II.A7.001

Inertial navigation systems and specially designed components thereof, as follows: I. Inertial navigation systems which are certified for use on “civil aircraft” by civil authorities of a State participating in the Wassenaar Arrangement, and specially designed components thereof, as follows: a. Inertial navigation systems (INS) (gimballed or strapdown) and inertial equipment designed for “aircraft”, land vehicle, vessels (surface or underwater) or “spacecraft” for attitude, guidance or control, having any of the following characteristics, and specially designed components thereof: 1. Navigation error (free inertial) subsequent to normal alignment of 0,8 nautical mile per hour (nm/hr) “Circular Error Probable” (CEP) or less (better); or 2. Specified to function at linear acceleration levels exceeding 10 g; b. Hybrid Inertial Navigation Systems embedded with Global Navigation Satellite Systems(s) (GNSS) or with “Data-Based Referenced Navigation” (“DBRN”) System(s) for attitude, guidance or control, subsequent to normal alignment, having an INS navigation position accuracy, after loss of GNSS or “DBRN” for a period of up to four minutes, of less (better) than 10 metres “Circular Error Probable” (CEP); c. Inertial Equipment for Azimuth, Heading, or North Pointing having any of the following characteristics, and specially designed components thereof: 1. Designed to have an Azimuth, Heading, or North Pointing accuracy equal to, or less (better) than 6 arc/ minutes RMS at 45 degrees latitude; or 2. Designed to have a non-operating shock level of at least 900 g at a duration of at least 1 msec. Note: The parameters of I.a. and I.b. are applicable with any of the following environmental conditions: 1. Input random vibration with an overall magnitude of 7,7 g rms in the first half hour and a total test duration of one and a half hours per axis in each of the three perpendicular axes, when the random vibration meets the following: a. A constant power spectral density (PSD) value of 0,04 g2/Hz over a frequency interval of 15 to 1 000 Hz; and b. The PSD attenuates with a frequency from 0,04 g2/Hz to 0,01 g2/Hz over a frequency interval from 1 000 to 2 000 Hz; 2. A roll and yaw rate equal to or greater than +2,62 radian/s (150 deg/s); or 3. According to national standards equivalent to 1. or 2. above. 1. I.b. refers to systems in which an INS and other independent navigation aids are built into a single unit (embedded) in order to achieve improved performance. 2. “Circular Error Probable” (CEP) – In a circular normal distribution, the radius of the circle containing 50 percent of the individual measurements being made, or the radius of the circle within which there is a 50 percent probability of being located. II. Theodolite systems incorporating inertial equipment specially designed for civil surveying purposes and designed to have an Azimuth, Heading, or North Pointing accuracy equal to, or less (better) than 6 arc minutes RMS at 45 degrees latitude, and specially designed components thereof. III. Inertial or other equipment using accelerometers specified in 7A001 or 7A101, where such accelerometers are specially designed and developed as MWD (Measurement While Drilling) sensors for use in downhole well services operations.