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I will try to get all of this info for you in the next day or two. If you want I can also send you a few references so that you can look over the context of the equations. Do you want it in a spreadsheet or just written/ typed out?

You are correct on the first one. I will have to dig back through my references to find the exact equation. It would have to be something to the effect of: F(A)=(n*A)/V n=inflation constant, non dimensional A=area V=velocity I honestly have never worried about the increase in area vs time...

What diameter will the lines fit through?

Are you designing and making your own and need guidance on the design process or are you looking to buy an off the shelf item?

100% know that in his adult life he was not into model rockets and had no interest in them.

There are a few unwanted issues with slipping. The movement is not fast. It forces air out and will cause a major loss in drag. If multiple slips are performed, oscillation occurs which is far worse than anything else. Cutting vents in the rear gores (like the mc1) will allow movement and...

When you say tugging do you mean pulling down a group of lines in order to slip?

You are correct on the para-commander. I may have responded to the wrong post. I was replying to the difficulties of deploying a parafoil. Another (not as efficient as the para-commander) steerable round that is really easy to make is the tojo like the MC1 parachute.

Parafoils like to deploy under specific conditions. If the conditions are not present then there is a large risk for malfunction.

Why would it need to be different at all? Why not just a can system that attaches to shock cords? The electronics, servos, guidance program, chute (why are you using a kite?) And can could all be the same and a single point quick link connector.

Reefing of any kind is used to lower opening forces and ensure an in- sequence deployment. Sizing of sliders is derived from the desired inflation time, max Fx, and the q at deployment.

Sorry if I was a little too finite. Most of the safe recovery topic has already been addressed before I saw the email about this thread. The things that I would weigh in on would be the post about recovery system limitations, which I feel are not true limitations. Some of these limiting factors...

Jim, Safe recovery is the most important thing. That being said, there is a huge difference between solving engineering obstacles that would give an edge to a team and providing a generic system that will safely recover the system. There are 1000's of different parachute designs and one may be a...

I agree that it doesn't exude me from working with other teams. I just feel that I have offered my best recovery plan to another team and not offering a plan equally as great or better would limit the new team. Now if they had an idea that they need references or manufacturing for I would never...

Thank you Eric for the mention. I may be new to the hobby chutes market but I have a long list of accomplishments with parachutes. Just a few quick highlights; FAA certified parachute rigger, constructed chutes as large as 75 ft in diameter, highest successful deployment with a main parachute...

I agree. I feel that the bigger market is balloons and full blown experimental sounding rockets and cube sat boosters. Software that accounts wind and automatically sets up flight paths is expensive. High altitude flyers may be in the market for a system, but cost is probably the biggest hurdle.

Don't worry, multiple companies are working on bringing this technology to the hobby market. ;) The biggest hurdle is education on packing and deployment. Unlike traditional rounds, square gliding chutes deploy better with speed. Price is also another big hurdle. With materials alone being more...

Yes, the parachute cares. Material, hardware and seam selection are based off of max potential forces and then given margins of safety. Most of the time the highest forces are either the opening shock or snatch force. An apogee deployment can place the max forces after inflation and during the...

It's not really a question of what speed but what pressure can a parachute survive. Do you have an idea of what the expected max q (dynamic pressure) is going to be during this flight? Once you figure that out you can easily calculate the max forces. It may not be at opening but during its...

I appreciate it. It can be very confusing so it's not a dumb question at all. I am corrected all the time by a few of my mentors. Last one was that there is no such thing as terminal velocity but only terminal q (q standing for dynamic pressure). An interesting way that some engineers label...