Unsteady Surface Pressures on the Space Launch System Block 1B Cargo Liftoff Configuration

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Unsteady Surface Pressures on the Space Launch System Block 1B Cargo Liftoff Configuration

Lee J Mears / Patrick R Shea / Jesse G Collins / Morgan A Walker / Jeremy T Pinier / Pourya Nikoueeyan / Marvin Perry / John Strike / Benjamin Wimpenny / Michael D Hind / ... [more]

Abstract

A 1.75%-scale model of the NASA Space Launch System Block 1B Cargo vehicle was tested at the NASA Langley Research Center 14- by 22-Foot Subsonic Tunnel. These experiments provided a test bed for validating unsteady surface pressure measurements acquired via lengths of pressure tubing and an ESP pressure scanner. Pressure was measured using an azimuthal array of pressure taps located on the nose of the Block 1B Cargo vehicle. Unique flow physics were observed in the wind tunnel test, especially the interaction between the launch vehicle and the support tower, which produced strong oscillations that were absent in the vehicle-alone configuration. It is suspected that a wake interaction produced resonant flow response when the tower is immediately downstream of the vehicle, and coherent pressure fluctuations were observed at all pressure taps in the azimuthal array.

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Document information

Title :

Unsteady Surface Pressures on the Space Launch System Block 1B Cargo Liftoff Configuration

Contributors:

Lee J Mears (author) / Patrick R Shea (author) / Jesse G Collins (author) / Morgan A Walker (author) / Jeremy T Pinier (author) / Pourya Nikoueeyan (author) / Marvin Perry (author) / John Strike (author) / Benjamin Wimpenny (author) / Michael D Hind (author)

Conference:

AIAA AVIATION Forum and Exposition 2022 ; 2022 ; Chicago, IL, US

Type of media :

Conference paper

Type of material :

No indication

Language :

English

Keywords :

Aerodynamics