Abstract: A vehicle includes an information storage, an information notifier, a reply acquirer, a vehicle characteristic specifier, and a vehicle characteristic setter. The information storage is configured to store question information including a plurality of questions. The information notifier is configured to extract a question from the stored question information in accordance with a predetermined rule and notify the question through a notification device. The reply acquirer is configured to acquire a reply to the notified question. The vehicle characteristic specifier is configured to specify a vehicle characteristic based on the reply. The vehicle characteristic setter is configured to set the specified vehicle characteristic is the vehicle.

Abstract: A vehicle system includes a first vehicle and a second vehicle. The first vehicle includes an information storage configured to store vehicle characteristic information representing a vehicle characteristic, and an information output unit configured to output the stored vehicle characteristic information to a predetermined storage medium. The second vehicle includes an information input unit configured to input vehicle characteristic information from the storage medium, and a vehicle characteristic setter configured to set a vehicle characteristic represented by the input vehicle characteristic information in the second vehicle.

Abstract: A vehicle system includes an information storage, an information acquirer, a vehicle characteristics extractor, and a vehicle characteristics transmitter. The information storage stores vehicle information of sample vehicles in association with the sample vehicles. The vehicle information is obtained by combining a traveling location or a traveling environment, or both, with vehicle characteristics. The information acquirer acquires vehicle information of a target vehicle and either of both of a first traveling location and a first traveling environment for which vehicle characteristics for the target vehicle are lacking. The vehicle characteristics extractor determines a sample vehicle of which vehicle information matches the vehicle information of the target vehicle and extracts vehicle characteristics of the sample vehicle corresponding to either or both of the first traveling location and the first traveling environment.

Abstract: A vehicle includes an information storage, an information notifier, a reply acquirer, a vehicle characteristic specifier, and a vehicle characteristic setter. The information storage is configured to store question information including a plurality of questions. The information notifier is configured to extract a question from the stored question information in accordance with a predetermined rule and notify the question through a notification device. The reply acquirer is configured to acquire a reply to the notified question. The vehicle characteristic specifier is configured to specify a vehicle characteristic based on the reply. The vehicle characteristic setter is configured to set the specified vehicle characteristic is the vehicle.

Abstract: A vehicle system includes a first vehicle and a second vehicle. The first vehicle includes an information storage configured to store vehicle characteristic information representing a vehicle characteristic, and an information output unit configured to output the stored vehicle characteristic information to a predetermined storage medium. The second vehicle includes an information input unit configured to input vehicle characteristic information from the storage medium, and a vehicle characteristic setter configured to set a vehicle characteristic represented by the input vehicle characteristic information in the second vehicle.

Abstract: In a space navigation optical instrument comprising a barrel for housing therein an optical part and a contaminant removing door, provided at a part of the outer periphery of the barrel which has the largest radiant heat coupled to the space during a space navigation and has the least external heat input, for opening the inside of the barrel to the space, a thermal gradient is generated in which the inside of the barrel is of a high temperature and the space is of a low temperature, and the inside of the barrel is opened to the space by opening the contaminant removing door to discharge contaminants into the space.

Abstract: In a space navigation optical instrument comprising a barrel for housing therein an optical part and a contaminant removing door, provided at a part of the outer periphery of the barrel which has the largest radiant heat coupled to the space during a space navigation and has the least external heat input, for opening the inside of the barrel to the space, a thermal gradient is generated in which the inside of the barrel is of a high temperature and the space is of a low temperature, and the inside of the barrel is opened to the space by opening the contaminant removing door to discharge contaminants into the space.