An example of this application is the hand-held “Apollo” camera used for on-board operation and to be carried on the lunar surface by a U.S. astronaut.
aevery astronaut sleeps differently 每位宇航员不同地睡觉 [translate] aif we have mutual affection to each other, then we can live together 如果我们互相有相互影响,则我们可以在一起生活 [translate] aThe rubber polymers were divided into eight classes as described in Section 3 of this practice. ...
。FocusReading1.Thebestknownexampleofarobotinspaceisthe20meterlongremotemanipulatorsystemonboardthespaceshuttle.Ithassixdegreesoffreedomandisusuallymanuallyteleoperatedbyanastronautunderdirectvisualfeedback.Thereis,however,theabilitytohavetherobotbemovedundercomputercontrolinCartesiancoordinates. FORLISTENING 。1.3Part...
Stability design features are grouped into two categories:StaticandDynamic.Static stabilityis the initial tendency of an aircraft to return to its original flight position when it’s disturbed.Dynamic stabilityis how an airplane responds to a disturbance over time. ...
Due to the inherent working mode of rotating detonation engine (RDE), the detonation flow field has the characteristics of pressure oscillation and axial kinetic energy loss, which makes it difficult to design nozzle and i
The spray device erected in the inlet tract would have an impact on the flow resistance, so the winged spray device would be a better choice [21]; The choice of air velocity, spray angle and injection velocity can also have an influence on the loss of total pressure drop [22]. Changes...
These results show the virtual prototype is an effective approach to characterize the dynamic performance of shock absorber; which can be further optimized under multiple conditions by such simulation. Design charts are also presented, to decide the operation domain of shock absorber. Graphical abstract...