Abstract: A multi-purpose golf tool includes a golf tee platform arranged on a golf tool body, the golf tee platform configured to receive a golf ball balanced thereon, a first prong extending from the golf tool body opposite the golf tee platform, a second prong extending from the golf tool body opposite the golf tee platform, a curved depression extending perpendicular to the length and formed by the golf tool body and a portion of the first prong and second prong, and a first rounded gap between the first prong and the second prong. The first prong has a first ridge extending perpendicular to the length and abutting the curved depression. The second prong has a second ridge extending perpendicular to the length and abutting the curved depression.

Abstract: A supersonic aircraft fuselage includes a fuselage body having a first end, a second end, a length extending between the first end and second end, a surface, a first flat plane extending from the first end to a center of the fuselage body along the length on the surface, and a second flat plane extending from the second end to the center of the fuselage body along the length on the surface. The surface includes a curved portion conforming to a Sears-Haack body shape and abutting the first flat plane and second flat plane and extending between the first end and second end. A supersonic aircraft includes a first fuselage, a second fuselage, and a space between the first fuselage and second fuselage. The first fuselage and second fuselage form a Busemann biplane geometry within the space.

Abstract: A supersonic aircraft fuselage includes a fuselage body having a first end, a second end, a length extending between the first end and second end, a surface, a first flat plane extending from the first end to a center of the fuselage body along the length on the surface, and a second flat plane extending from the second end to the center of the fuselage body along the length on the surface. The surface includes a curved portion conforming to a Sears-Haack body shape and abutting the first flat plane and second flat plane and extending between the first end and second end. A supersonic aircraft includes a first fuselage, a second fuselage, and a space between the first fuselage and second fuselage. The first fuselage and second fuselage form a Busemann biplane geometry within the space.