Abstract: A safety arrangement for an aircraft, especially for amphibious aircraft, being configured for determining a type of landing surface (such as water/solid ground) and including: two transceivers (301, 302); the first transceiver (301) configured to operate on first electromagnetic wavelength and the second transceiver (302) configured to operate on second electromagnetic wavelength differing from the first wavelength, and at least one of transceivers is configured to receive the reflections electromagnetic wavelengths, and determining element for determining the type of the landing surface based on the properties of two electromagnetic wavelengths reflected from the landing surface and for outputting a signal indicating the type of the determined landing surface.

Abstract: A safety arrangement for an aircraft, especially for amphibious aircraft, being configured for determining a type of landing surface (such as water/solid ground) and including: two transceivers (301, 302); the first transceiver (301) configured to operate on first electromagnetic wavelength and the second transceiver (302) configured to operate on second electromagnetic wavelength differing from the first wavelength, and at least one of transceivers is configured to receive the reflections electromagnetic wavelengths, and determining element for determining the type of the landing surface based on the properties of two electromagnetic wavelengths reflected from the landing surface and for outputting a signal indicating the type of the determined landing surface.

Abstract: Flying device, in which there is a fuselage (2, 2?), wings (8, 9), which are connected to each other to form an essentially looped structure, elements (4, 5) for creating a flying force, and the desired elements (e.g., 7, 7?) for controlling the flying device (1). The wings (8, 9) of the flying device (1) form a unified totality detachable from the fuselage (2, 2?). A wing construction is also included.

Abstract: A safety arrangement (300, 310, 320, 330, 340) for an aircraft, especially for amphibious aircraft, being configured for determining a type of landing surface (such as water/solid ground) and including: a first transceiver (301) configured to operate on electromagnetic wavelength, a second transceiver (302) configured to operate on ultrasound wavelengths, and determining elements for determining the type of the landing surface based on the properties of reflections of the electromagnetic and ultrasound wavelengths, and for outputting a signal indicating the type of the determined landing surface.

Abstract: Flying device, in which there is a fuselage (2, 2?), wings (8, 9), which are connected to each other to form an essentially looped structure, elements (4, 5) for creating a flying force, and the desired elements (e.g., 7, 7?) for controlling the flying device (1). The wings (8, 9) of the flying device (1) form a unified totality detachable from the fuselage (2, 2?). A wing construction is also included.