Zobrazeno 1 - 10
of 4 182
pro vyhledávání: '"Specific impulse"'
Publikováno v:
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, Vol 23, Iss 2, Pp 28-39 (2024)
One of the ways to improve specific characteristics of the power plant of a launch vehicle for ladeploying payload to the near-Earth space is to provide the possibility of operation of a fixed nozzle in the design mode over the whole active leg of th
Externí odkaz:
https://doaj.org/article/eb478f0efa324f7cb36284c66bcc78aa
Autor:
V. Denefeld, H. Aurich
Publikováno v:
Defence Technology, Vol 31, Iss , Pp 130-141 (2024)
The NATO agreement STANAG 4569 defines the protection levels for the occupants of logistic and light armored vehicle. The Allied Engineering Publication, AEP-55, Volume 2 document outlines the test conditions for underbelly improvised explosive devic
Externí odkaz:
https://doaj.org/article/3b21ec4fba8b42a281ee0c3f4ed7aa0e
Publikováno v:
F1000Research, Vol 12 (2024)
Background This study compares propellant fuels’ specific thrust and impulse parameters using nanocarbon variant fuels from coconut shells and coal. Specific impulses and impulses are essential parameters that determine rocket performance. The spec
Externí odkaz:
https://doaj.org/article/a672debe071c43efbdb59666a97249c0
Publikováno v:
Aerospace, Vol 11, Iss 4, p 318 (2024)
Hybrid rocket motors have great development potential due to their outstanding thrust adjustment flexibility and long-term operation ability. However, nozzle erosion during the motor operation can cause an increase in the throat area of the nozzle, w
Externí odkaz:
https://doaj.org/article/939a19f1a8684c8eb94095bba371b94e
Publikováno v:
Defence Technology, Vol 20, Iss , Pp 162-186 (2023)
In this paper, a modified single-degree-of-freedom (SDOF) model of reinforced concrete (RC) beams under close-in explosion is proposed by developing the specific impulse equivalent method and flexural resistance calculation method. The equivalent uni
Externí odkaz:
https://doaj.org/article/b57292de770347ef9f201a9c5cc1ac23
Autor:
Nnorom Achara
Publikováno v:
Academy Journal of Science and Engineering, Vol 16, Iss 1, Pp 53-60 (2022)
What distinguishes the rocket system from airbreathing engines is that the rocket carries its own propellants, fuel and oxidants. The modern rocket was originally developed for ballistic missiles. The operation of the German V2 ballistic missile was
Externí odkaz:
https://doaj.org/article/01cb8e33f2e14101bdc5e8ea55f31dad
Autor:
A. D. Maksimov, S. A. Shustov
Publikováno v:
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, Vol 21, Iss 1, Pp 67-80 (2022)
A numerical method for thermogasdynamic calculation of low-thrust liquid rocket engines is presented. These engines are used as end organs of the system of space attitude control for nanosatellites and small spacecraft. The method is based on the use
Externí odkaz:
https://doaj.org/article/00c6f162571b407988fd114fa89f5516
Publikováno v:
Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", Vol 6, Iss 3, Pp 17-23 (2022)
A mathematical model of thermodynamic processes occurring in the arcjet thruster device with using argon for arcjet working process carring out. A comparative analysis of the results of experimental data with theoretical data has been carried out.
Externí odkaz:
https://doaj.org/article/eddf54430c3f4aaf92da2e17925bf577
Publikováno v:
Frontiers in Materials, Vol 10 (2023)
Externí odkaz:
https://doaj.org/article/6f6ab4aebb3347f5aa536aed0271784a
Publikováno v:
Frontiers in Mechanical Engineering, Vol 9 (2023)
A pre-cooled combined engine based on a closed helium (He) cycle offers high specific thrust and high specific impulse. Therefore, evaluation of the performance of such an engine is crucial for engine applications and key technology research. This st
Externí odkaz:
https://doaj.org/article/a003662ae7db42a683f12ca970c35b37