Performance Characteristics of Clustered Nozzles
Abstract
This is an experimental evaluation of the thrust performance of 3 sets of clustered, three-dimensional, converging-diverging, cold flow supersonic nozzles. A cluster of 2, 4 and 6 nozzles were designed and fabricated. Each cluster assembly has the same geometry in that their area ratio, expansion ratio, and total throat area is the same. A single nozzle with the same geometry and total throat area was used to evaluate the creditability of the testing procedure and the performance of the 3 sets of clustered nozzles. The thrust performance of each nozzle cluster was evaluated by comparison of the measured thrust coefficient of the cluster to that of a single nozzle. The nozzle with the highest thrust coefficient was the cluster of 2 nozzles. Its performance was closely followed by the cluster of 4 nozzles. The nozzle with the lowest thrust coefficient was the cluster of 6 nozzles. The results of this study indicate that the clustering of nozzles improves the thrust performance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1981
- Accession Number
- ADA111130
Entities
People
- David V. Hibson
Organizations
- Air Force Institute of Technology