All Rights Reserved. An adapted version of fldigi for HAB tracking, chase car apps Launch and Landing Site Selection. Once released, the balloon diameter increases because the pressure on the outside is decreasing as the balloon rises. <> The valuable HABHUB tools including burst calculator, Launch predictor, and tracker. by 453.6 to get grams) - and read more about the burst calculator assumptions here.Change the altitude to trade off max altitude with climb … endobj The lower the altitude, the more volume of helium that will be required and the faster your balloon will climb; use this to shorten the distance it will travel to landing if necessary. endobj Fast climb rates, such as 5 m/s or greater, will result in shorter flight times, but may also result in unsteady vortex shedding behind the balloon, causing any video or pictures taken during the flight to be unsteady. An ascent and descent rate of five meters per second is right around 1,000 feet per minute and typical of … A few months back, we introduced you to the Habhub Burst Calculator tool in our Space Camp #3 blog post about flight path predictions. %���� location to habitat, Join us in #highaltitude on irc.freenode.net, Mailing list which focuses on UKHAS tools and The second variable that will affect how high your balloon will reach is the volume of helium (or other gas) that you start with. by 453.6 to get grams) - and read more about the burst calculator assumptions here. This chute has only 4 lines (fewer lines – less chances to tangle them). Published data for burst parameters of various Kaymont (Totex) and Hwoyee balloons is given below: Kaymont (Totex) Balloon Burst Data. endobj Designing his own unique photographic payload, high altitude ballooning enthusiast Carl Kalkof reached 103,000 feet during this launch. 10:57. After you have your burst altitude and climb rate from Step 1, use the Habhub Predictor to estimate your flight path. To convert to Coordinated Universal Time (UTC), simply use Google search by entering (for example) “convert 5PM EST to UTC”, to convert Eastern Standard Time to UTC. Knowing the key characteristics #1-3 above, use the Habhub Burst Estimator to determine your maximum achievable altitude, based on your balloon type and payload weight (multiply your mass in lbs. In this situation the sonde has been configured with another kind of timer, which starts counting down from launch. Kindly donated by Anthony Stirk. Another implementation of the same algorithms can be found here: http://randomaerospace.com/Random_Aerospace/Balloons.html#widget13. In the current situation, high altitude balloons … PREDICTION STEP 1: Knowing the key characteristics #1-3 above, use the Habhub Burst Estimator to determine your maximum achievable altitude, based on your balloon type and payload weight (multiply your mass in lbs. High Altitude Balloon Launch #4, Four Key Lessons from a Recent Balloon Launch. To make sure that we reached our objective altitude, we had to ensure that we chose the proper launch configuration. Starting around 6:16 we go through the HabHub web app and look at the code to see how it is calculating these values. I think unless you can predict which profile your going to get your probably better off not over-complicating the modeling. ���� JFIF ` ` �� C kraken.habhub.org x���[k�@����h�ڙ���%- II[���+��:n����]�.^ER�`F��if�Y�{��(������0[�a�gθs�h�H��p}��l�.���n����m�u Ӻ.�߫o�*f��>��域Uq_nwOe�;0[�Y��q �M�!p�APB0gArF����p��g��`y�gW^�T��E���6��٠�A mԄ��q�(OM�Q�y�C%���n��ț�.��_�o I^�b�l�v/P*Ì���͋��[PZ3 ����;�±�I�]� �MR����z_n+�|��$���.�#�1ĸ��ĜJ��9˜!-�I��v�4���c�$Ş��*t��9d1������r��Q�뫵�E�q���=�B s.��;'BQ�ET��Ήah�?��CGIa@�Hb:) �uhO�ḥPd+HъN@��W�|}*�� ���D������2��A_m���>��X��4��TL�ˍe����;T������@%Y�N3# ���r��зU��[�F�5�����t#�{Ȅ�k�{�� I will post this info in the description and comment section of the video. endobj 8 0 obj stream HabHub. Hwoyee Balloon Burst Data. FAA Part 101 - payload cut-down systems? Source: https://ukhas.org.uk/guides:balloon_dataThe data above is based on the use of Hydrogen rather than Helium.Note: It is not recommended to use the Burst Altitude data published on Kaymont's website. HabHub. Courtesy of Carl Kalkof, 2019 Zeusbot logs from #highaltitude on irc.freenode.net. Keep the default of 5 m/s, as long as you are using a 24” parachute with the 1.75 lb payload with a ~6" cube Styrofoam cooler. kraken was retired in July 2015. nessie We recommend keeping the nominal climb rate between 4-5 m/s for optimal results (steady photography, reasonable flight times, etc.). Live SSDV imagery from HAB payloads, IRC The first piece of data that is needed is the Balloon Size and Manufacturer. A great source of HAB information, predictor %PDF-1.5 habitat - Engineering Flight Test (EFT) 3, The Most 1337 Doge Yet - Engineering Flight Test (EFT) 2, The Doge Seen Round the World - Engineering Flight Test 1 (EFT-1), Each balloon size and manufacturer will have a different Burst Diameter/Burst Altitude combination. The mass of the balloon determines how much inflation gas (Hydrogen or Helium) the balloon can hold. nessie.habhub.org I tried distributing the weight evenly so that the payload would fly level and not tilt to one side. burst calculator Balloon burst calculator written by CUSF dl-fldigi An adapted version of fldigi for HAB tracking chase car apps Mobile applications to broadcast your chase car location to habitat ssdv Live SSDV imagery from HAB payloads CHDK Difficulty . Launch Date Launch Time Duration Range KML files can be dragged into Google Earth to display a 3D flight path, and multiple flight paths (or comparisons) can be turned on/off: Now, iterate the launch time/date or location until you get your desired landing location. programming projects, IRC Logs $.' HOW TO GUIDE (Leaving kaymont.com) MEDIA. According to the table on Rocketman’s web site, 5′ chute would slow down 4lb payload to 15 ft/sec. Enter your planned launch time (UTC). How to Calculate Burst Altitude for Balloons and HabHub Overview - Duration: 10:57. Perhaps you recognize this post's cover photo from a recent Late Show with Stephen Colbert skit: Astronaut Ice Cream is a Lie. 9 0 obj as you will need these values in step 2. Change the altitude to trade off max altitude with climb speed (multiply meters by 3.3 to get the equivalent altitude in feet). UKHAS. Knowing the key characteristics #1-3 above, use the Habhub Burst Estimator to determine your maximum achievable altitude, based on your balloon type and payload weight (multiply your mass in lbs. Courtesy of Carl Kalkof, 2019 All Rights Reserved. ), but this blog post will be focusing on the impact on burst diameter and altitude only. There is also an Excel version of the Burst Calculator available for download here, in case you need access to burst calculations without internet access or if you want to modify it for your own custom launch configuration. Hit “Run Prediction”. Starting around 6:16 we … High Altitude Balloon Launch #4, SPACE Camp Lesson #2 - Balloon Tracking and Recovery Methods (ie Telemetry), Quick Launch Inflation System for High Altitude Balloons, Doubling Down on Doge - Engineering Flight Test (EFT) 4, The Doge has Landed! Totex also seems to have the fewest Early Burst Failures (EBF - where the balloon typically rips rather than bursts at a lower than expected altitude - usually about 20Km). There are several inherent assumptions in the HabHub Balloon Burst Calculator to be aware of. Near-Space Balloon Burst Altitude Calculator - Science, Four Key Lessons from a Recent Balloon Launch. phorcys.habhub.org Fortunately, there is a free website, Habhub, that uses all of this to give you balloon predictions for free! I chose a burst altitude of 27,000 meters based on the output from the HabHub Burst Calculator (and my experience). <> The weight of HAB-2 payload was a few ounces shy of 4 lb. To tie everything together, I cut 15-feet pieces of Dacron line and tied double bowline knots on the ends. More detail about using the burst estimator is provided in our Nozzle Lift Overview article. BloonStu Recommended for … The habhub homepage HTML 3 1 0 0 Updated Jul 9, 2015. habitat-monocle HTML 0 0 0 0 Updated Jun 21, 2015. According to the ideal gas law, PV = nRT, where: Assuming that the amount of the gas in the balloon is constant, the number of moles of gas "n" is constant, the Universal Gas Constant "R" remains the same, and assuming small changes in temperature "T", then the numerator "nRT" can be assumed to be a constant. HIGH ALTITUDE BALLOON PROJECT. We made a video that dives into the HabHub burst calculator code. Balloon Burst Diameter and Altitude Data is based on published values for Kaymont (Totex) and Hwoyee balloons (See tables above) Standard Atmospheric Properties - hotter or colder atmospheric properties will lead to non-standard densities at altitude, and will have a minor impact on your balloon's performance. The final value, Nozzle Lift, is the parameter that will determine your burst altitude as well as your rate of climb, and thus, time of flight. Balloon with GoPro to Near Space - Duration: 8:28. An adapted version of fldigi for HAB tracking, Mobile applications to broadcast your chase car 1 0 obj When a balloon is initially filled with Helium, the starting diameter is determined by the point when the internal balloon pressure of the gas equals the external pressure from the atmosphere. Keep in mind that besides influencing the burst altitude, different helium volumes will also affect your climb rate, time of flight, and whether your balloon may be unsteady during climb. Copyright © 2020 Launch With Us. Kindly donated by Anthony Stirk. by 453.6 to get grams) - and read more about the burst calculator assumptions here. They are: Note: Some advanced users can expand the "Constants (Advanced)" fields in the HabHub calculator to use non-standard air densities, adjust for using other Gases besides Helium, and even adjust Gravitational Acceleration (anyone looking to launch on the moon?!).

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