#1
|
|||
|
|||
New Goony
Weather permitting, this is one of the birds that I plan to fly this weekend. I just bought the paint yesterday, but didn't realize at the time how much the rocket was going to look like some kind of Miami Dolphins bird. The motormount was one I had laying around from Thrustline. It's a 2x18mm, 24mm cluster. I'm thinking about an E9-4 first flight and maybe an E9-4, 2xC6-5 if that works out okay.
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Centuri Design Contest F-150 Hurricane Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2 |
#2
|
|||
|
|||
Quote:
Now that's just too cool .....
__________________
Steve Naquin TRA# 677 L2 NAR# 85518 L2 SAM# 0052 🚀 In Construction: Der Blue Maxx/Minie-Magg 5.5” & Vander-Burn MDRM Clone w/Stickershock23 Custom Decals 🚀 In Paint & Detail: USR Banshee 🚀 In Build Queue: Estes Doorknob w/Vander-Burn Rocketry Upgrade Kit [Sport Decor], Semroc Centurion-F, Semroc Egg Crate 🚀 In Repair: SLS Lil’ Hustler, SLS Aero-Dart 1969 Trim 🚀 Stay Tuned For Fall 2021 Launch Dates |
#3
|
|||
|
|||
Quote:
That sounds like an awful lot of power for a little rocket. Let us know how it works out. |
#4
|
|||
|
|||
Quote:
I would, but I left it on the kitchen table and didn't realize it until I was 40 miles away from homw. I did get to fly the MadCow Hawk, which made the day worthwhile. Aside from that, I just took pictures. It was pretty windy.
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Centuri Design Contest F-150 Hurricane Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2 |
#5
|
||||
|
||||
Quote:
Sorry you didn't get to fly it, but welcome to the Tim Allen side of BP rocketry This combo sounds short to me. I'm thinking E9-6 and C6-7's instead. My rationale is that one type pops at apogee and the other afterward. IE, top and late, but not early. The E9-4 will have a duration of 3.09+3.26=6.35 seconds burn+delay (NAR data). The C6-5's will be 1.86+4.29=6.15. So your total durations match well, but this is F impulse (27.87+2x8.82=45.51Ns), in a ~Fat Boy. I flew my stretched Fat Boy on an F23-7. That was more impulse, but only by 7Ns. Using C6-7's and an E9-6, you get 1.86+6.24=8.10 and 3.09+5.97=9.06 seconds of duration, with the C6-7's deploying the chute and the E9-6 as backup. In test engineering, they have an old saying: One test is worth a thousand expert opinions I suppose a sim would be the next best thing BTW, if you're worried about too much ejection charge, I've plugged C6-0's using a 1/2" long piece of 1/2" dowel and epoxy. Doug |
#6
|
|||
|
|||
Quote:
Thanks for the info, Doug. I have two specially plugged spent 18mm casings that I plan to friction fit for at least the first flight. I don't know that I'll try the cluster until after I've had a successful E9 flight. Then again, if I keep leaving it in the kitchen on flight days, I really won't have to worry.
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Centuri Design Contest F-150 Hurricane Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2 |
#7
|
||||
|
||||
I was curious as to whether this guy was ever sent up.
|
#8
|
|||
|
|||
Quote:
Not yet. Both club launches were cancelled this weekend, and I'm down with bronchitis anyway. I'm trying to figure out how to get the colors right for the decals, but I haven't had much in the way of energy lately.
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Centuri Design Contest F-150 Hurricane Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2 |
Thread Tools | Search this Thread |
Display Modes | |
|
|