Abstract: An aircraft with an engine support structure, the aircraft including at least an engine wherein the at least engine is top mounted to an aircraft, a main body, and an engine support structure including a plurality of hoop structures, wherein at least one horseshoe structure is located forward of the center of gravity to the at least engine.

Abstract: An aircraft with an engine support structure, the aircraft including at least an engine wherein the at least engine is top mounted to an aircraft, a main body, and an engine support structure including a plurality of hoop structures, wherein at least one horseshoe structure is located forward of the center of gravity to the at least engine.

Abstract: An aircraft with an engine support structure, the aircraft including at least an engine wherein the at least engine is top mounted to an aircraft, a main body, and an engine support structure including a plurality of hoop structures, wherein at least one horseshoe structure is located forward of the center of gravity to the at least engine.

Abstract: A modular blended wing body (BWB) aircraft includes common components containing a nose structure having a left aft edge and a right aft edge intersecting on a centerline of the BWB on one end and intersecting on a leading edge of the BWB on another end, and two wing structures attached to the nose structure, wherein the at least two rear structures includes a left-wing structure arranged on the left side of the centerline, wherein the left-wing structure includes a left forward edge, and a right-wing structure arranged on the right side of the centerline, wherein the right-wing structure includes a right forward edge, and wherein the left-wing structure and the right-wing structure are laterally symmetrical to the centerline, and wherein there is no clear demarcation between the at least two wing structures and the nose structure of the plurality of common components of the BWB aircraft.

Abstract: A modular blended wing body (BWB) aircraft includes common components containing a nose structure having a left aft edge and a right aft edge intersecting on a centerline of the BWB on one end and intersecting on a leading edge of the BWB on another end, and two wing structures attached to the nose structure, wherein the at least two rear structures includes a left-wing structure arranged on the left side of the centerline, wherein the left-wing structure includes a left forward edge, and a right-wing structure arranged on the right side of the centerline, wherein the right-wing structure includes a right forward edge, and wherein the left-wing structure and the right-wing structure are laterally symmetrical to the centerline, and wherein there is no clear demarcation between the at least two wing structures and the nose structure of the plurality of common components of the BWB aircraft.

Abstract: There are disclosed methods of performing an ACL repair. In one embodiment, the method includes providing a patella ligament with two native bone blocks and the patella ligament has a length greater than a native ACL. The length of the patella ligament is shortened to a desired length for an ACL repair while maintaining at least one native interface between the patella ligament and the native bone blocks. There are disclosed adjustable patella ligaments for ACL repair. In one embodiment, the ligament includes native bone blocks with the length between shortened from a length greater than a native ACL. A securing member is attached to one of the blocks and the patella ligament. At least one block is attached to the patella ligament by a native interface. Other embodiments are also disclosed.