| Download | - View final version: Summary of phase II of inlet spray testing for Rolls Royce Canada (PDF, 21.5 MiB)
|
|---|
| DOI | Resolve DOI: https://doi.org/10.4224/40003709 |
|---|
| Author | Search for: Davison, Craig R.1; Search for: Galeote, Brian1; Search for: Mings, Victor1 |
|---|
| Affiliation | - National Research Council Canada. NRC Institute for Aerospace Research
|
|---|
| Format | Text, Technical Report |
|---|
| Physical description | 89 p. |
|---|
| Subject | spraying; jet engines; testing |
|---|
| Abstract | Testing was completed for Rolls Royce Canada to determine the effect of surface treatments on the inlet guide vanes on reducing the droplet sizes at the exit of the test rig. The test rig represented a 40° section of an inlet to a Rolls-Royce Trent 60 engine. The exit of the test section simulated the inlet to the first compressor stage and the droplet sizes were characterised at this point with a Malvern Spraytec laser diffraction instrument.
The following surface treatments were tested at two inlet guide vane positions, 20° and 0°:
1. Hydrophobic coating
2. Hydrophilic coating
3. High serrations on trailing edge
4. Medium serrations on trailing edge
5. Low serrations on trailing edge
6. Combination of high serration with hydrophobic coating
7. Combination of high serration with hydrophobic coating on blade but with coating removed from serrations
A test was also performed to assess the influence of the inlet strut on the droplet size. The inlet strut was found to shed large droplets but in a small spatial area. There was no clear overall reduction in droplet size for any of the surface treatments. Improvements were seen under some test conditions but were made worse under others. Analysis of the results also revealed that the location of the peak droplet sizes may be shifted by the surface treatments and an increase in geometric fidelity should be used in future tests to determine if changes are actual variations in droplet size or if the shed droplets have shifted spatially to a position that is not being measured. |
|---|
| Publication date | 2011-04-29 |
|---|
| Publisher | National Research Council Canada |
|---|
| Series | |
|---|
| Language | English |
|---|
| Peer reviewed | No |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 39a357d0-6be8-497e-b354-8e1c8d5c93c3 |
|---|
| Record created | 2025-09-22 |
|---|
| Record modified | 2025-11-03 |
|---|
