The “Gratio 2” wind tunnel test in Oriental Space was successfully completed, and the results of the rocket’s aerodynamic shape design were verified – Passionategeekz

Passionategeekz June 22, according to Oriental Space, the Gravity 2 launch vehicle was at the beginning of the yearFully transfer to the engineering development stagehas entered the stage of complete product sets and various large-scale ground tests. Previously, the “Gratio 2” wind tunnel test of the medium and large-scale recyclable liquid carrier rocket independently developed by Oriental Space was tested.Achievement of a complete successThe results of the rocket aerodynamic shape design simulation have been fully verified.

According to reports, when rockets fly across sound speed, airflow separation, shock wave oscillation, shock wave/boundary layer interference will usually occur in areas with sharp changes in cross-section (such as the shoulders of fairing cones, inverted cones, etc.), resulting in large pressure pulsations.

The pulsation pressure may stimulate the overall bending vibration or local vibration of the rocket, causing serious vibration of the arrow body, resulting in large dynamic loads and severe aerodynamic noise.Not only will it destroy the arrow body structure, it may also enter the interior of the fairing by acoustic transmission.affects the normal operation of internal instruments and causes damage to satellites. Therefore, the measurement and analysis of pulsation pressure is an important task in rocket load design and structural design.

Passionategeekz learned from Oriental Space that the “Gratio 2” fairing has a diameter of 5.2m and an arrow body with an arrow body of 4.2m. There are many kinds of projections of various types. During the design stage, a large number of simulation and predicate work was carried out to identify the aerodynamic characteristics of the rocket in detail. In order to refine the identification of the environmental conditions in the satellite fairing,This test adds pulsating pressure test。

By conducting cross-sonic wind tunnel testing on the aerodynamic profile of the first-stage flight section of the “Gratio 2” to comprehensively obtain pulsating pressure characteristic data of typical surface characteristic points, covering detailed indicators such as incoming flow parameters, root mean square pulsing pressure, cross-section synthesis pulsing pressure, etc., it provides solid data support for the “Gratio 2” rocket load and mechanical environment design, ensuring the scientificity and reliability of its design.

Public information shows that Oriental Space was established in 2020 and mainly engaged in space transportation. It is a launch vehicle and new aerospace transport vehicle design and manufacturing service company. The company has developed the “Grain” series of launch vehicles to create series, diversified and flight-based aerospace transportation products such as one-time use, recyclable and reusable, and manned flights.

Advertising statement: The external redirect links (including, not limited to, hyperlinks, QR codes, passwords, etc.) contained in the article are used to convey more information and save selection time. The results are for reference only. All articles from Passionategeekz include this statement.