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This helps me a lot. It may not have been necessary for others, but sometimes I am pretty slow, so thanks. 🙂

As I recall from our conversation on Saturday, you spoke of the Delta having an issue becasue you ignited all the motors at the same time. The outboard motors fired and were almost spent before the center engine came up…   Read more»

An L3 rocket is a lot simpler than a rocket of this scale. Once you get to this size the up part isn’t the hardest, it is the down part. Ask Kevin Trojanowski about big projects. They design them around…   Read more»

Thanks Ed. I understand. Just curious what Steve’s plan for all of this is, or has it been decided yet? If it is still undecided, which direction is it leaning. From the perspective of someone like me, the questions are…   Read more»

I believe if the Delta II was flown again there was talk of using the club’s system to ignite the center motor. Then use on-board timers with pull wires for the outboards. That way the center motor comes up to…   Read more»

As I recall from our conversation on Saturday, you spoke of the Delta having an issue becasue you ignited all the motors at the same time. The outboard motors fired and were almost spent before the center engine came up…   Read more»

Device to make sure upper stage is within safe angle from vertical (i.e. no more than 25 degrees), before firing upper stage.http://www.rocketelectronics.com/rocketiltometer-2-videos

Even includes information from Adrian and his Parrot/Raven systems.http://www.nar.org/pdf/2011HPRRDreport.pdf

Here’s a starter ROCSIM file from http://www.rocketryforum.com/showthread.php?t=8606#1….the rocket kept going UP and UP and UP after 12 hours of simulation! (They ejected the the strap on boosters during sim flight).

This one detects liftoff by using a novel g-switch. Then when that turns off it starts a timer then lights the motor after that. I’d set it for maybe 1-2 seconds after burnout, that way it lights them fast. I’d…   Read more»

i’ve got an adept stager that you could use.EdwardThanks .. those are nice. I would love to chat with someone who’s built/flown a large 2-stage (12″ diameter) and see how there connected the stages. I’ve yet to find any good…   Read more»

i’ve got an adept stager that you could use.Edward

Steve,What do you need besides a place to build it and lots of fiberglass cloth and resin? What are you going to need in the way of help? I am sorry if my question seems naive. I have never built…   Read more»

Steve,What do you need besides a place to build it and lots of fibreglass cloth and resin? What are you going to need in the way of help? I am sorry if my question seems niave. I have never built…   Read more»

This looks like an amazingly complex project!http://www.ilslaunch.com/launch-services/proton-mission-planners-guideThanks .. that’s a great site. Some real inspiration there. I like the details of the staging .. it shows a 4 cluster motor in the 2nd stage .. it would be cool to…   Read more»

This looks like an amazingly complex project!http://www.ilslaunch.com/launch-services/proton-mission-planners-guideAll items below available from the link above:Proton Launch System Mission Planner’s Guide1. Introduction2. LV Performance3. Spacecraft Environments4. Spacecraft Interfaces5. Mission Integration and Management6. Spacecraft and Launch…[Read more]

I’ll be gathering the parts I already have over the next week to see where we stand and what we still need.I do know we’ll need more fiberglass cloth and resin, a fair amount too, so if you know of…   Read more»

Let me poke around – I know some folks in Longmont area who may well have space. Might also recommend you talk to Ed Dawson – he and Joe Hinton did the huge Saturn V at Ed’s barn.

I’m with Ed on this – good to see you back Steve. The Delta II was one of the coolest projects I ever had a chance to participate in. I’m up near Estes Park these days. No Shop space to…   Read more»

Smash,Very nice looking project! I still mark the Delta II as one of the best rocketry experiences I’ve had. Life has gotten busy on me and I don’t do as much as I’d like anymore in rocketry. Need any chutes…   Read more»