| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| hypersonic airbreathing propulsion software | 0.82 | 0.7 | 4285 | 96 | 43 |
| hypersonic | 1.88 | 1 | 1639 | 3 | 10 |
| airbreathing | 1.12 | 0.9 | 3132 | 14 | 12 |
| propulsion | 1.38 | 0.6 | 3347 | 55 | 10 |
| software | 1.07 | 0.9 | 8801 | 98 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| hypersonic airbreathing propulsion software | 0.58 | 0.7 | 6989 | 69 |
| hypersonic airbreathing propulsion pdf | 0.72 | 0.7 | 7538 | 67 |
| hypersonic air-breathing propulsion | 0.11 | 0.8 | 7929 | 14 |
| hypersonic airbreathing propulsion heiser pdf | 0.65 | 1 | 929 | 68 |
| propulsion systems for hypersonic flight | 0.62 | 0.1 | 1668 | 38 |
| air breathing hypersonic vehicles | 0.08 | 0.8 | 5433 | 43 |
| hypersonic air breathing weapon | 1.55 | 0.1 | 8610 | 41 |
| flexible air-breathing hypersonic vehicle | 0.41 | 0.3 | 5477 | 18 |
| air breathing propulsion system | 0.36 | 0.1 | 252 | 67 |
| high-speed air-breathing propulsion | 0.74 | 0.1 | 2842 | 31 |
| air breathing electric propulsion | 0.22 | 0.3 | 3398 | 90 |
| hypersonic .pdf | 0.79 | 1 | 7429 | 30 |
| hypersonic air-breathing weapon concept | 1.04 | 0.1 | 7772 | 95 |
