Hi Everyone, Attached to this email and in the root directory of the Drive you will find the schedule outline for what we need to accomplish in the fall. We've spent the last two years figuring out how to build and operate rocket, now it's time to do it for real. This is the one that matters. We have a ton of things that we have to do, but they're all reasonably achievable because of the great team that we've built over the last two years. There are a couple of key drivers for the schedule. 1) Need to get through the Mk IIb test campaign in the fall. The basic strategy is to get everything working on the Mk IIb which is cheap and easy to test and then reduce the amount of testing done on the expensive Mk V. 2) Need to cold flow the Mk V in the fall before the winter sets in 3) Need to fly ASTRo before the winter. 4) We are only testing the Mk V 3 times (one cold flow, two hot fires). That means that Cold Flow needs to be a dress rehearsal for hot fire. As such, there are some things that we aren't working on that we need to be working on. Conversely there are some things that we are working on that we need to stop working on for the time being. Let's start with the vehicle: *Mk V* - I'm primarily going to be churning out models and drawings for various parts for manufacture over the next month - *Halstead *is having a ball making sims of valves, but we need to get that throttle valve fully CAD'ed and ready for fab by the end of this week. - *Jeremy *is making good progress on the tube drawings. Keep me updated, since getting those out for fab will be a long lead item. - I'll make the skyscraper when we get back on campus at EPIC - *Mehmet, *we're gonna need to bang out the e-regulator valve and the vent valve pretty much back to back as soon as school starts. Let's get good designs and drawings done on those and we'll make the call whether to send them to SIF soon. - We need somebody to make some simple 3 axis mill parts for the inside of the tank in EPIC *Electronics* Electronics has the toughest job here because everything is front-loaded. So we're going to live or die based on how well these guys do. Any support we can give them is crucial. - Great job getting Kronos and Hyperion out for fab! - *Matt, *we need Kronos Lite hardware in hand by Sept 13 - *Drew* is kicking butt on ground software. He's going to marathon to have it done by the end of this month, and then we're going to need to test the crap out of it before we go out for the first Mk IIb testing on Sept 13 - *Joe, *we need Hyperion software/firmware (Comms, DAQ, Servos w/feedback, auto sequences, and pyros) working by Sept 13 - *Everyone in electronics, *the way I'm splitting up firmware/software that will run on the rocket is into Engine Control Software (ECS) and Flight Software (FSW). Engine control software is the software that will run on Hermes and Kronos that will do comms, DAQ, servos, auto sequences, pyros, poppets, E-reg, vent, and autosequences. FSW is attitude control, roll control, recovery logic, and thrust termination - *Dean, *we will prioritize ECS because we need that running on both Hermes and Kronos by Nov 8. ASTRo lite will run a stripped down version of FSW. - *Halstead, *we're going to stop work on trajectory modeling for now because we don't need to figure that out until the winter - So to recap we need ground software, Kronos lite hardware, Hyperion firm/software, and ground electronics support (laptop, cables, power, etc) by Sept 13 - After that, it's Hermes hardware in hand by Sept 27, ASTRo FSW by 10/11, ECS by 11/8, and E-reg controls by 11/15 - If we can't make schedule and need to unload something, first thing to get pushed is ASTRo until the spring but we really should be aiming for the end of Oct. *Mk IIb* - *Ben, *I'm leaving the finer details of scheduling up to you. The key is that we have to be ready for hydrotest and cold flow by Sept 13 and then hot fire by Sept 27. The testing schedule for this is basically hot fire every two weeks, details are on the schedule. You guys need to get spooled up for fuel grain production. *GSE* - *Ben, *what's the plan on GSE for the Mk IIB? - *Ben, *as far as the Mk V GSE, we're going to need that all completely ready to go in time for the Mk V cold flow test on 11/15 - *Sindel, *we need the new top plate for the test stand ready for Mk IIb cold flows on Sept 13 - *Sindel, *we need the test stand ready for the Mk V by 10/18 for hydrotest, which will take place in the test stand. *ASTRo* - *Pete, *we need a good plan on what we're missing and what our plan is to get this rocket ready for flight. Targeting the end of October for launch. *Nose Cone/Recovery* - Not really thinking about this until the winter, but *Halstead* we need a concept level design so we can figure out what we need as far as space for the parachutes this week. -- David Armor Harris Boston University Rocket Propulsion Group davidh@xxxxxx
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