|Table of Contents|

Influence analysis of RBCC ejector mode performance on transportation capacity of launch vehicle(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2020年05期
Page:
42-47
Research Field:
研究与设计
Publishing date:

Info

Title:
Influence analysis of RBCC ejector mode performance on transportation capacity of launch vehicle
Author(s):
ZHANG Fan1; ZHANG Huiqiang2
(1.China Academy of Launch Vehicle Technology, Beijing 100076, China; 2.School of Aerospace Engineering, Tsinghua University, Beijing 100084, China)
Keywords:
RBCC;  ejector mode performance;  transportation capacity;  two-stage-to-orbit launch vehicle;  payload
PACS:
V412
DOI:
-
Abstract:
In order to provide a reference for the research on ejecting technology of RBCC, as well as balancing the performance and realizability, the variation law of the transportation capacity for TSTO launch vehicle under different ejecting mode performance was studied.The configuration of the TSTO launch vehicle was designed, and the flight profile was given.Then the TSTO transportation capacity to low-earth-orbit at 180 km was calculated.The results show that when the propulsion system is set as the baseline values, 4.409 t payload can be delivered into 180 km LEO from the equatorial orbit for 150 t launch vehicle.The payload increases along with the increase of specific impulse or thrust in ejector mode.Considering the realizability of specific impulse and the sensitivity of the payload to it, the larger specific impulse of the ejector mode is not the better, and there is a reasonable value range of specific impulse.For the TSTO launch vehicle with RBCC engine, the reasonable and effective range of specific impulse is between 300～400 s in ejector mode.It is a more reasonable choice to increase the thrust in ejection mode. Thrust should be as big as possible in ejector mode within a certain range.When the thrust is higher than a certain value, the payload gain becomes smaller and smaller along with the increase of thrust.

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Last Update: 2020-10-20