Elastic Launched Gliders B

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builderguy135
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Re: Elastic Launched Gliders B

Postby builderguy135 » June 14th, 2019, 2:01 pm

Maxout wrote:
Pastaman202 wrote:
builderguy135 wrote:
Agreed. The ES was definitely touching the glider a way you're not supposed to.

I don't think this would change much though, ngl it was probably just the way you flew the glider that affected the timing. What specifically happened? If the glide changed, couldn't you have done something about it?


I am pretty sure if we have time we can adjust the gliders back to the original state. However this happened right before our competition and there was no time to do it. According to the ELG rule, "Only participants may handle aircraft components until the event ends." So doesn't matter if the ES mess up the gliders or not, he was not supposed to touch it as all!

Who is the ES for ELG at National? I am thinking about filing a complaint to NSO.


Matt Chalker. Someone who should know better.

My team got screwed by the timers being lazy and sitting down so that scores took easily 1/3 of their time allotment to record. Completely unacceptable.


Completely agree on the second part!

I had times that varied between 2 seconds on the same exact flight. I don't think chalker was there but the volunteers clearly did not know what they were doing.
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Re: Elastic Launched Gliders B

Postby Mwang12324161 » July 21st, 2019, 10:05 am

prd06 wrote:Hi I'm having an issue with my glider transitioning from the launch to the glide.
The glider does not have flaps and is made entirely of balsa. It has dihedral in the wing and stabilizer (no rudder/fin) When I just threw it, it glided pretty smoothly and was turning, but in the launch, it went straight up, then the glider suddenly pitched down and nose-dived into the floor. Does anyone know what is causing this? Do I need to launch it a certain way, or change the wing incidence, or change the surface area of the wing?

Thanks.


A quick and simple solution is just to launch the glider with more roll to the left if you are turning left and vice versa. No need to change the glider, just the launch position.

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Re: Elastic Launched Gliders B

Postby Mwang12324161 » July 21st, 2019, 10:11 am

prd06 wrote:Has anyone built and tested the Freedom Flight or J&H Aerospace kits?
How heavy is your glider? What kinds of times are you getting?

Every glider is different and no two are alike (i know this is a cliche)
It all depends on the build and your skill level. My team has some experience... Our FF weighed in at 3.5 grams and max time was around 25. Placed 13th at '19 nationals with a consistent 24, 25, 24, 23, 24 second score.

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Re: Elastic Launched Gliders B

Postby builderguy135 » July 21st, 2019, 8:51 pm

Mwang12324161 wrote:
prd06 wrote:Hi I'm having an issue with my glider transitioning from the launch to the glide.
The glider does not have flaps and is made entirely of balsa. It has dihedral in the wing and stabilizer (no rudder/fin) When I just threw it, it glided pretty smoothly and was turning, but in the launch, it went straight up, then the glider suddenly pitched down and nose-dived into the floor. Does anyone know what is causing this? Do I need to launch it a certain way, or change the wing incidence, or change the surface area of the wing?

Thanks.


A quick and simple solution is just to launch the glider with more roll to the left if you are turning left and vice versa. No need to change the glider, just the launch position.


You might be right but a rudder/fin might help... ;)
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Re: Elastic Launched Gliders B

Postby Mwang12324161 » July 22nd, 2019, 7:09 am

prd06 wrote:Has anyone built and tested the Freedom Flight or J&H Aerospace kits?
How heavy is your glider? What kinds of times are you getting?

My freedom flight got 13th at nationals with a consistent 25 seconds each flight. If you are skeptical I am from Wilmington Academy of Arts and Sciences. The FF is a solid competitor but it all hinges on your luck, experience level, and building skill.
My experience is that the JHs are not quite as good as the FFs. I think they are a bit harder to trim and are flimsy. Good for practicing building/trimming though.
Good luck.

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Re: Elastic Launched Gliders B

Postby coachchuckaahs » July 22nd, 2019, 9:03 am

Mwang12324161 wrote:
prd06 wrote:Has anyone built and tested the Freedom Flight or J&H Aerospace kits?
How heavy is your glider? What kinds of times are you getting?

My freedom flight got 13th at nationals with a consistent 25 seconds each flight. If you are skeptical I am from Wilmington Academy of Arts and Sciences. The FF is a solid competitor but it all hinges on your luck, experience level, and building skill.
My experience is that the JHs are not quite as good as the FFs. I think they are a bit harder to trim and are flimsy. Good for practicing building/trimming though.
Good luck.


I strongly disagree with the notion that doing well takes luck in this event. I fought this impression on my team several years ago. They did not like pre builds because of bad luck, something always goes wrong. We focused on engineering robust solutions and putting in many many flights. To the point that you KNOW how the plane will perform, and how to adjust. We built 15 gliders this year, and performed well over 500 logged flights. The kids learned to observe every aspect of flight, and make appropriate adjustments. They also leaked when repairs were possible, and when to go to a backup.

Build events should be a given, not guesswork. But it takes tremendous effort to get to the top.

In gliders, my kids actually deviated from testing for the last two flights, because they saw an opportunity on the first three. This paid off with 2-3 seconds improvement over any prior flight. They felt comfortable making the change because they had the experience.

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Re: Elastic Launched Gliders B

Postby Umaroth » July 22nd, 2019, 11:17 am

coachchuckaahs wrote:
Mwang12324161 wrote:
prd06 wrote:Has anyone built and tested the Freedom Flight or J&H Aerospace kits?
How heavy is your glider? What kinds of times are you getting?

My freedom flight got 13th at nationals with a consistent 25 seconds each flight. If you are skeptical I am from Wilmington Academy of Arts and Sciences. The FF is a solid competitor but it all hinges on your luck, experience level, and building skill.
My experience is that the JHs are not quite as good as the FFs. I think they are a bit harder to trim and are flimsy. Good for practicing building/trimming though.
Good luck.


I strongly disagree with the notion that doing well takes luck in this event. I fought this impression on my team several years ago. They did not like pre builds because of bad luck, something always goes wrong. We focused on engineering robust solutions and putting in many many flights. To the point that you KNOW how the plane will perform, and how to adjust. We built 15 gliders this year, and performed well over 500 logged flights. The kids learned to observe every aspect of flight, and make appropriate adjustments. They also leaked when repairs were possible, and when to go to a backup.

Build events should be a given, not guesswork. But it takes tremendous effort to get to the top.

In gliders, my kids actually deviated from testing for the last two flights, because they saw an opportunity on the first three. This paid off with 2-3 seconds improvement over any prior flight. They felt comfortable making the change because they had the experience.

Coach Chuck

I absolutely agree with this for all build events. Luck can be a factor, but build events are all about collecting data to know where to tweak your device and how you can circumvent disaster situations in competition using your data, sort of like an applied EXPD. My coach always says that without the rigorous scientific testing, build events go from science to arts & crafts. In Battery Buggy, we sure didn't have the best car design, but we spent hours upon hours on the weekends testing, logging, calibrating, and finding patterns in our runs that we could use to improve our system, and in the end we knew our buggy well enough to make very accurate runs with a margin of error of about 3 cm and get 3rd at nats. The science is really the important part of build events, otherwise you may not be utilizing your device to its fullest potential.
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Re: Elastic Launched Gliders B

Postby sciolyperson1 » July 22nd, 2019, 2:22 pm

Umaroth wrote:
coachchuckaahs wrote:
Mwang12324161 wrote:My freedom flight got 13th at nationals with a consistent 25 seconds each flight. If you are skeptical I am from Wilmington Academy of Arts and Sciences. The FF is a solid competitor but it all hinges on your luck, experience level, and building skill.
My experience is that the JHs are not quite as good as the FFs. I think they are a bit harder to trim and are flimsy. Good for practicing building/trimming though.
Good luck.


I strongly disagree with the notion that doing well takes luck in this event. I fought this impression on my team several years ago. They did not like pre builds because of bad luck, something always goes wrong. We focused on engineering robust solutions and putting in many many flights. To the point that you KNOW how the plane will perform, and how to adjust. We built 15 gliders this year, and performed well over 500 logged flights. The kids learned to observe every aspect of flight, and make appropriate adjustments. They also leaked when repairs were possible, and when to go to a backup.

Build events should be a given, not guesswork. But it takes tremendous effort to get to the top.

In gliders, my kids actually deviated from testing for the last two flights, because they saw an opportunity on the first three. This paid off with 2-3 seconds improvement over any prior flight. They felt comfortable making the change because they had the experience.

Coach Chuck

I absolutely agree with this for all build events. Luck can be a factor, but build events are all about collecting data to know where to tweak your device and how you can circumvent disaster situations in competition using your data, sort of like an applied EXPD. My coach always says that without the rigorous scientific testing, build events go from science to arts & crafts. In Battery Buggy, we sure didn't have the best car design, but we spent hours upon hours on the weekends testing, logging, calibrating, and finding patterns in our runs that we could use to improve our system, and in the end we knew our buggy well enough to make very accurate runs with a margin of error of about 3 cm and get 3rd at nats. The science is really the important part of build events, otherwise you may not be utilizing your device to its fullest potential.


Just wanted to add on - although in some events, you may get lucky/unlucky, for example in Roller Coaster, you must adjust your device so that it succeeds, for instance, 90% of the time on each run. Same for ELG; if 50% of your flights get at least 30 seconds in a x foot gym, and 50% don't, then adjust it, to make sure that it works 95% of the time, rather than just 50%

I also have to agree with Umaroth: finding patterns in anything is a great way to improve how your builds function. Although yes, vehicle events rely on a tiny, tiny bit of luck, (3rd lost to 2nd by a fraction of a point, I lost to 3rd by less than 1 point), learn how your plane, car, or device functions. By doing so, at competition, you can use your 2nd, 3rd, 4th, etc flights to make quick, small adjustments in order to have your device performing optimally.
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Re: Elastic Launched Gliders B

Postby builderguy135 » July 22nd, 2019, 6:08 pm

Honestly, I think ELG is probably the least luck dependent build out of any I've seen for the past few years. The other two flight events could arguably have luck involved because of ceiling collisions, and every other build (boomi, vehicles, devices) are even more luck based.

I have personally never really had many problems with launching consistently, don't know why :\. For those who have problems launching consistently, I suggest those protractor launchers. My rubber band taped on a stick is easier to use but it's harder to control if you don't think you can launch consistently.

With FF (and J&H) kits, they're honestly not the best design out there. However, these kits are a GREAT way to get beginners started out on a plane that functions well and teaches you the basics of gliders, but the point of these kits (and every other kit) is to improve, experiment, and change the design to make it better. You might be able to get away with using a FF kit at invitationals and states, but it would be very hard to medal with an unmodified kit at nationals.
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Re: Elastic Launched Gliders B

Postby Maxout » August 3rd, 2019, 9:15 am

Mwang12324161 wrote:
prd06 wrote:Has anyone built and tested the Freedom Flight or J&H Aerospace kits?
How heavy is your glider? What kinds of times are you getting?

My freedom flight got 13th at nationals with a consistent 25 seconds each flight. If you are skeptical I am from Wilmington Academy of Arts and Sciences. The FF is a solid competitor but it all hinges on your luck, experience level, and building skill.
My experience is that the JHs are not quite as good as the FFs. I think they are a bit harder to trim and are flimsy. Good for practicing building/trimming though.
Good luck.


LOL that's cute. Normally I wouldn't comment on this, but somebody didn't do their research. The winning team from Tower Heights was coached by Bucky Servaites who has more free flight glider experience than this entire forum combined. He bought the materials for their winning gliders from us. That he used his own design is barely relevant at that level of flying skill.

The teams that bought J&H kits consistently told us they were the most durable ELGs they'd ever tried. That was one of the design goals and it panned out beautifully.

Properly trimmed for the site, the FF and J&H kits were capable of roughly equal times at the Nats. I timed several FF gliders around 30 seconds, best I saw from a Super Protege was 33 seconds but there could have been more from both designs.

Luck and building skill didn't contribute much this year. Trimming did. Flapped gliders are pure voodoo for those who haven't dealt with them. In the case of those using Vector Board, I saw several teams who thought CA accelerator is better when applied in floods, which melted the foam.
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Re: Elastic Launched Gliders B

Postby builderguy135 » August 3rd, 2019, 2:35 pm

Maxout wrote:The winning team from Tower Heights was coached by Bucky Servaites


Where can I get a coach? There aren't many people in the NJ area who do indoor competitively :\ Online forums are good but honestly they only get me so far.
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Re: Elastic Launched Gliders B

Postby Anomaly » August 3rd, 2019, 7:40 pm

builderguy135 wrote:
Maxout wrote:The winning team from Tower Heights was coached by Bucky Servaites


Where can I get a coach? There aren't many people in the NJ area who do indoor competitively :\ Online forums are good but honestly they only get me so far.

>only get me so far
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Re: Elastic Launched Gliders B

Postby coachchuckaahs » August 3rd, 2019, 8:53 pm

I believe there is a VERY active indoor community in NJ. Check out Hanger 1 at Lakehurst! They are hosting the US Junior Team Selection competition. Club is East Coast Indoor Modelers.

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Re: Elastic Launched Gliders B

Postby builderguy135 » August 4th, 2019, 7:46 am

coachchuckaahs wrote:I believe there is a VERY active indoor community in NJ. Check out Hanger 1 at Lakehurst! They are hosting the US Junior Team Selection competition. Club is East Coast Indoor Modelers.

Coach Chuck


Dang, it's only an hour away. I'll see if I can get in contact with anyone near there.
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Re: Elastic Launched Gliders B

Postby Maxout » August 12th, 2019, 2:42 pm

builderguy135 wrote:
coachchuckaahs wrote:I believe there is a VERY active indoor community in NJ. Check out Hanger 1 at Lakehurst! They are hosting the US Junior Team Selection competition. Club is East Coast Indoor Modelers.

Coach Chuck


Dang, it's only an hour away. I'll see if I can get in contact with anyone near there.


Shoot me a private message with your email address. I've got folks up that way that can help you out.
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