| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| hypersonic airbreathing propulsion pdf | 0.36 | 1 | 8381 | 45 | 38 |
| hypersonic | 1.62 | 0.5 | 9982 | 98 | 10 |
| airbreathing | 0.29 | 0.5 | 7204 | 78 | 12 |
| propulsion | 0.53 | 0.6 | 2619 | 38 | 10 |
| 1.26 | 0.5 | 5103 | 78 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| hypersonic airbreathing propulsion pdf | 0.2 | 1 | 3328 | 2 |
| hypersonic airbreathing propulsion software | 0.81 | 0.4 | 1658 | 56 |
| hypersonic airbreathing propulsion | 0.76 | 0.5 | 4368 | 51 |
| hypersonic airbreathing propulsion heiser pdf | 0.48 | 0.5 | 3015 | 93 |
| hypersonic airbreathing propulsion heiser | 0.74 | 0.1 | 3747 | 85 |
| hypersonic airbreathing propulsion aiaa | 1.37 | 0.1 | 8075 | 98 |
| propulsion systems for hypersonic flight | 0.77 | 0.3 | 634 | 31 |
| air breathing electric propulsion | 0.41 | 0.6 | 7954 | 87 |
| high-speed air-breathing propulsion | 0.56 | 0.7 | 6184 | 15 |
| air breathing propulsion system | 0.15 | 0.7 | 7142 | 13 |
| air breathing hypersonic vehicles | 1.11 | 0.8 | 9424 | 81 |
| what is air breathing propulsion | 1.92 | 0.1 | 4872 | 77 |
| hypersonic air breathing weapon | 0.43 | 0.1 | 8539 | 16 |
| hypersonic air-breathing weapon concept | 0.72 | 0.1 | 5615 | 97 |
| atmosphere-breathing electric propulsion | 1.71 | 0.4 | 615 | 54 |
| flexible air-breathing hypersonic vehicle | 1.29 | 1 | 8989 | 45 |
