1. Blackwell 1
Product Work Log
Name Cody J. Blackwell Date 04/18/2012
Product High-Power Rocket
Date/Time: Activity:Researched possible rocket Comment/Suggestions:
12/19/2011 prototypes on Mad Cow Rocketry, Best bet is piston system
14:36 – 14:51 Public Missiles Ltd. (PML), and according to project
Apogee Components Inc. websites facilitator and prior
experiences with ejection
charges
Commentary:Discovered stark
differences between recovery systems
(piston vs. conventional ejection
charge)
12/20/2011 Activity: Surveyed Mad Cow Rocketry Quantum tubing will be best
16:10 – 17:25 and PML for components (tubing, for this project due to
centering rings, shock cords, etc.) durability and resistance to
cracking or “zippering” (tears
Commentary: Both websites that look like zippers)
recommended by project facilitator;
Public Missiles can ship parts in less
time than Mad Cow Rocketry
12/24/2011 Activity:Ordered all parts for rocket PML site seemed user-
11:14 – 11:34 from PML friendly; I plan to deal with
PML again in the future
Commentary: Unable to contact Mr.
Sharrock due to the holiday; received
advice from former student as to
which site to use
01/22/2012 Activity:Researched optimum Major differences in price
17:45 – 18:00 reloadable engines (motors) between the two vendors;
will discuss with facilitator
Commentary: AeroTech and Cesaroni
seem to offer the best motors for my
particular design

2. Blackwell 2
01/23/2012 Activity: Discussed motor findings Mr. Sharrock strongly agreed
13:10 – 13:30 with Mr. Sharrock that the most expensive
motors (AeroTech) may not
Commentary: I am accustomed to necessarily be of the best
building AeroTech motor kits because quality; also emphasized that
we use them in Aeronautics Club I use a relatively low-impulse
motor for NAR Level I
Certification
01/30/2012 Activity: Returned with motor data Facilitator recommended
13:10 – 13:30 from AeroTech and Cesaroni Cesaroni H87 over AeroTech
H97J due to price,
Commentary:Comparisons narrowed availability, and simplicity of
motor choices down to AeroTech H97J Cesaroni motor casings
or Cesaroni H87
02/03/2012 Activity: Inventoried all parts and dry Decided it will be best to
18:25 – 19:43 fit bulkheads and centering rings; assemble most rocket
sanded centering rings and all components at home so as
cardboard tubing not to disturb anyone with
epoxy fumes and sawdust
Commentary: All parts shipped in
good condition, none missing
02/07/2012 Activity: Met with project facilitator Register for National
13:13 – 13:20 Association of Rocketry
Commentary: Informed Mr. Sharrock membership in order to do
of intent to purchase motor through Level I Certification; write list
Apogee Components Inc.; discussed of all parts I need from
and confirmed possibility of ordering Apogee
the motor through the club
02/13/2012 Activity: Ordered 29mm motor Reinforced PML’s reliability;
21: 15 – 22:00 retainer from PML Mr. Sharrock stressed I use a
motor retainer earlier in the
Commentary: Attempted to order day, showed me an example
similar part from Apogee Components on one of his rockets
Inc. but order could not be processed
(no reason given)

3. Blackwell 3
02/22/2012 Activity:Received motor retainer and Realized I was not supposed
17:09 – 18:13 began work on rocket to glue aft mount ring to tube
in order to place epoxy fillets
Commentary: Motor retainer fit on fin sections inside the
perfectly in rocket; assembled motor tube; planned to run epoxy
mount with retainer, spreading JB along the root chord (longest
Weld on retainer and aft mount ring; part) of all fins before
epoxied wider shock cord to motor installation
mount tube and prepped apparatus for
installation
02/26/2012 Activity:Continued work on rocket Must be absolutely sure to
18:20 – 19:40 use plastic fin guide when
Commentary: Glued motor mount into installing fins to prevent the
rocket; sanded edges of all three fins rocket from spinning
and prepared them for installation haphazardly during launch
03/02/2012 Activity:Brought rocket in for Mr. Comments/Suggestions:
7:45 – 8:15 Sharrock to check Facilitator suggested I
purchase 2-in. PVC pipe with
Commentary: Dry fit all three fins; caps for both ends and an eye
discussed with Mr. Sharrock a design hook to create an altimeter
flaw where I did not integrate an chamber in the nosecone
altimeter section
17:00 – 18:30 Activity: Continued work on rocket Comments/Suggestions:
None
Commentary: Installed fins with epoxy
fillets (rounded semi-dry glue with
corner of a gift card); repositioned fins
with guide when necessary
03/09/2012 Activity: Traveled to Macedonia ACE Comments/Suggestions:
16:15 – 16:35 Hardware to purchase half-foot of 2-in. Tubing appears to have
PVC with tubing cap correct dimensions to fit in
nose cone, but I think the cap
Commentary: Sales associate was very might be too wide (later
helpful, jokingly asking if I was confirmed)
making a pipe bomb (!); told of how he
made a potato cannon using the very
same type of pipe when he was in high
school

4. Blackwell 4
17:30 – 18:45 Activity: Continued to work on rocket Comments/Suggestions:
Mr. Sharrock recommended I
Commentary: Attached and glued visit Lowe’s Home
bottom shock cord to piston ring & Improvement to find some
bulkhead and glued bulkhead into kind of cap that will fit inside
piston tube; discussed design flaw due the tube
to the cap for altimeter tube
03/10/2012 Activity: Visited Lowe’s Home Internal caps will have to be
15:15 – 16:15 Improvement and ACE Hardware for reinforced with wood blocks
altimeter hardware components or something similar
Commentary: Found & purchased
internal caps for pipe at Lowe’s, eye
hook with lag bolt, washer, and nut at
ACE
03/15/2012 Activity: Updated project worklog Comments/Suggestions:
16:28 – 17:52 with all activities N/A
Commentary: Simultaneously
considered altimeter section design
options
18:00 – 18:15 Activity: Continued work on rocket Comments/Suggestions:
Considered dropping the
Commentary: Tied cone-to-ring rocket off my deck; decided
(upper) shock cord to piston ring, against it due to an
spread epoxy on leading end of shock approaching thunderstorm!
cord
03/18/2012 Activity:Continued work on rocket Comments/Suggestions:
14:55 – 15:42 Previous design poses major
Commentary: Focused on altimeter problems (separation of nose
tubing & nose cone design cone from shock cord, misuse
of nose cone’s shock cord
eyelets); considering a new
design that will eliminate
possibility of damaging the
altimeter

5. Blackwell 5
03/23/2012 Activity: Met with facilitator for last Comments/Suggestions:
13:15 – 13:30 time before launch None
Commentary: Discussed and agreed on
final altimeter design
03/27/2012 Activity:Sanded coupler tube and Comments/Suggestions:
7:35 – 7:55 prepared for final assembly None
Commentary:Had to use lower grit
sandpaper for altimeter section to fit
properly
03/28/2012 Activity: Completed rocket Comments/Suggestions:
20:20 – 22:30 This was not by any means
Commentary:Dry fit everything; an “easy” project. Making
sanded necessary parts & assembled sure everything fit together
altimeter section properly was the most time-
consuming activity.
03/29/2012 Activity: Called Mr. Jorge Blanco, Comments/Suggestions:
17:25 – 18:30 Southern Area Rocketry president Mr. Blanco suggested I bring
my NAR confirmation to the
Commentary: Described all parts of the launch in case my
rocket and discussed possible launch membership card did not
problems arrive in time. He also said
the launch would continue if
thunderstorms did not enter
the forecast.
03/31/2012 Activity:Drove to NAR’s GAMMA Comments/Suggestions:
6:15 – 22:30 chapter launch field in Lilly, GA; left The original plan was to
for Phoenix Missile Works (PMW) launch with Southern Area
field in Talladega, AL around 11:45 Rocketry in Lilly, GA, but we
EDT; arrived at PMW field at 16:15 arrived in the rain and
CDT departed two hours later for
Talladega. Using the NAR
Commentary: Successfully launched website, we found the
rocket at PMW field address listed for PMW to be
the treasurer’s home and
asked for directions from
Ashville, AL, firefighters &
Mr. Sharrock.
TOTAL TIME SPENT: 34 hours, 25 minutes