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- Article name
- Study of the effect of gas injection into the base region of a cruise engine with a truncated central body on gas dynamic characteristics of a cruise engine
- Authors
- MOSHKIN I. Yu., , ofpat@mail.ru, South Ural Federal Scientific Centre of Minerology and Eco-Geology of the Ural Division of RAS, Miass, Chelyabinsk Region, Russia
MOSEYCHUK K. U., , src@makeyev.ru, Joint Stock Company "Academician V. P. Makeyev State Rocket Centre", Miass, Chelyabinsk Region, Russia
CHIRKOV A. S., , src@makeyev.ru, Joint Stock Company "Academician V. P. Makeyev State Rocket Centre"; Federal State Autonomous Educational Institution of Higher Education "South Ural State University (National Research University)", Miass, Chelyabinsk Region, Russia; Chelyabinsk, Russia
BITKIN S. A., , src@makeyev.ru, Joint Stock Company "Academician V. P. Makeyev State Rocket Centre"; Federal State Autonomous Educational Institution of Higher Education "South Ural State University (National Research University)", Miass, Chelyabinsk Region, Russia; Chelyabinsk, Russia
- Keywords
- reusable launch vehicle / cruise engine with a central body / numerical simulation / externally expanded nozzle / gas dynamics / gas dynamic characteristics / specific thrust / gas injection / interaction of jets
- Year
- 2025 Issue 2 Pages 9 - 16
- Code EDN
- OHVAVP
- Code DOI
- 10.52190/2073-2562_2025_2_9
- Abstract
- The cruise engine of a single-stage reusable reentry launch vehicle (LV) structured from composite materials (CM) to reduce weight operates under various external conditions: the ambient pressure during the LV flight varies from atmospheric at launch to a complete vacuum in orbit and from vacuum to atmospheric one at disorbiting and landing. Under these conditions, the use of a classic Laval nozzle in engines becomes ineffective. In order to improve characteristics of the cruise engine of a single-stage reentry LV, i.e. to increase a specific thrust with limited dimensions of the nozzle, the engine provides for the use of an externally expanded ring nozzle with a truncated central body made of CM. In the modern CFD software based on the finite volume method using a three-dimensional geometry of the cruise engine nozzle, a computational domain was created, a computational grid was constructed, and gas dynamic calculations were performed for different environmental conditions depending on the flight altitude, as well as various modes of injecting the generator gas into the base region of a truncated central body with different mass flow values. The analysis and evaluation of the obtained results and dependencies were carried out.
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