scott8888 wrote:
The orbital velocity of earth is about 29800 m/s and to keep things simple that represents a LOT of aero drag in the atmosphere. Totally remove this atmosphere on the small planet and all the drag disappears which drastically change the behavior of the person between the two scenarios. So in situation one velocity can be maintained without acceleration due to there is not drag to counter the original force of the step. On earth maintaining a velocity while running will always require additional acceleration because the atmosphere does exists and force can only be applied at discrete points.Or IOW, wind resistance causes you to slow down more during the flight phase, requiring that you re-accelerate yourself more during the stance phase to maintain a constant velocity. Wind resistance also resists that acceleration during the stance phase. I therefore believe that the Stryd therefore doesn't need a separate wind sensor to account for the (generally rather small) effect of aerodynamic drag while running.
Last edited by:
Andrew Coggan: Jan 4, 16 4:34