Sound-level measurements of a light airplane modified to reduce noise reaching the ground
| Author: | Vogeley, A W |
|---|---|
| Year: | 1948 |
| Document Type: | N/A |
| Series: | NACA Technical Notes |
| Report Number: | NACA-TN-1647 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc54635/ |