| 摘要 |
<p>The surface angle measuring device 19 comprises a chassis that defines a first and a second rangefinder measuring position, the first and second rangefinder measuring positions being rotationally separated by an angle, φ. The surface angle measuring device further comprises a first rangefinder 20 that preferably comprises a laser rangefinder and a first inclinometer 22. The incorporation of the first inclinometer allows the surface angle measuring device to function irrespective of the angle of deployment between the chassis and true horizontal. This significantly simplifies the measurement process since there is no tolerance restriction relating to angle at which the chassis may be deployed, The surface angle measuring finds particular application within described methods for determining the mass of a body and in particular an aircraft.</p> |
