An Altitude Compensating Nozzle (ACN) enables the nozzle flow to adjust with the ambient pressure as it decreases with altitude so that the plume is never significantly over or under-expanded. The performance of ACNs can be near optimal over most of the flight. Hence, mission integrated performance with an ACN could be higher than with a Conventional Bell (CB) nozzle. The purpose is to advance the TRL of ACNs through static ground tests, and ultimately by demonstrating this technology through flight test. The primary near-term objective is to advance Dual Bell (DB) nozzle technology, and ultimately the team has plans to advance the TRL of other ACN conceptual designs (e.g. aerospike, clustered aerospike, etc.).More »
A study at MSFC shows that a 1st stage aerospike nozzle produces: Up to a 3% gain in 1st stage average Isp and Thrust. Up to a 10% payload benefit in Delta IV Medium to LEO.More »
|Organizations Performing Work||Role||Type||Location|
|Armstrong Flight Research Center (AFRC)||Lead Organization||NASA Center||Edwards, CA|
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