The influence of terrain and the atmosphere on seismic measurements to be made by the Dragonfly rotorcraft lander on Saturn's moon Titan are examined. The need to relocate the vehicle leads to rather different deployment considerations from a fixed lander. Surface texture affects the tilt that the seismometer instrument (vertical-only) must tolerate on deployment: consideration of terrestrial analog terrain suggests a tolerance of 5° and legs of 1–3 ​cm should eliminate the need for a leveling mechanism at most sites. 3-axis geophones fixed to the landing gear provide omnidirectional measurements (albeit with lower sensitivity) at all sites without requiring deployment operations. Empirical and first-principles models suggest that a characteristic velocity noise of ~0.5 μm/s may be expected on the lander skids on loose ground, with values an order of magnitude smaller or larger for calm and strong wind conditions, respectively. Wind loads directly on a streamlined seismometer housing, on the tether, and on the lander via the ground all give comparable vertical noise (~10 ​nm/s) at the instrument, and thus the mechanical complexity of a separate windshield, which would need to be massive to not itself blow away, is not justified.

考察了地形和大气对蜻蜓旋翼飞机着陆器在土星的卫星泰坦上进行的地震测量的影响。重新安置飞行器的需要导致了与固定着陆器截然不同的部署考虑。表面纹理会影响地震仪仪器（仅限垂直）在部署时必须容忍的倾斜度：考虑到陆地模拟地形建议 5° 的容差和 1-3 厘米的腿应该消除在大多数站点对调平机制的需要。固定在起落架上的 3 轴检波器可在所有站点提供全向测量（尽管灵敏度较低），而无需部署操作。经验和第一性原理模型表明，在松软地面上的着陆器滑橇上可能会出现 ~0.5 μm/s 的特征速度噪声，对于平静和强风条件，值分别小或大一个数量级。风荷载直接作用在流线型地震仪外壳上、系绳上以及通过地面作用在着陆器上，都会在仪器上产生可比的垂直噪声（~10 nm/s），因此单独挡风玻璃的机械复杂性需要大到自己不吹走，是没有道理的。