Results 251 to 260 of about 410,560 (293)

DNS and Experimental Assessment of Shark-Denticle-Inspired Anisotropic Porous Substrates for Drag Reduction. [PDF]

Biomimetics (Basel)
Cooper BK, Pinto S, Hong H, Zhang Y, Cattafesta L, Wu W.   +5 more
europepmc   +1 more source

Tumbleweed-inspired robots with hybrid mobility for terrestrial exploration. [PDF]

Nat Commun
Manoharan S, Lemecho B, Fadlelmula MM, Subramanian V.   +3 more
europepmc   +1 more source

Exploring Pain Phenotyping in Cervicogenic Headache Management. [PDF]

Curr Pain Headache Rep
Cropes M, Deacon A, Nelson EO, Deuel D, Sandgren A, Abd-Elsayed A, Houdek T.   +6 more
europepmc   +1 more source

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Thrust stand for low-thrust liquid pulsed rocket engines

Review of Scientific Instruments, 2010
A thrust stand is developed for measuring the pulsed thrust generated by low-thrust liquid pulsed rocket engines. It mainly consists of a thrust dynamometer, a base frame, a connecting frame, and a data acquisition and processing system. The thrust dynamometer assembled with shear mode piezoelectric quartz sensors is developed as the core component of ...
Qin, Xing, Jun, Zhang, Min, Qian, Zhen-yuan, Jia, Bao-yuan, Sun   +4 more
openaire   +2 more sources

Shaping low-thrust trajectories with thrust-handling feature

Advances in Space Research, 2018
Abstract Shape-based methods are becoming popular in low-thrust trajectory optimization due to their fast computation speeds. In existing shape-based methods constraints are treated at the acceleration level but not at the thrust level. These two constraint types are not equivalent since spacecraft mass decreases over time as fuel is expended.
Ehsan Taheri, Ilya Kolmanovsky, Ella Atkins   +2 more
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Constrained low-thrust guidance

11th Aerospace Sciences Meeting, 1973
Constrained low thrust guidance algorithms for three axis and spin-stabilized, constant power, solar electric propelled spacecraft on fixed time rendezvous missions are developed. A 'bang-bang' type of minimum-propellant thrust program is used. Control constraints arise from the specification that the thrust vector must remain fixed relative to the ...
M. UNGS, A. KORNHAUSER, P. LION
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Low-energy, low-thrust transfers to the Moon

Celestial Mechanics and Dynamical Astronomy, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MINGOTTI, GIORGIO PIETRO, TOPPUTO, FRANCESCO, BERNELLI ZAZZERA, FRANCO   +2 more
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Optimal low-thrust rendezvous control.

AIAA Journal, 1969
A study is made of the coplanar rendezvous maneuver between a thrusting vehicle and a passive vehicle in an elliptic orbit. In the terminal phase of rendezvous, where the equations of relative motion can be linearized, an analytic solution for the fuel optimal thrust program is found for power-limited vehicles when the time to maneuver is fixed.
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