The Rocketry Forum

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  1. M

    Jolly Logic Chute Placement

    I'm adding a JL chute release to a 4" Mad Cow DX3 and I'm wondering about where to attach the chute. My DX3 has an AVbay and forward section for future use, and I'll be using motor ejection. I've checked through the forums and came up with 2 main ideas. I want to start with using a drogue just...
  2. Y

    Recovery System Problem

    When using the engines given by our rocket open rocket, there is no problem in the parachute system. Since we are given a different engine in the competition we will enter, we upload its file. When we simulate it acts like a parachute is not added. What do we have to do? Please help me.
  3. Culprit

    Chocolate Rocket

    This scratch build began with my son taking a knife to a Nerf football and stuffing it into a Tootsie Roll tube coin bank - a small one. He brought it to breakfast and told me he wanted to turn it into the Chocolate Rocket. He sourced some tube fins from the Rolo candy cane tubes you see at...
  4. Burak

    How can i open the parachute without any system on 600m

    Hello! I should open the parachute of payload on 600m. And i shouldn't use any recovery system. Is this imposible? Or is there any solution? Payload is not inside on rocket - free fall
  5. PBic

    Wanted Used 60" SkyAngle Classic II

    I’d Iike to get a good functional SkyAngle chute. PM if you’ve got one for sale. Thanks!
  6. R

    Make a parachute

    I'm new here, someone has some link or tips, to make a parachute, manually, In a diferent way of richard nakka? - Will be a 8 gore chute, about 100 cm diameter, nylon ripstop. (for a small rocket) thanks :)
  7. F

    TARC Questions

    Hi everyone, I'm leading a TARC team for the first time this year and I had a few questions. 1. We are using OpenRocket to model the rocket and everything looks fine but the flight time looks a little unrealistic. We are using two body tubes and the weight of the rocket is around 300g right...
  8. Buddy Michaelson

    Go Fast Rocket Kit

    I am currently working on a 1:3 Scale of our Space Shot Rocket, which will hopefully come out later this month or the first week in November. This rocket has a 75mm Body Tube and a 54mm MMT, and is 88” tall. The rocket will include a SCP Thrust Plate machined from billet aluminum and a 4.5”...
  9. sinclag

    New Hobby Parachute Line

    BlackCat Rocketry is delighted to announce the creation of a new line of hobby rocketry parachutes. Made from 1.1oz ripstop nylon Printed in 3 colour patterns sizes 10" and 12" diameter mil-spec paracord Perfect fore those small rockets where weight and airframe space are limited...
  10. Y

    what is difference between these parachutes

    hello everyone we will buy a parachute but we are undecided between two parachutes. first one is this parachute https://www.apogeerockets.com/Building_Supplies/Parachutes_Recovery_Equipment/Parachutes/High_Power/72in_Iris_Ultra_Parachute second one is this...
  11. M

    Position of Igniter and how to make one?

    Hello Everyone! I am new to model rocketry and completely do everything on my own.So,got struck at a point Problem is "Does the position of Igniter really matter ?" I mean where should we keep the igniter is it at the opening end of motor or else some what deep inside the motor? Please help...
  12. H

    Parachute drag coefficient on openrocket

    Hey folks! l am a student freshman level at university. l am planning to build HPR and have a problem. l want to use Dacron polyester material for my parachute. l am not sure whether Cd is correct on openrocket software or not. As Nasa resources, ıt would be 1.75. But as openrocket software ...
  13. K

    Help Plz. Arduino to calc rate of descent.

    I have a Nano, a Neo-6 GPS, an SD card, and BME-280. I'm wanting to measure rate of descent of different parachute designs I'm working on. What would be the calculations of the data gathered by the BME-080 (for altitude changes). Could I use the GPS for the rtc to timestamp each data...
  14. Gary Mac

    Military Surplus 6' Parachute

    Anyone have experience with these parachutes? Unusual shape/design, and it comes with a deployment bag. Seems like a decent deal for $30 and a well built canopy, and "advertised" for a 10 lb weight. Google research from the pn# seems to indicate that they for some kind of 2000lb Vietnam-era...