Do all the milestones carry equal dollar value? Doesn't seem like they should.
Has the SpaceX milestone 2 Initial Propulsion Module Testing Complete April 2015 been officially accepted by NASA? Should be done because the used it for the pad abort.
Quote from: Jcc on 06/12/2015 12:49 amDo all the milestones carry equal dollar value? Doesn't seem like they should.I don't think it's unreasonable for me to reveal that they don't. Still trying to find a public list of payments. Kinda ridiculous that this information isn't available to everyone.
"2017 JanSpaceX Design Certification ReviewSpaceX Parachute Qual Test Complete"What is the purpose of the Parachute Qual Test? They did the test off Morro Bay, the Pad Abort Test, and presumably, they will do the Max-Q Abort Test, all of which used (or will use), the system which will fly on the manned spacecraft.
SpaceX will conduct a series of tests on the parachute system in nominal and off-nominal configurations, enveloping conditions for abort and nominal entry scenarios. As describedin DRD 108 Verification and Validation Plan, these tests will demonstrate that the design and buildof the Crew Dragon parachute system meets the intent of Section 4 of JSC-65985, Requirements forHuman Spaceflight for the Trailing Deployable Aerodynamic Decelerator (TDAD) System.Complete human-rating of the parachute system will leverage these tests along with additionalanalysis, inspection and lessons learned from the pad and in-flight abort tests conducted duringCCiCap. The Parachute Qualification milestone will be completed after the Flight to ISS withoutCrew milestone because the latter does not require this level of human-rating for a flight withoutcrew, and any in-flight observations from that test flight can be used to inform the test plan forparachute qualification.The Dragon parachute system is critical to the safety of crew members during all missions. Itspurpose is to stabilize and decelerate the vehicle to an appropriate descent rate for a safe landlanding for all mission cases. The system must not only decelerate the Dragon from the extremevelocities of orbital entry, but must also be able to quickly establish aerodynamic control of thevehicle for aborted launches, the strictest of these scenarios being an emergency event at the launchpad. The parachutes make up a sophisticated system subject to many failure modes both known andunknown, high and potentially uncertain loads, and a wide range of initial conditions. As such,multiple tests in a full scale and flight-like configuration are required to demonstrate and observeaspects such as redundancy effectiveness, performance dispersions, and structural integrity.
Quote from: Jcc on 06/11/2015 11:45 pmHas the SpaceX milestone 2 Initial Propulsion Module Testing Complete April 2015 been officially accepted by NASA? Should be done because the used it for the pad abort.Pad abort tested the launch abort engines (SuperDraco), not the sets of thrusters that will be used in orbit (Draco).
Checking to see if I got this wrong.My understanding was the Super Dracos would replace the Dracos. That was the reason for SDs super throttleable ability, to produce the proper thrust for manuevers.
Quote from: gongora on 06/12/2015 01:01 amQuote from: Jcc on 06/11/2015 11:45 pmHas the SpaceX milestone 2 Initial Propulsion Module Testing Complete April 2015 been officially accepted by NASA? Should be done because the used it for the pad abort.Pad abort tested the launch abort engines (SuperDraco), not the sets of thrusters that will be used in orbit (Draco).The Draco engines are the primary maneuvering thrusters for the current generation of Dragon. As it stands, I'd have to say that they've pretty much been fully tested by now.
Quote from: JasonAW3 on 06/12/2015 04:07 pmQuote from: gongora on 06/12/2015 01:01 amQuote from: Jcc on 06/11/2015 11:45 pmHas the SpaceX milestone 2 Initial Propulsion Module Testing Complete April 2015 been officially accepted by NASA? Should be done because the used it for the pad abort.Pad abort tested the launch abort engines (SuperDraco), not the sets of thrusters that will be used in orbit (Draco).The Draco engines are the primary maneuvering thrusters for the current generation of Dragon. As it stands, I'd have to say that they've pretty much been fully tested by now.Yep, the engines have been tested on cargo Dragon. The control system will be at least somewhat different on crew Dragon. For one thing, it will have to have "manual" control options, which don't exist in the current system. Ain't no hand controllers in the cargo Dragon, after all.The proper function of the Dracos has to be tested in the context of the flight control system that will be used in crew Dragon. Yeah, the engines fire -- but will they fire when commanded, exactly as commanded, by the FCS? That's more what the Draco milestone is talking about, I'm sure.