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Flight investigation of installation effects on a plug nozzle with a series of boattailed primary shrouds installed on an underwing nacelle
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Head, V. L. |
| Copyright Year | 1974 |
| Description | Several variations of a boattailed shroud for a 10 deg conical plug nozzle were tested using an F-106B aircraft for Mach 0.6 to 1.3. The data were obtained so that the tradeoff between boattail and plug size could be studied for an underwing nacelle location. The nozzles were tested with J85-GE-13 turbojet engine, and the data were compared to previous flight results of installed plug nozzles. Boattail area varied from 31 to 66 percent of the nacelle area. The effect of increasing projected boattail area was to increase the gross thrust coefficient in the same way as from isolated data for flight Mach numbers below 0.85. The highest gross thrust coefficient (0.958) was obtained at Mach 0.95 with a long circular arc shroud configuration with a very small amount of secondary air flow. |
| File Size | 1826338 |
| Page Count | 32 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740008377 |
| Archival Resource Key | ark:/13960/t3324q91z |
| Language | English |
| Publisher Date | 1974-02-01 |
| Access Restriction | Open |
| Subject Keyword | Propulsion Systems Flight Tests Plug Nozzles Shrouded Nozzles Airframes Boattails Nozzle Thrust Coefficients Installing Nacelles Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
