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A 727 airplane center duct inlet low speed performance confirmation model test for refanned jt8d engines, phase 2
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ting, C. T. Kaldschmidt, G. Syltebo, B. E. |
| Copyright Year | 1973 |
| Description | The results from testing of a 0.3 scale model center duct inlet (S duct) for the Pratt and Whitney Aircraft JT8D-100 engines are presented. The objective of this test was to demonstrate that the required airflow of the JT8D-100 engine (480 lb/sec as compared to 334 lb/sec for JT8D-15) can be achieved with minimum modifications to the existing 727 airplane structure at acceptable levels of total pressure recovery and distortion. Steady-state pressure recovery, steady-state pressure distortion, and dynamic pressure measurements were taken at the engine face station. Surface static pressure measurements were taken along the duct. Test results indicated that the required airflow was achieved with acceptable pressure recovery (comparable to the current 727-200 S duct). Inlet inflow angle variation within the 727 airplane operating regime (minus 5 to 5 degrees) had no effect on the inlet performance. Pressure distortion at static and forward speed at takeoff airflow conditions are within P and WA limits for the Phase II duct when equipped with vortex generators. Static crosswind operation between 10 knots and 25 knots appears feasible at full takeoff power. |
| File Size | 5234582 |
| Page Count | 134 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740009642 |
| Archival Resource Key | ark:/13960/t80k74v2b |
| Language | English |
| Publisher Date | 1973-11-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Ducted Flow Air Flow Inlet Pressure Boeing 727 Aircraft Flow Measurement Engine Inlets Inlet Flow Aerodynamic Characteristics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
