The Multidisciplinary Optimization (MDO) Branch at NASA Langley Research Center is investigating frameworks for supporting multidisciplinary analysis and optimization research. An optimization framework can improve the design process while reducing time and costs. A framework provides software and system services to integrate computational tasks and allows the researcher to concentrate more on ...

Aerospike nozzles represent an interesting solution for Single-Stage-To-Orbit or clustered launchers owing to their self-adapting capability, which can lead better performance compared classical nozzles. Furthermore, they provide thrust vectoring in several ways. A simple consists of applying differential throttling when multiple combustion chambers are used. An alternative is represented by fl...

This paper represents an overview of the activities carried out in the framework of RTO/AVT Working Group 10, Subgroup 1, dedicated to plug nozzle aerothermodynamics and performance. The subgroup worked out two main objectives: i) thorough understanding of the flow physics of plug nozzles trough literature review and recent experiments conducted in Europe and USA; ii) definition of CFD test cas...

The aerospike engine was first devised in the early 1960s where it provided new means of reaching orbit a single stage. paper aimes to demonstrate viability technology by showcasing increased nozzle thrust efficiency over conventional bell nozzle. Various truncations were applied and each subjected two conditions, an over-expansion near optimum condition. contour developed using simple approxim...

A series of wind tunnel tests have been performed on an aerospike-protected missile dome at a Mach number of 6 to obtain quantitative surface pressure and temperature-rise data, as well as qualitative flow visualization data. These data were used to determine aerospike concept feasibility and will also provide a database to be used for calibration of computational fluid dynamics codes. Data wer...