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RockSim Virtual Rocket Contest #6
CONTEST - IS OVER!
Contests:   All   Previous   Next

Essence's Model Rocketry Reviews (EMRR) is happy to introduce the sixth "virtual" rocket contest.

The theme for this contest is Longnecks.

This is a term that may have originated from EMRR for tall skinny rockets with a length-to-diameter ratio of at least 30:1. In other words, all qualified entries must be at least 30 times longer than their largest diameter.

So, grab your favorite rocket simulation software and build a rocket that meets the requirements below. The official flights will be run using RockSim ver 7.04, but any software (RockSim Free Demo, SpaceCAD, VCP) can be used to test your design. Heck, you can even do it by hand if you want.

The "virtual fly-off" will start on February 28, 2005.

Contest Requirements:

  • RockSim Owners: Entry must be (1) RKT files (any version)
  • RockSim DEMO Entries: Entry must include the following:
    • All the information from the Parts List
    • A drawing of your fins with dimensions clearly indicated
    • Thickness of your fins (material is in Parts List)
    • Location of your fins with reference to the rear of the rocket in inches
    • Please contact EMRR beforehand for tips on submitting demo entries
    • Demo entries may require follow-up questions from the judges to ensure that what we judge is an accurate copy of what you intended
  • Name your Rocket
  • Contestants may only have (1) entry
  • Contestants must be on EMRR's Announcement List to be eligible
  • Build Bonus: Bonus points will be gained if you build, fly and produce pictures of the rocket:
    • +1 point for picture of the rocket static
    • +1 point for picture of the rocket launching or descending
  • Newbie Bonus: To encourage new contestants, bonus points will be awarded to first- and second-time contestants
    • +1.6 points for first-time entrants
    • +0.5 points for second-time entrants
  • Early Bird Bonus: To reduce log-jams near the contest deadline contestants, early entrants will receive bonus points, based on the time they submit a qualified design.
    • +0.9 points for first entrant
    • +0.8 points for second entrant
    • etc. to 0.1 points for 9th entrant
    • No early bird bonus during final week, regardless of order of entry
  • Entries must be received by 2/27/2005. A contestant whose entry does not meet the contest guidelines will be notified and allowed to re-submit a corrected entry. Please submit your entries early to ensure that you will have time to make corrections if necessary. This is especially important for RockSim demo and other software entries.
  • Contest will take place from 2/28 - 3/4.

CLICK HERE FOR Q A

CLICK HERE FOR Fine Print

RockSim Rocket Design Requirements:

  • Length/Diameter Ratio:
    • All designs must have Length/Diameter ratio (L/D) >= 30:1. The largest diameter tubing will be used for this calculation.
    • Nose cones and transitions must not account for more than 25% of the total length.
    • For multi-stage designs, the L/D must be >=30:1 at all times during the flight. Booster stages do not need to be >30:1 by themselves. For example, an upper stage that is 26" x 0.736 (35:1) with a 4"x0.976 booster would be legal ((26+4)/0.976" = 31:1), even though the booster by itself is only 4:1.
    • No external boosters. Clustered engines are allowed to hang out the back of their airframe tube, but may not stick out the sides. For example, you may not strap four 24mm motors on the outside of a 13mm central tube and count that as a 0.544" diameter. You would need to surround the engines mounts with a 2.6" tube.
  • Body Tubes:
    • All tubing must come from RockSim database.
    • Tubing sections may not be longer than their database default lengths. Tubing sections must be joined by realistic couplers, bulkheads, transitions, centering rings, or sleeves.
  • Motor Configuration:
    • Designer's choice (staged, cluster, or single-engine)
    • Unlimited impulse allowed.
    • Loaded takeoff weight must be less than 16.0 oz.
    • Black-Powder motors only (Estes or Quest), from MicroMaxx through E9. These are valid Motors and Curves (virtual6.eng)
      (if you need assistance loading these, e-mail EMRR)
    • You must choose your motors for each Event
      • Motors may the same size or smaller than their motor tube size; exact size is not required. (This is a change from previous contests).
      • Motor tubes may be left empty for some events. (This is a change from previous contests.)
    • No manual modification of the .eng file
    • Motor overhang will be the default 0.5 inches unless told otherwise.
    • If you use a Booster, the following are allowable Booster Motors:
      • Booster 24mm - C11-0, D12-0, E9-0
      • Booster 18mm - C6-0 or B6-0
      • Booster 13mm - A10-0
    • No on-board electronics to perform staging, air-starts, or ejection.
  • Fins:
    • There must be at least 2 sets of 3 - 8 fins.
    • One set must be completely in front of the midpoint.
    • Each qualified set must have a semi-span and a root length at least as wide as the tube it is mounted to.
    • At least one fin set must be a Custom Design with at least 7 corners (include leading and trailing edges). Corners closer than 1/8" to each other are allowed but do not count toward the required number (the idea is to have interesting shapes and not just rounded corners).
    • Additional sets of 2-8 fins are optional. These extra fins do not need to meet the location, semi-span, or root-length requirements.
    • Fins can not be any thinner than 1/8" of an inch if balsa, cardboard, or paper, or 1/16" if stronger material.
    • Tube fins and ring fins are allowed, but must have both their mass and drag accounted for. (see how-to article)
  • Recovery:
    • Streamer recovery.
    • Streamer must be at least 0.001" thick.
    • Maximum width: 12"
    • Maximum length: Whatever will fit into the body tube.
    • Streamer folding IS allowed to increase the drag.
    • Must include a realistic shock cord.
  • Launch lugs are OPTIONAL. We will be flying from virtual 6-foot towers. (This is a change from previous contests).
  • Materials must be standard weights that are in the Rocksim database
  • Materials must be standard thicknesses that are in the Rocksim database
  • NO CP Overrides
  • NO Mass Overrides (other than those in the standard RockSim database)
  • Mass Objects ARE allowed for adjusting CG. (This is a change from previous contests).
  • Must have at least 1 caliber of stability (RockSim Based) when loaded with your selected motor(s)
  • Appearance:
    • Select the rocket part colors that your would like to see posted. If you want, you may use the "decal" feature of RockSim 7.04 to display artwork on your rocket. (see here - PDF)

Contest Events:

  • Your rockets will participate in four events and will accumulate a total score. All events will use a 72" launch tower and your choice of motor configuration (different for each event). For each event, you must also choose a launch angle, no more than +/- 15 degrees.
    1. Altitude: (See Results) Go as high as you can, but do it with style. The score for this event will be based on a combined ranking from each of these categories.
      1a) Max Altitude (Hint: High impulse engines in short light designs do well here.)
      1b) Adjusted Altitude = Max Altitude * (L/D) / 30 (Hint: High impulse engines help here too. Adding length hurts the altitude, but the (L/D) factor goes up faster than the altitude goes down, so there's incentive to stretch longer.)
      1c) Altitude Efficiency = Max Altitude / Total Impulse (Hint: Here's where the tiny engines kick butt on the big boys.)
    2. Streamer Duration: (See Results) Score = Hang Time (sec) + (L/D). (Hint: This one encourages longer skinnier rockets and larger streamers. Adding length hurts the altitude, but the (L/D) term can counteract that. Large streamers can help the hang time but the extra weight will hurt in the other events, so trade off carefully.)
    3. Low and Slow: (See Results) The score for this event will be based on a combined ranking from each of these categories.
      3a) Lowest apogee
      3b) Slowest max speed
      DQ Condition: The bottom stage must clear the tower, and the upper stage must reach at least 50 feet altitude to qualify. (Hint: This event is mostly about engine selection.)
    4. Drag Race: (See Results) The score for this event will be based on a combined ranking from each of these categories.
      4a) Fastest time to clear the tower
      4b) Longest time to landing
      4c) Closest landing to pad
  • Flight Conditions:
    • Your rocket will fly in RockSim 7 default conditions except as noted below.
    • Wind Conditions: Calm (0-2 mph)
    • Wind Turbulence: Fairly Constant Speed (0.01)
    • Cloud Coverage: No Thermals
    • Launch Guide Length: 72 inches
    • Misfires: None
    • Exception: For the Drag Race, the wind speed will be between 2 and 8 MPH, No variability. All contestants will use the same wind speed, but that speed will not be revealed in advance
  • DQ Conditions
    • It will be almost impossible to DQ, and randomness is almost completely eliminated.
  • DQ Results
    • No results for just that event (you will get 1 point in the placement score)
    • Lost rocket is only lost for that event

* NOTE: All "contest" settings and entries will not be disclosed until all entries are in!

  • Submission Checklist
    • RockSim RKT file
    • Rocket Name
    • Loaded takeoff weight must be less than 16.0 oz
    • Motor and rod angle selections for Events below:
      (Launch angle limited to +/- 15 degrees. Be sure to give the proper "plus" or "minus" sign indication. If no sign is specified, we will assume you wanted "minus", into the wind.)
Event Motor
Selection
Launch Angle
Altitude _________ (+/-) ____ Degree
Streamer Duration _________ (+/-) ____ Degree
Low & Slow _________ (+/-) ____ Degree
Drag Race _________ (+/-) ____ Degree

PRIZE TABLE:

Alf
Anonymous Guest
Mean Machine
(1) Estes Mean Machine, 24mm Kit
BRS Hobbies
BRS Hobbies
(1) ASP Tall Boym Longneck, 24mm Kit
FlisKits
FlisKits
Richter
(1) Richter Recker Longneck, Cluster 24mm Kit
Sunward
Sunward Aerospace
CFX
(1) CFX-SIX FOOTER Longneck, 24mm Kit
USR
U.S. Rockets
Tall Tail 10
(1) Tall Tail 10 Longneck, 29/24mm Kit

FINAL RESULTS:

ID Rocketeer Total Event
#1

P
O
I
N
T
S
Event
#2
P
O
I
N
T
S
Event
#3
P
O
I
N
T
S
Event
#4
P
O
I
N
T
S
Build
Bonus
Newbie
Bonus
Early
Entry
Bonus
17 Bob Cox 72.0 18 18 19 17 0 0 0
3 Claude Paquin 56.7 7 19 12 18 0 0 0.7
18 Dave Austerberry 53.5 13 8 16 16 0 0.5 0
6 Chris Coffin 51.0 15 13 14 7 0 1.6 0.4
13 Chan Stevens 50.0 13 17 5 15 0 0 0
12 Bruce Levison 47.0 16 15 5 11 0 0 0
1 Todd Mullin 45.9 19 14 3 9 0 0 0.9
10 Jeff Caldwell 41.5 6 6 10 19 0 0.5 0
11 Jim Myers 41.0 9 12 18 2 0 0 0
14 Joe Policy 41.0 9 11 8 11 2 0 0
8 John Bonnett 40.8 5 10 14 10 0 1.6 0.2
4 Bill Cooke 39.2 12 7 5 13 0 1.6 0.6
19 Clive Davis 36.0 16 16 2 2 0 0 0
16 Jeff Henry 31.6 8 9 8 5 0 1.6 0
2 R.S. Barker 29.4 2 4 17 4 0 1.6 0.8
5 Layne Rossi 29.1 1 1 12 13 0 1.6 0.5
7 Lance Alligood 26.9 4 3 11 7 0 1.6 0.3
9 Bob Theobald 23.6 9 5 4 5 0 0.5 0.1
15 Eric Maglio 8.6 3 2 1 1 0 1.6 0
ROCKETEER NAME OF ROCKET ROCKSIM BONUSES
BB  NB  EBB
CURRENT
STANDING
(Event #1, #2, #3)
#17 - Bob Cox Elongation of Zeus image       1
3-Stage
Streamer: 180x12x0.001
(folded)
Event#1:
E9-0+A10-0(x8); E9-0; E9-8
Rod (0)
Event#2:
E9-0+A10-0(x8); E9-0; E9-8
Rod (0)
Event#3:
A10-0; A10-0; MMaxx-1
Rod (0)
Event#4:
E9-0+A10-0(x8); E9-0; E9-8
Rod (-15)
image
Bob indicated, "I spent about 10 hours over the last three days working on it, bringing the total time to about 25 hours. With some changes I made this week I was able to boost the altitude about 50% and the streamer duration about 75%. I hope that's enough." 25 hours of prep work for a total of 42 minutes in the air... how'd he do?
#3 - Claude Paquin Flaming Spaghettini image     0.7 4
2-Stage
Streamer: 600x12x0.001
(folded)
Event#1:
E9-0(x3)+A10-0+C6-0(x3); E9-8
Rod (3)
Event#2:
E9-0(x3)+A10-0+C6-0(x3); E9-8
Rod (3)
Event#3:
A10-0; MMaxx-1
Rod (-15)
Event#4:
E9-0(x3)+A10-0+C6-0(x3); E9-8
Rod(-15)
image
Claude enters his 3rd VC with his "Flaming Spaghettini". He shoved the biggest streamer possible into this rocket. I had to zoom in very close to make sure it was within the tube lines. That gave him the solid 1st place in the Streamer Duration. He also placed 2nd in the Drag Race using that long streamer to secure the Longest Time in the Air.
#18 - Dave Austerberry Flying Syringe image   0.5   5
1-Stage
Streamer: 22.1x2.2x0.001
(folded)
Event#1:
E9-8
Rod (0)
Event#2:
E9-6
Rod (0)
Event#3:
1/4A3-2
Rod (0)
Event#4:
E9-8
Rod (-15)
image
Dave is coming back to the contest field for the second time. He is walking a bit tall after winning VC#5. He stayed in that upper 3rd the whole time with his best events being the Low and Slow and Drag Race. Nice job, and welcome back (come again)!
#6 - Chris Coffin Dreaming#3 image   1.6 0.4 2
3-Stage
Streamer: 72x12x0.001
(not folded)
Event#1:
E9-0; E9-0; E9-8
Rod (0)
Event#2:
E9-0; E9-0; E9-8
Rod (0)
Event#3:
1/2A6-2
Rod (0)
Event#4:
E9-0; E9-0; E9-8
Rod (-11.796)
image
I was loving the fact that all these newbies were flying this time. Chris' rocket scared me! At the time of his entry, he was the second highest flier. He gave high end performance and with a little more attention to the drag race could have placed higher. Well done, Chris!
#13 - Chan Stevens Wotan's Spear image       8
3-Stage
Streamer: 120x12x0.001
(folded)
Event#1:
E9-0(x3); C6-0 (x3); E9-8
Rod (0)
Event#2:
E9-0(x3); C6-0 (x3); E9-8
Rod (0)
Event#3:
A10-0; A10-0; MMaxx-1
Rod (0)
Event#4:
E9-0(x3); C6-0 (x3); E9-8
Rod (0)
image
Chan is another old pro who has participanted in very VC that EMRR has had. He won VC#2, took third in VC#3 and then dropped out of the top 5 for VC#4 and VC#5. Welcome back to the top 5!
#12 - Bruce Levison Space Needle image       7
3-Stage
Streamer: 90x12x0.001
(not folded)
Event#1:
E9-0; E9-0; C6-7
Rod (.25)
Event#2:
E9-0; E9-0; C6-7
Rod (.25)
Event#3:
A10-0; MMaxx-1
Rod (-15)
Event#4:
A10-0; A10-0; A10-3
Rod (-12.5)
image
Bruce IS an old pro. He has been in EVERY VC that EMRR has held. I regret not being able to display these hugh rockets in 3D, because even for this one Bruce used decals. Bruce consistently performed in the upper 3rd of the group.
#1 - Todd Mullin Thin Man image     0.9 6
3-Stage
Streamer: 60x12x0.001
(not folded)
Event#1:
E9-0; E9-0; E9-8
Rod (0)
Event#2:
E9-0; E9-0; E9-8
Rod (0)
Event#3:
A10-0; A10-0; MMaxx-1
Rod (-15)
Event#4:
E9-0; E9-0; E9-8
Rod (-10)
image
Todd's was the first entry and until Bob Cox got his entry in, Todd was top dog! He won Event#1, did well in Event #2, and then kind of dropped from there. Todd will be holding the "Mullin Invitational" for VC#7.
#10 - Jeff Caldwell Mother Night image   0.5   15
2-Stage
Streamer: 120x6x0.001
(not folded)
Event#1:
E9-0+C6-0(x3); E9-8
Rod (0)
Event#2:
E9-0+C6-0(x3); E9-8
Rod (0)
Event#3:
A10-0; A8-3
Rod (-10)
Event#4:
E9-0+C6-0(x3); E9-8
Rod (-15)
image
This was Jeff's second contest. After placing 3rd, he learned "Longnecks" are not like throwing a football! Interestingly, he was in 15th place for events #1, #2, and #3 and then pulled off 1st place in the Drag Race. This moved him way up!
#11 - Jim Myers Pale Ale image       3
2-Stage
Streamer: 120x12x0.002
(folded)
Event#1:
D12-0; E9-8
Rod (1)
Event#2:
D12-0; E9-8
Rod (1)
Event#3:
A10-0; 1/4A3-2
Rod (-5)
Event#4:
D12-0; E9-8
Rod (-13.25)
image
Jim is becoming one of the old pro's. This being his 4th contest. He improved his position each event, even placing 2nd in the Low and Slow. He improved all the way up to 3rd place... until the Drag Race.
#14 - Joe Policy Night Sky image 2.0     11
2-Stage
Streamer: 60x12x0.001
(folded)
Event#1:
E9-0; E9-8
Rod (1)
Event#2:
E9-0; E9-8
Rod (1)
Event#3:
A10-0; 1/4A3-2
Rod (-15)
Event#4:
E9-0; E9-8
Rod (-15)
image
Forget how Joe's rocket performed in the contest! Click on his build bonus and see the real thing! Very nice. I wish more would build their designs.
#8 - John Bonnett The Noodle image   1.6 0.2 10
2-Stage
Streamer: 72x12x0.002
(folded)
Event#1:
E9-0(x3); E9-8
Rod (0)
Event#2:
E9-0(x3); E9-8
Rod (0)
Event#3:
B6-0; 1/4A3-2
Rod (0)
Event#4:
E9-0(x3); E9-8
Rod (0)
image
John too is a newbie. I like the booster. John found a bug in the component database - he selected fins are "G10 (PML 0.062"")" and set them to 0.125 and guesss what, their mass is 0.000 oz.!
#4 - Bill Cooke Cuello Largo image   1.6 0.6 13
2-Stage
Streamer: 40x4x0.001
(folded)
Event#1:
C6-0; C6-5
Rod(0)
Event#2:
C6-0; C6-5
Rod (0)
Event#3:
1/2A6-2
Rod (0)
Event#4:
C6-5
Rod (-2)
image
Bill is another newbie and again I have to say, his rocket design looks clean and very buildable. Bill was a middle of the pack performer and we look forward to his next contest.
#19 - Clive Davis Skinny Minnie image       9
3-Stage
Streamer: 100x10x0.001
(folded)
Event#1:
E9-0; E9-0; E9-8
Rod (0)
Event#2:
E9-0; E9-0; E9-8
Rod (0)
Event#3:
C11-5
Rod (0)
Event#4:
D12-7
Rod (0)
image
Clive staying up until nearly midnight just to sneak this design in. He was, no doubt, feeling pretty good after event #1 and #2 which placed him 3rd. Then where was he going in Low and Slow? Seemed to have missed a little rule that would have helped him greatly. Clive should have known since, he too has been in every VC contest.
#16 - Jeff Henry Broken Arrow
RockSIM Demo Entry
image   1.6   12
3-Stage
Streamer: 80x8x0.001
(folded)
Event#1:
C6-0; C6-0; C6-7
Rod (0)
Event#2:
C6-0; C6-0; C6-7
Rod (0)
Event#3:
A8-3
Rod (-15)
Event#4:
C6-7
Rod (15)
image
Jeff also took on the field using the "Demo" version. He says he loved participating and learned a lot about RockSIM... we agree and look forward to his return for VC#7.
#2 - R.S. Barker Miss Understood image   1.6 0.8 14
1-Stage
Streamer: 72x8.5x0.002
(folded)
Event#1:
E9-6
Rod (0)
Event#2:
E9-6
Rod (0)
Event#3:
B4-2
Rod (0)
Event#4:
E9-6
Rod (0)
image
R.S. is our first newbie entry. In general, he produced a nice looking rocket. He should have built it. R.S.'s best event was Low and Slow. His near-the-top performance placed him 3rd in the event. Adding his bonus points to just this event pushed him to 1st.
#5 - Layne Rossi Five in the Sky image   1.6 0.5 18
1-Stage
Streamer: 78.7x5.4x0.003
(folded)
Event#1:
A10-0(x4)+E9-6
Rod (0)
Event#2:
A10-0(x4)+E9-4
Rod (0)
Event#3:
A10-0(x2)+A10-3
Rod (0)
Event#4:
A10-0(x2)+E9-4
Rod (4)
image
This was Layne's first event and he really got into the fin design didn't he? Nice. Layne struggled in events #1 and #2, but did not do too bad in event #3 and #4. With some more practice... watch out!
#7 - Lance Alligood Stealth Barb
RockSIM Demo Entry
image   1.6 0.3 16
1-Stage
Streamer: 90x9x0.001
(not folded)
Event#1:
C6-7
Rod (0)
Event#2:
C6-7
Rod (0)
Event#3:
1/2A3-2
Rod (-15)
Event#4:
C6-7
Rod (0)
image
Lance was our first "Demo" entry. You have to appreciate the courage of those that enter with a "Demo" version since they can't save thier files. Once I build them up one in version 5, they can test and fine tune, but it is not easy. I should probably give them bonuses.
#9 - Bob Theobald Redneck Rampage image   0.5 0.1 17
1-Stage
Streamer: 29.1x2.9x0.002
(folded)
Event#1:
E9-8
Rod (0)
Event#2:
E9-8
Rod (0)
Event#3:
A8-3
Rod (-15)
Event#4:
D12-7
Rod (-3)
image
Welcome back Bob! This is only your second contest, with the first being the very first VC. With all that time off, we realize you are just getting warmed up!
#15 - Eric Maglio Black Widow
RockSIM Demo Entry
image   1.6   19
1-Stage
Streamer: 34.5x3.6x0.001
(folded)
Event#1:
E9-6
Rod (0)
Event#2:
E9-6
Rod (0)
Event#3:
D12-5
Rod (-5)
Event#4:
D12-7
Rod (0)
image
Eric's first contest and with the "Demo" version. Glad he competed and I like the reverse-swept fins. Eric, study the designs and come back and show them all what kind of student you are!

Altitude: Go as high as you can, but do it with style. The score for this event will be based on a combined ranking from each of these categories.
1a) Max Altitude (Hint: High impulse engines in short light designs do well here.)
1b) Adjusted Altitude = Max Altitude * (L/D) / 30 (Hint: High impulse engines help here too. Adding length hurts the altitude, but the (L/D) factor goes up faster than the altitude goes down, so there's incentive to stretch longer.)
1c) Altitude Efficiency = Max Altitude / Total Impulse (Hint: Here's where the tiny engines kick butt on the big boys.)

EMRR Comments: Wow, Bob Cox, beat the next closest by over 300 feet! But, check out Bill Cook with two little ol' C6's, had the greatest Feet/N. Dave Austerberry's was the only single-stage rocket to get into the top 10. Newbie, Chris Coffin, had consistent and impressive results. With his bonuses, he was able to get into 3nd place. In the end though, it was Todd Mullin with his 117:1 Length to Diameter ratio rocket that was able to pull off the win in Event #1.

Update: After all that, a problem was pointed out to me on Clive Davis' entry. It appears that some of these designs must run in Barrowman Sim verses Rocksim Sim. Clive's is one of them and Chris Coffin's is the other. Then there is Layne Rossi, John Bonnett, Jim Myers, Joe Policy and Bob Cox who's design can only run in RockSIM mode due to design features. Lastly, there is Claude Paquin that if run in Barrowman Sim has stability problems. All the rest, whether you run them in Barrowman or Rocksim sim get about the same results.

ID Rocketeer S
T
A
G
E
S
Max Alt R
A
N
K
L/D Adjust Max Alt R
A
N
K
Impluse Ft/N R
A
N
K
Total P
O
I
N
T
S
B
O
N
U
S
E
S
P
L
A
C
E
1 Todd Mullin 3 5777.23 17 117.09 22547.57 19 89.85 64.30 13 49 19 0.9 1
2 R.S. Barker 1 1070.20 3 58.42 2083.94 4 29.95 35.73 4 11 2 2.4 18
3 Claude Paquin 2 4771.95 13 30.07 4782.35 11 147.35 32.39 2 26 7 0.7 13
4 Bill Cooke 2 1969.53 6 35.80 2350.23 5 17.00 115.85 19 30 12 2.2 6
5 Layne Rossi 1 960.39 2 33.04 1057.77 1 38.15 25.17 1 4 1 2.1 19
6 Chris Coffin 3 5309.13 15 38.42 6799.24 13 89.85 59.09 10 38 15 2.0 3
7 Lance Alligood 1 849.10 1 51.22 1449.78 2 8.50 99.89 18 21 4 1.9 16
8 John Bonnett 2 3939.50 12 31.28 4107.72 9 119.80 32.88 3 24 5 1.8 14
9 Bob Theobald 1 2189.64 7 41.62 3038.05 6 29.95 73.11 15 28 9 0.6 10
10 Jeff Caldwell 2 3523.87 11 31.87 3742.98 8 85.4 41.26 6 25 6 0.5 15
11 Jim Myers 2 2896.04 9 35.96 3471.69 7 45.74 63.32 12 28 9 0.0 12
12 Bruce Levison 3 5071.08 14 93.75 15847.13 17 68.40 74.14 16 47 16 0.0 4
13 Chan Stevens 3 5329.40 16 87.93 15620.25 16 145.30 36.68 5 37 13 0.0 8
14 Joe Policy 2 3371.66 10 36.75 4130.28 10 59.90 56.29 8 28 9 2.0 9
15 Eric Maglio 1 1673.44 5 31.25 1743.03 3 29.95 55.87 7 15 3 1.6 17
16 Jeff Henry 3 1445.56 4 149.91 7223.54 14 25.50 56.69 9 27 8 1.6 10
17 Bob Cox 3 6313.14 19 105.86 22277.91 18 106.25 59.42 11 48 18 0.0 2
18 Dave Austerberry 1 2450.27 8 68.25 5574.62 12 29.95 81.81 17 37 13 0.5 7
19 Clive Davis 3 6004.87 18 43.29 8665.03 15 89.85 66.83 14 47 16 0.0 4

Streamer Duration: Score = Hang Time (sec) + (L/D). (Hint: This one encourages longer skinnier rockets and larger streamers. Adding length hurts the altitude, but the (L/D) term can counteract that. Large streamers can help the hang time but the extra weight will hurt in the other events, so trade off carefully.)

EMRR Comments: Well, Claude Paquin, we don't know if you could ever pack a 600" x 12" streamer in to a 0.976 tube in "real" life, but in the virtual world you passed. You also found a bug in RockSIM calculated weight, because the 500 square foot x 0.001" thick, "1.3 oz. Ripstop Nylon (SkyAngle)" streamer only weighed 0.103 ounces. Not likely, but not your fault. A bug in the system. BTW, you weren't the only one that happened upon that bug; Jeff Henry and Dave Austerberry did also. * Interesting to note how many people used the default streamer chosen for them by RockSim. As well as those that didn't choose to "Fold" their streamers.

ID Rocketeer S
T
A
G
E
S
Streamer
(F)=Folded
Hang Time L/D Score P
O
I
N
T
S
B
O
N
U
S
E
S
P
L
A
C
E
1 Todd Mullin 3 60x12x.001 346.16 117.09 463.25 14 0.9 7
2 R.S. Barker 1 72x8.5x.002 (F) 82.65 58.42 141.07 4 2.4 15
3 Claude Paquin 2 600x12x.001 (F) 1,544.75 30.07 1574.81 19 0.7 1
4 Bill Cooke 2 40x4x.001 (F) 173.03 35.80 208.82 7 2.2 12
5 Layne Rossi 1 78.7x5.4x.001 (F) 51.34 33.04 84.38 1 2.1 19
6 Chris Coffin 3 72x12x.001 418.60 38.42 457.02 13 2.0 5
7 Lance Alligood 1 90x9x.001 66.18 51.22 117.40 3 1.9 17
8 John Bonnett 2 72x12x.002 (F) 316.51 31.28 347.79 10 1.8 10
9 Bob Theobald 1 29.1x2.9x.002 (F) 104.37 41.62 145.99 5 0.6 16
10 Jeff Caldwell 2 120x6x.001 171.94 31.87 203.81 6 0.5 14
11 Jim Myers 2 120x12x.002 (F) 411.57 35.96 447.54 12 0.0 9
12 Bruce Levison 3 90x12x.001 424.26 93.75 518.01 15 0.0 5
13 Chan Stevens 3 120x12x.001 (F) 872.91 87.93 960.84 17 0.0 3
14 Joe Policy 2 60x12x.001 (F) 382.33 36.75 419.08 11 2.0 8
15 Eric Maglio 1 34.5x3.6x.001 (F) 79.27 31.25 110.52 2 1.6 18
16 Jeff Henry 3 80x8x.001 (F) 165.88 149.91 315.79 9 1.6 11
17 Bob Cox 3 180x12x.001 (F) 1,138.43 105.86 1244.29 18 0.0 2
18 Dave Austerberry 1 22.1x2.2x.001 (F) 230.56 68.25 298.81 8 0.5 13
19 Clive Davis 3 100x10x.001 (F) 829.26 43.29 872.55 16 0.0 4

Low and Slow: The score for this event will be based on a combined ranking from each of these categories.
3a) Lowest apogee
3b) Slowest max speed
DQ Condition: The bottom stage must clear the tower, and the upper stage must reach at least 50 feet altitude to qualify. (Hint: This event is mostly about engine selection.)

EMRR Comments: This was an interesting event. Five rocketeers with multiple stages, flew less stages during this event. Did this help them? Sure it did, however, it was Dave Austerberry's single-stage rocket that just popped over the 50 foot mark. He was a bit too fast in doing it because it was the 3-stager of Bob Cox that turned in the slowest velocity while flown in the 3-stage configuration. Bob's altitude was 2nd lowest so with his velocity he technically won the event. But by applying the bonuses to this event, then , R.S. Barker won it. Jim Myers, R.S. Barker and Chris Coffin turned in nice performances, which really only leaves one question: Where were you going Clive Davis and Eric Maglio? Maybe you missed this rule: "Motors may the same size or smaller than their motor tube size."

ID Rocketeer S
T
A
G
E
S
FLOWN
AS...
Apogee R
A
N
K
Velocity R
A
N
K
Total P
O
I
N
T
S
B
O
N
U
S
E
S
P
L
A
C
E
1 Todd Mullin 3 3 267.72 3 121.28 3 6 3 0.9 17
2 R.S. Barker 1 1 55.13 15 44.61 17 32 17 2.4 1
3 Claude Paquin 2 2 71.83 11 49.40 15 26 12 0.7 9
4 Bill Cooke 2 1 108.92 8 85.72 5 13 5 2.2 13
5 Layne Rossi 1 1 65.80 12 50.03 14 26 12 2.1 7
6 Chris Coffin 3 1 52.39 17 55.44 13 30 14 2.0 5
7 Lance Alligood 1 1 59.99 13 59.97 11 24 11 1.9 8
8 John Bonnett 2 2 57.59 14 45.24 16 30 14 1.8 6
9 Bob Theobald 1 1 140.08 5 100.98 4 9 4 0.6 16
10 Jeff Caldwell 2 2 74.50 10 62.67 10 20 10 0.5 10
11 Jim Myers 2 2 53.62 16 35.78 18 34 18 0.0 3
12 Bruce Levison 3 2 137.89 6 71.73 7 13 5 0.0 14
13 Chan Stevens 3 3 149.16 4 70.00 9 13 5 0.0 14
14 Joe Policy 2 2 114.76 7 71.28 8 15 8 2.0 11
15 Eric Maglio 1 1 931.72 1 318.70 1 2 1 1.6 18
16 Jeff Henry 3 1 82.41 9 73.16 6 15 8 1.6 12
17 Bob Cox 3 3 51.53 18 33.29 19 37 19 0.0 2
18 Dave Austerberry 1 1 50.38 19 57.31 12 31 16 0.5 4
19 Clive Davis 3 1 818.67 2 278.56 2 4 2 0.0 19

Drag Race: The score for this event will be based on a combined ranking from each of these categories.
4a) Fastest time to clear the tower
4b) Longest time to landing
4c) Closest landing to pad

EMRR Comments: Bob Cox is the fasted out of the tower = 0.150 seconds...but he didn't win the event. Claude Paquin has the longest time in the air = 1401 seconds...but he didn't win the event. Bruce Levison was closet to pad = 0.398 feet...but he didn't win the event. Newbie, Jeff Caldwell, will be recorded as the winner of the Drag Race!!!! I'm out of time, so the final update will have to be tomorrow AM!

ID Rocketeer S
T
A
G
E
S
Time
Clear
Tower
R
A
N
K
Time
to
Land
R
A
N
K
Range R
A
N
K
Total P
O
I
N
T
S
B
O
N
U
S
E
S
P
L
A
C
E
1 Todd Mullin 3 0.290 3 293.606 14 778.435 12 29 9 0.9 11
2 R.S. Barker 1 0.286 6 82.042 7 939.545 10 23 4 2.4 15
3 Claude Paquin 2 0.189 18 1401.069 19 18255.358 1 38 18 0.7 2
4 Bill Cooke 2 0.205 15 114.276 8 1454.566 9 32 13 2.2 5
5 Layne Rossi 1 0.205 15 51.445 4 671.251 13 32 13 2.1 6
6 Chris Coffin 3 0.287 4 149.920 9 545.584 15 28 7 2.0 12
7 Lance Alligood 1 0.233 12 65.936 5 779.816 11 28 7 1.9 13
8 John Bonnett 2 0.236 11 314.466 16 3988.126 3 30 10 1.8 9
9 Bob Theobald 1 0.277 7 67.400 6 657.420 14 27 5 0.6 16
10 Jeff Caldwell 2 0.225 14 150.547 10 122.146 18 42 19 0.5 1
11 Jim Myers 2 0.361 1 354.421 17 3370.860 4 22 2 0.0 18
12 Bruce Levison 3 0.238 10 44.307 2 0.398 19 31 11 0.0 10
13 Chan Stevens 3 0.231 13 866.854 18 11802.221 2 33 15 0.0 7
14 Joe Policy 2 0.264 9 312.175 15 2283.833 7 31 11 2.0 8
15 Eric Maglio 1 0.307 2 26.911 1 192.724 17 20 1 1.6 17
16 Jeff Henry 3 0.269 8 50.622 3 269.013 16 27 5 1.6 14
17 Bob Cox 3 0.150 19 225.919 12 2532.603 6 37 17 0.0 3
18 Dave Austerberry 1 0.195 17 207.796 11 1803.649 8 36 16 0.5 4
19 Clive Davis 3 0.287 4 228.737 13 3145.338 5 22 2 0.0 18

QA

  • If we submit a design and it doesn't qualify for some reason, are we allowed to rework the design and resubmit or even submit a new design?
    • Yes, either, both...we will review them and let you know.
  • How are Contest Points scored?
    • Each of the first 3 events have a "placement score" described. That placement score will then be reversed ranked by the total number of entries. This will give the maximum number of points to the winner in the event. For example, if there are (4) entries and in contest #2 (maximum altitude) and entry #1 gets 800 feet, #2 810 feet, #3 750 feet and #4 950 feet. Then the scores will be 2 points for #3, 3 points for #1, 1 point for #2 and 4 points for #4.
  • You say materials must be those listed in RockSim ... can I build/design any part using those materials?
    • Yes, you may, except the body tubes which must come from the database. Other parts: this does not imply that you have to take the part from the database.
  • Aren't the RockSim 5 and 6 users going to be upset about not being able to use the RockSim 7 variations? How about using the other software?
    • The point here is that everyone can compete. Their submissions will be converted to RS 7 for the competitions. They will miss out on some testing and the asymmetrical fin capability, but like in life, some compete with better training facilities than others... doesn't mean better facilities make for winners.
  • I've downloaded the virtual6.eng file. How do I get RockSim to ONLY use those motors and ignore the other motors or other .eng files?
    • Put the ENG file in the DATA directory for RockSIM
    • Run Compile Engine program
    • Select only virtual#.eng and ---> move it over
    • Click Compile
    • Start RockSIM
  • Drag coefficient: Should we use the default Cd (0.75 for sustainer, 0.78 and 0.80 for boosters), or should we calculate Cd at simulation time?
    • Calculate at Simulation Time. Also, it will be set to "Use the Rocksim Simulation equation in simulations".
  • There must be at least 2 sets of 3 - 8 fins". Does that mean 'per stage'? If my design is a two-stage (i.e. booster and sustainer), and each has a set of fins, does that satisify the design criteria?
    • Yes
  • I didn’t see anything about dual deployment (i.e. drogue chute and main chute). Is that allowed?
    • No, you must use the "Deploy at engine ejection" option
RockSim

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