Results 21 to 30 of about 61,329 (314)
Aerospace, 2023 This paper proposed a multi-objective, multi-disciplinary design optimization and multi-attribute evaluation method for the manned lunar lander descent stage.
Yang Liu +5 more
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CFD Analysis of a Solid Propellant Retro Rocket Motor using Ansys Fluent [PDF]
E3S Web of Conferences, 2020 A Solid propellant Retro Rocket Motor with a C-D Nozzle is analyzed using Ansys Fluent 17.1 .Steady State analysis of a retro rocket motor has been done for Viscous models like Inviscid and k-ɛ (Realizable) with air and gas as working fluids.
Anil Hemanth Varada, Jyothi U.S
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Numerical Investigation on Hybrid Rocket Motors with Star-Segmented Rotation Grain
Aerospace, 2022 A novel fuel grain configuration comprising two star-segmented grains is proposed. The effect of the rotation, mid-chamber length, and segmented position on the fuel regression rate and the combustion efficiency in hybrid rocket motors with star ...
Hui Tian +5 more
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Range and Accuracy Improvement of Artillery Rocket Using Fixed Canards Trajectory Correction Fuze
Aerospace, 2022 This paper presents a two-phase guidance and control algorithm to extend the range and improve the impact point accuracy of a 122-mm rocket using a fixed canards trajectory correction fuze. The guidance algorithm consists of a unique glide and correction
Ali Raza, Hua Wang
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Vojnotehnički Glasnik, 2008 Raketni motor pilotskog sedišta ima složen geometrijski oblik, tako da njegov potisak deluje pod određenim uglom u odnosu na ravan simetrije pilotskog sedišta.
Milorad Savković
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Ablation characteristics of insulator under high-temperature gas dual-pulse erosion
Defence Technology, 2022 This study numerically simulated and investigated the flow field characteristics of a typical dual-pulse solid rocket motor with a soft pulse separation device through thermal insulation ablation under high-temperature dual-pulse erosion.
Yang Liu +3 more
doaj +1 more source
Servo-Stabilization of Low-Frequency Oscillations in a Liquid Bipropellant Rocket Motor [PDF]
, 1953 The recent work of H. S. Tsien concerning the servostabilization of rocket motors is extended to the liquid bipropellant rocket motor. It is shown that by use of a feedback system containing a device to sense the combustion chamber pressure, a suitably ...
Cox, Dale W., Jr., Marble, Frank E.
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Estimation of internal ballistic parameters for the 107 mm rocket motor conceptual design
Defense and Security StudiesThe demand for solid propellant rocket motors does not seem to fade, regardless of constant improvements in rocket technology. To make modifications that will result in improved design, it is crucial to use already existing motor models.
Ilma Subotic
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Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space
Advanced Materials, EarlyView.In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz +17 more
wiley +1 more source
Steerable solid propellant rocket motor Patent [PDF]
, 1964 Steerable solid propellant rocket motor adapted to effect payload orientation as multistage rocket stage or reduce velocity as ...
Raggio, C. W., Jr.
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