Diablo non-Yo-Yo Vertical Paths with Static-Length Tethers

Engineering Flight Control
4

Thanks, Doug.

  1. The two-anchor variant is available, one for each main tether. Such would give some “breathing room” for the two main branches of the system.

  2. Two far-field at-ground roundings are available; one still for PTO.

  3. Of course you are correct in fine-saying that the non-vertical in the zenithal sense for the wing pathing; the wing following the fixed path on the sphere of flight sometimes is taken as “vertical” in context of field viewing as an approximation; fine tuning analysis would, of course, respect what you pointed out. Greater crosswinding occurs on the up-going path along the path on the invisible sphere than if true vertical resulted from control of main-tether length, but static length was called out. On the down-going pathing crosswinding would still be anticipated, but less than in the upgoing section of flight.

Edit#01: Thus, I am favoring that the main tethers remain static length; the up-going pathing along the spherical surface provides a more severe crosswinding than if the main tether was being adjusted just to get true vertical path; the true vertical path would have less crosswinding. Keeping the simplicity of not having to change the length of the main tethers for most of the production running may be a significant benefit for some installations. This system is not a yo-yo matter; see Pierre’s topic for yo yo; the system he is unfolding has fewer lines than the present-topic. The present topic herein has two main tethers and then also the production line that connects both involved wings through one or two rounds at the ground.

In some installations one might dispense with main-tether reels or drums or winches altogether; just anchor to Earth very directly or immediately. Using huge wings (or wing sets) might ordinarily invite expense line-handling winches; but some installations might want to save all the costs and todos of winches and reels for the mains.

Edit#02 To help discern matters and distinguish the topic, I provide a sample tow two-wing reciprocating AWES that contrasts with the present topic. The following example does not have static mains and does not have a far-field line for PTO, but a close-field PTO line.
WO2012146158 - RECIPROCATING UNLOADING AND LOADING KITE AND KITE-DRIVING WORKING MECHANISM THEREOF, POWER GENERATION METHOD, AND VEHICLE OR BOAT TRAVELING METHOD
Note: LUO, Conggui seems to be the same inventor that is involved in another topic on our forum, which one may visit: HERE.