1 Subjects: “...controllable pitch propeller...”

2 Subjects: “...solid propellants...”

3 Subjects: “...combined perforator propeller flap...”

4 Subjects: “...turbo-propeller...”

5 Subjects: “...tubular propeller turbine...”

6 Subjects: “...propeller...”

7 Subjects: “...self-propelled particles...”

8 Subjects: “...high-energy HTPB propellant...”

9 Subjects: “...solid propellant blasting...”

10 Subjects: “...self-propelled...”

11 Subjects: “...marine propeller...”

12 Subjects: “...surface-piercing propeller...”

13 Subjects: “...rocket propellant...”

14 Subjects: “...propeller...”

15 Subjects: “...propeller...”