Documents

2017-2018 Requirements: nsl_un_2018

Proposal: UAH_CRW_SLI_Proposal_2017-2018

Preliminary Design Review: UAH-2018-PDR-Document

  UAH-2018-PDR-Presentation

  UAH-2018-PDR-Flysheet

Critical Design Review: UAH-2018-CDR-Document

UAH-2018-CDR-Presentation

UAH-2018-CDR-Flysheet

Flight Readiness Review: UAH-2018-FRR-Report

   UAH-2018-FRR-Presentation

   UAH-2018-FRR-Flysheet

Post-Launch Assessment Review: UAH-2018-PLAR-Report

Full Scale Second Flight

On March 3rd, while some team members were doing local outreach, and others were working on the FRR, the Charger Rocket Works team returned to Samson, AL to fly the competition rocket on the competition motor, the L1520. Four team members and the team’s mentor successfully flew the rocket to around 4700 feet. The rocket preparation went incredibly smoothly, but the flight an recovery were a bit more messy. Due to high wind speeds and a high stability margin, the rocket flew at a rather steep angle of about 15° causing the significantly lower than expected altitude. The rocket landed just beyond a nearby river stuck in 2 large trees roughly 3500 feet from the launch pad. After a couple hours of pulling with the help of local fliers and farmers, the team liberated the rocket from the tree, only damaging a shock cord and parachute, which will be easily repaired before the next flight. Now, having returned to UAH, the entire team is finishing up the FRR and planning for another flight test.

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Full Scale First Flight

Four members of the Charger Rocket Works team traveled to Samson, AL on February 24th to fly with the SouthEast Alabama Rocketry Society. The team departed from Huntsville at 4:20 am and stopped on the south side of Birmingham for breakfast. Once they got to the field, the team quickly set up its launch operations and began following our launch procedures. Due to the limited number of members at the field, all hands were busy assembling and no one was able to take photos of the preparation. The rocket was placed on the launchpad around noon after the FSU team flew their rocket. The launch was beautiful, but a little higher than expected with an apogee of 6894 feet. The team was able to recover the rocket after it drifted a little over a mile away. After thanking the TRA prefects who supervised the launch, we packed up and headed back to Huntsville with a stop in Montgomery for dinner. Due to our higher than predicted altitude, we petitioned NASA for a motor change waiver and now plan to fly an Aerotech L1520 at competition. A test flight with this motor is planned for March 3rd. Stay tuned for updates as we wrap up our flight readiness review, our final outreach event, and get another test flight in.DSC_0257DSC_0258DSC_0259DSC_0268

Full Scale Launch: Try 1

This past week the CRW has been hard at work finishing putting our first full scale rocket together. The team experienced some technical issues while using the 3D printer, which resulted in a printer shut down and the need to locate another printer to use. Thankfully, the printer issue was resolved and the team also located a back-up printer incase another issue were to happen.

The team really pulled together this week and finished assembling their first rocket. Sunday morning came with an early rise to make sure that all parts of the rocket made it to the field. The team then traveled down to Childersburg, Alabama for the launch. While the sky was a bit overcast and cloudy, the team was hopeful for a break in the sky to get to launch. With the rocket assembled and the team picture taken, one of the range officers approached the team and brought some unsettling news. The cloud coverage wasn’t going to break.

Disappointed and concerned looks were exchanged between teammates. The team was really looking forward to launching the maiden flight of their full scale rocket. Despite trying to find a way to lower the altitude of the flight, the call was eventually made to not try and adjust the motor just for the sake of flying. The option was presented to launch next weekend in Elizabethtown, Kentucky.

With heavy hearts, the team started to disassemble the rocket. Teammates shared their immediate thoughts to boost morale. Teammate Andrew said that “I mean, it was a good dry run to show that we can do everything. Next time should go smoother.” Teammate Davis said “We assembled the rocket very efficiently and definitely ironed out the kinks in our SOP. Personally, I’m extremely impressed with how smoothly our assembly went despite the snags with the fin can and shear pin hole alignment.”

Figuring that the launch would fill the whole day, most members decided to use the extra time to grab a bite to eat before heading back. Many team members wanted to stop at an Alabama favorite, Milo’s Hamburgers. Milo’s is mostly known for its hamburgers and its sweet tea. Teammate Justin wishes that there was one closer to Huntsville because he really enjoys it.

After getting home and letting team members get some sleep and work on homework, teammate and Project Manager Nathanial said that “The team really came together to get this rocket built. Multiple team members took on responsibilities exceeding their expected deliverables. The planning process was much improved from the subscale build, and challenges were taken in stride. I feel like this was the most fun the team had had in a while.”

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Subscale Launch 12/16

The team arrived to the field in Childersburg, AL around 10:00 am and immediately started following our procedures to prepare the rocket for launch.IMG_3803IMG_3804IMG_3805IMG_3824Our project manager made sure our parachute wasn’t tangled.IMG_3838IMG_3848IMG_3852IMG_3854IMG_3867IMG_3868First flight of the day!IMG_3920IMG_3923IMG_3924IMG_3925IMG_3930IMG_3933IMG_3934IMG_3940IMG_3951IMG_3959IMG_3961After a successful launch and recovery, the team quickly turned the rocket around to launch again.IMG_4025IMG_4028IMG_4029IMG_4036IMG_4037IMG_4039IMG_4042IMG_4045The subscale reached a max altitude of over 3100 feet. Analysis of the flight data is underway!