spinglebout

Oh gosh, yes. It does help! I think I have been googling the wrong things all this time. Thanks a bunch for this!

Haha! Yeah.. I'm doing my final semester undergrad. At moments like this, I truly feel like I have dug my own grave by choosing ram-air parachute analysis. But no matter, your thoughts actually make me feel a little less crappy. As of now, I'm going to go with whatever data I can acquire. Also, I'm going to pay a visit to my local DZ here in DUbai. Hopefully I will get more insight into the matter and come back with a better set of questions in the forum

Ah yes.. that makes sense. I live in Dubai... I'll be heading over to SkyDive Dubai and see if I can speak with a few skydivers over there regarding what you mentioned about density altitude. I could take a standard for Dubai. Thanks a bunch!

thanks for the reply RiggerLee! I am doing a research project on canopies and I'm trying to do a comparative analysis between a canopy designed for a student and a canopy designed for an expert... in terms of performance. Low performance for the student and high performance for the expert. (correct me if my statement is wrong) So using several hypothetical and quantitative input variables such as different exit weights(150lb and 200lb(, different inflation times(2 secs and 3 secs), different canopy opening altitudes (2000ft, 3000ft)etc. for both low performance and high performance canopies. Ill also be talking about the effect of varying density altitudes, canopy materials etc. to support the analysis Now my difficulty lies in identifying a fixed set of performance factors that can 'influence' the way the canopy behaves for both low performance and high performance. This way I have a list of factors to work on analyzing in terms of different input variables. (still in the process of figuring everything out.. pardon me if i sound vague in any way)

Thanks so much for the information! It really helped! And yeah I was looking for the airspeed at the moment of canopy extraction. Basically, the pre-inflation fall rate! :)

Well.. I was referring to MSL because the inflation-force calculation diagnostic tool that I am using requires altitude in MSL I am still learning about a lot of new terms and concepts and I hoping once I'm more well versed on this subject (which should be very soon) I would be able to ask more informed questions :)

Not likely

Well, that's what I'm trying to find out. Like, what makes a JVX parachute deserve the title of 'high-performance' for example..

What are the main factors that affect a parachute's performance? Material Number of cells Shape Inflation force Glide ratio ...etc?

Hi everybody! Could someone please help me categorize canopies from Performance Designs as well as Incarus Canopies in terms of skill level? For example, Could I have one example of a Student level canopy each from PD and Icarus. Same for a Tandem, High performance canopy etc? Please feel free to provide your own suggestions for categories. If it's a subjective matter, your personal opinion on the ideal canopy for the particular skill level is fine too I'm doing this for a project as a basic comparative analysis. :) Thanks!

Hi everybody! I'm new to Dropzone.. and I'm loving it so far. I'm a student of Aeronautical Engineering and I'm currently doing my final Project in Sport Parachuting. For kicks, I'll be doing my Tandem jump sometime next month(excited!) I need a some data for an analysis I'm conducting and I'd really appreciate any help from experienced skydivers out here. Here goes: For a Performance Design - Velocity (Expert level) - At what altitude would an average 150lb person deploy his parachute? (Mean sea level) - What would the inflation time be? - At what airspeed would he be travelling (MSL)? If possible could I have the above values for a PD-Navigator (Student level) and a PD-Stiletto as well? Thanks! :)