Loading...
Please wait, while we are loading the content...
Similar Documents
Improved design of a high response slotted plate overboard bypass valve for supersonic inlets
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hiller, K. W. Mehmed, O. Webb, J. A. |
| Organization | The National Aeronautics and Space Administration (NASA) |
| Copyright Year | 1973 |
| Description | The electrohydraulically actuated slotted-plate bypass valve used to control the position of the normal shock during wind-tunnel investigations of supersonic inlets also has proven to be a valuable device for determining inlet dynamics and creating airflow disturbances. Operation of previous valves at high frequencies (to 100 Hz) for extended testing has resulted in numerous failures. An improved bypass-valve design is presented which increases the cyclic tolerance of the device considerably over past designs. The use of dynamic limit criteria to obtain an optimum actuator-piston size results in a frequency response which is flat within + or - 3 decibels to 120 Hz for a peak-to-peak variation of 20 percent of full area. |
| Abstract | The electrohydraulically actuated slotted-plate bypass valve used to control the position of the normal shock during wind-tunnel investigations of supersonic inlets also has proven to be a valuable device for determining inlet dynamics and creating airflow disturbances. Operation of previous valves at high frequencies (to 100 Hz) for extended testing has resulted in numerous failures. An improved bypass-valve design is presented which increases the cyclic tolerance of the device considerably over past designs. The use of dynamic limit criteria to obtain an optimum actuator-piston size results in a frequency response which is flat within or - 3 decibels to 120 Hz for a peak-to-peak variation of 20 percent of full area. |
| File Size | 11166580 |
| File Format | |
| Alternate Webpage(s) | http://www.archive.org/details/nasa_techdoc_19730016370 |
| Archival Resource Key | ark:/13960/t4nk4311b |
| Language | English |
| Publisher Date | 1973-06-01 |
| Access Restriction | Open |
| Subject Keyword | Auxiliary Systems Aircraft Control Flight Tests Longitudinal Stability P-1127 Aircraft Thrust Vector Control Vertical Takeoff Aircraft Aerodynamic Configurations Aircraft Performance Data Processing 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 |
