Abstract: A first hand control controls an altitude of a vertical takeoff and landing (VTOL) aircraft; the movement of the VTOL aircraft within a plane defined by a roll axis and a pitch axis is independent of the first hand control. The first hand control is provided on a first hand side of a pilot's seat included in the VTOL aircraft. A second hand control controls the movement of the VTOL aircraft within the plane defined by the roll axis and the pitch axis; the altitude of the VTOL aircraft is independent of the second hand control. The second hand control is provided on a second hand side of the pilot's seat that is opposite from the first hand side.

Abstract: An inner middle rotor is rotated while an inner front rotor, an inner back rotor, and an outer rotor are not rotated. The inner middle rotor is surrounded by the inner front rotor, the inner back rotor, the outer rotor, and a fuselage. After rotating the inner middle rotor while not rotating the inner front rotor, the inner back rotor, and the outer rotor, the inner middle rotor, the inner front rotor, the inner back rotor, and the outer rotor are simultaneously rotated.

Abstract: A document that has been created with a document authoring software is published for viewing using a document viewing software. The document viewing software provides tools for viewing and annotating the published document and saving the published document with the annotations. When the published document with the annotations is opened using the document authoring software, the original document created with the document authoring software is also opened so that modifications can be made to the original document based on the annotations.

Abstract: In a method and a CAD system for converting a dimensional representation of a technical drawing from a first dimensional representation standard with first dimensional representation attributes into a second dimensional representation standard with second dimensional representation attributes the dimensional representations of a technical drawing which are to be converted are selected and read into a list, and starting with the first dimensional representation element in the list, a dimensional representation element is read from the list, and it is determined whether the dimensional representation element is provided with dimensional representation element legends which are independent of dimensional representation standards, and, if this is the case, all dimensional representation element legends are stored, the first dimensional representation attributes of the dimensional representation element are converted into the second dimensional representation attributes, and it is determined whether the dimensiona