Document Details
PURL
(965 K)
Title:
Selection of JTN-11 Nozzle
Author(s):
Larson, J. W. [Pratt and Whitney Aircraft, Middletown, CT (United States)]
Document Type:
REPORT
Publication Date:
1960 Jul 13
Declassification Date:
2018 Dec 19
Declassification Status:
Declassified
Document Pages:
4 p.
Accession Number:
CNLM2747
Document Number(s):
CNLM-2747
Originating Research Org.:
Pratt and Whitney Aircraft, Middletown, CT (United States)
OpenNet Entry Date:
2023 Dec 20
OpenNet Modified Date:
2024 Nov 12
Description/Abstract:
The attached graph shows the JTN-11 thrust variation with exhaust nozzle area at several subsonic flight conditions for the Convair application. The throat area used in the present engine performance estimation is held constant at 5.33 square feet for nuclear heat operation. The thrust penalty for utilizing a fixed position nozzle is 1.7 percent at Mach 0.9 at 36,090 feet, and at Mach 0.6 at 25,000 feet. The thrust penalty is negligible at the other flight conditions.