shah269 0 #1 August 16, 2012 http://www.wired.com/wiredscience/2012/08/diy-capsule-launch-escape-system-post-flight-evaluation/ QuoteRight after the drogue was released, the capsule top-part descended slowly toward the ocean using a tiny parachute. Since there was no time to get Betty stabilized using the drogue, I had to release the main parachutes, which worked fine as well. The bags were simultaneously pulled by the drogue but the tumbling of Betty seemed to have some kind of effect on the synchronous deployment of the parachutes. One parachute was almost deployed completely. The rest barely made it outside the bags. Two of the parachutes are still intact but one is slightly torn and melted in some areas. Why? I do not know yet I'm sure you guys may have a solution. What do you think?Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay. The only thing that falls from the sky is birdshit and fools! Quote Share this post Link to post Share on other sites
-ftp- 0 #2 August 16, 2012 And this has to do with skydiving how? Oh god why do I even bother, lets hear it shah, break it down for us. I can't wait.... Quote Share this post Link to post Share on other sites
shah269 0 #3 August 16, 2012 They seem to have had a parachute deployment problem. Seems like something many people here could have valuable insight with?Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay. The only thing that falls from the sky is birdshit and fools! Quote Share this post Link to post Share on other sites
davelepka 4 #4 August 16, 2012 QuoteThey seem to have had a parachute deployment problem. Seems like something many people here could have valuable insight with? Did you read the article? They clearly state the problem, which is clear to see in the video, they lacked the altitude to allow for the drouge to stabilize the capsule and then for the mains to deploy. Maybe of the rocket didn't nose-over after two seconds of flight, or if the skipped the drouge-stabilization and just got the mains out, they would have had more canopy at impact. If you pull low, you're going to bounce, you can't fix that. Quote Share this post Link to post Share on other sites
jinlee 0 #5 August 16, 2012 Quote They seem to have had a parachute deployment problem. Seems like something many people here could have valuable insight with? The flames and intense heat of the rocket motors roasted the parachute assembly.... back to the drawing board... I've settled the matter to everyones satisfaction. Please lock the thread now. Thanks Quote Share this post Link to post Share on other sites
excaza 1 #6 August 16, 2012 QuoteI'm sure you guys may have a solution. What do you think? I think I'd go with stopping the tumbling and getting to the right altitude by fixing the uneven burn rate. You know, the problem they point out in the article. Quote Share this post Link to post Share on other sites
shah269 0 #7 August 16, 2012 Quote The flames and intense heat of the rocket motors roasted the parachute assembly.... back to the drawing board... I've settled the matter to everyones satisfaction. Please lock the thread now. Thanks You know I was thinking about that! All that rocket blast inches away from all that nylon? Can't be good! I'm amazed they didn't utilize the rocket to pull the Dbag out instead of having the rocket kick off first and then having the Dbag deploy second. You know kind of like a skyhook? ! And dumb question. would a solid ring slider have helped open things up faster?Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay. The only thing that falls from the sky is birdshit and fools! Quote Share this post Link to post Share on other sites
excaza 1 #8 August 16, 2012 If you're worried about the rocket burning up the parachutes, you don't really want to have the rocket pull the chutes out of the container shielding them from the exhaust. And no, a slider won't help anything open faster. Quote Share this post Link to post Share on other sites
shah269 0 #9 August 16, 2012 I wonder why they have the rocket blast right on the nose of the cone? makes you wonder what they were thinking! Can we have maybe 10ft of stand off distance? Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay. The only thing that falls from the sky is birdshit and fools! Quote Share this post Link to post Share on other sites
excaza 1 #10 August 16, 2012 Quote I wonder why they have the rocket blast right on the nose of the cone? They didn't, it's very clearly at an angle. Quote Can we have maybe 10ft of stand off distance? If you add more distance then you change the moments of inertia of the system and make it more unstable. The added structure also makes the system heavier, which is bad for space. Quote Share this post Link to post Share on other sites
shah269 0 #11 August 16, 2012 Check this out. http://en.wikipedia.org/wiki/File:Apollo-linedrawing.png Maybe those NASA guys knew a thing or two! Oh those smarty pants guys of NASA!Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay. The only thing that falls from the sky is birdshit and fools! Quote Share this post Link to post Share on other sites
excaza 1 #12 August 16, 2012 If you're not going to take this seriously, I'm not going to either. Quote Share this post Link to post Share on other sites
-ftp- 0 #13 August 16, 2012 QuoteIf you're not going to take this seriously, I'm not going to either. welcome to #2's world, were you actually expecting to get something out of a thread by him? Quote Share this post Link to post Share on other sites
excaza 1 #14 August 16, 2012 No, but they're good questions when there's actually an interest in discussion. Quote Share this post Link to post Share on other sites
shah269 0 #15 August 16, 2012 QuoteIf you're not going to take this seriously, I'm not going to either. No check it out the NASA guys had a bit of distance between the rocket motors and the capsule and they used a second motor pull off the tower off! So i guess they would shut down the primary motors and fire the top motor to "pull" the parachute out if things went south very close to the ground kind of like a rocket assisted skyhook! Ring sliders were developed long after the Apollo program right? Well wouldn't a ring slider maybe have helped with that snivel they had? But only if it were a solid ring not a mesh ring?Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay. The only thing that falls from the sky is birdshit and fools! Quote Share this post Link to post Share on other sites
mjosparky 4 #16 August 16, 2012 If you stage the canopies right it works like a charm. This rocket is 16 ft. and 450 pounds. http://s397.photobucket.com/albums/pp55/mjosparky/?action=view¤t=Jayhawk_2nd_Flight_Ground_Video.mp4 SparkyMy idea of a fair fight is clubbing baby seals Quote Share this post Link to post Share on other sites
shah269 0 #17 August 16, 2012 I'm sorry I can't see it. Will check when I go home. This past summer I was working with a number of kids at a summer enrichment program. One of their project was to build one of those silly little A motor rockets. I was amazed at how much of a kick that rocket had when it came to deploying the parachute and if folded correctly how quickly it all worked!Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay. The only thing that falls from the sky is birdshit and fools! Quote Share this post Link to post Share on other sites
mjosparky 4 #18 August 16, 2012 QuoteI'm sorry I can't see it. Will check when I go home. This past summer I was working with a number of kids at a summer enrichment program. One of their project was to build one of those silly little A motor rockets. I was amazed at how much of a kick that rocket had when it came to deploying the parachute and if folded correctly how quickly it all worked! Try this. Jayhawk 2nd flight...ground video. http://www.rocketryonline.com/rolpresents/index.php?site=gbr&page=movie_theater#Jayhawk 2nd Flight SparkyMy idea of a fair fight is clubbing baby seals Quote Share this post Link to post Share on other sites
shah269 0 #19 August 16, 2012 I can't view this from work will view when i get home later tonight. I really hope they figure it out! I think it would be very cool!Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay. The only thing that falls from the sky is birdshit and fools! Quote Share this post Link to post Share on other sites
excaza 1 #20 August 16, 2012 At the risk of continuing the whack-a-mole questioning... QuoteNo check it out the NASA guys had a bit of distance between the rocket motors and the capsule and they used a second motor pull off the tower off! They also had a secondary control surface to keep it stable. The secondary booster adds complexity and weight (and therefore cost). These are considerations that the Apollo program obviously didn't mind, but CS feels that they didn't want to add. QuoteSo i guess they would shut down the primary motors and fire the top motor to "pull" the parachute out if things went south very close to the ground kind of like a rocket assisted skyhook! The whole thing is already a rocket assisted skyhook. The whole purpose of it is to clear the crew capsule from the booster in the event of an emergency. It's designed to take the capsule from 0/0 (zero airspeed, zero altitude) to an altitude and speed high enough for the parachutes to deploy and safely recover the capsule. It's the same basic concept behind jet ejector seats. In this situation, the parachutes weren't the problem. Quote Share this post Link to post Share on other sites
airtwardo 7 #21 August 16, 2012 Quote Quote I'm sorry I can't see it. Will check when I go home. This past summer I was working with a number of kids at a summer enrichment program. One of their project was to build one of those silly little A motor rockets. I was amazed at how much of a kick that rocket had when it came to deploying the parachute and if folded correctly how quickly it all worked! Try this. Jayhawk 2nd flight...ground video. http://www.rocketryonline.com/rolpresents/index.php?site=gbr&page=movie_theater#Jayhawk 2nd Flight Sparky 3 pointer...NUTHIN' But NET! ~ If you choke a Smurf, what color does it turn? ~ Quote Share this post Link to post Share on other sites
CSpenceFLY 1 #22 August 17, 2012 QuoteAnd this has to do with skydiving how? Oh god why do I even bother, lets hear it shah, break it down for us. I can't wait.... Don't give him a hard time. He actually made a post without mentioning someones size or being generally self centered and insulting. Quote Share this post Link to post Share on other sites
mjosparky 4 #23 August 17, 2012 Quote Quote Quote I'm sorry I can't see it. Will check when I go home. This past summer I was working with a number of kids at a summer enrichment program. One of their project was to build one of those silly little A motor rockets. I was amazed at how much of a kick that rocket had when it came to deploying the parachute and if folded correctly how quickly it all worked! Try this. Jayhawk 2nd flight...ground video. http://www.rocketryonline.com/rolpresents/index.php?site=gbr&page=movie_theater#Jayhawk 2nd Flight Sparky 3 pointer...NUTHIN' But NET! I do good work........ The 2 green canopies are R-4 Piglet reserves I made for the set up. SparkyMy idea of a fair fight is clubbing baby seals Quote Share this post Link to post Share on other sites
theonlyski 8 #24 August 17, 2012 My first thought was that the canopies are on different deployment systems? Your system looks much better and hell, ya stood up the landing!"I may be a dirty pirate hooker...but I'm not about to go stand on the corner." iluvtofly DPH -7, TDS 578, Muff 5153, SCR 14890 I'm an asshole, and I approve this message Quote Share this post Link to post Share on other sites
mjosparky 4 #25 August 17, 2012 In a way they were. The 12’ cross form deployed at apogee…..and the whole rocket rode it down to around 2,000 feet and the 2 R-4’s deployed. I used the cross form just to get it to a lower altitude so the uppers would not blow it out of sight. It topped out at over 30,000 feet. SparkyMy idea of a fair fight is clubbing baby seals Quote Share this post Link to post Share on other sites
