For this
launch we traveled to the Great Meadows, Virginia launch site, which
was operated by NOVAAR. This is the site of the National Flyoff and
the site we will use for qualification on March 31, April 1 or the
next weekend. It was a partly
cloudy day, cool, but very windy. The first six launched were
in wind around 15 mi/hr with gusts to 20 mi/hr. By1:30 pm the wind
had died down to about 10 mi/hr, and shifted almost 180 degrees. We
got three great shots off in the better weather conditions.
Objectives:
- Get some good altimeter scores for
TARC qualification.
- Initial flight of rear ejection
Big Daddy version 3 and Executioner version 2 (with film on fins).
- Testing of the NOVAAR launch site
launch rods.
- Fly composites (reloadable and
single use) to compare results.
Lessons:
- We had problems with the
wind, but were able to compensate to get straight launches. We
reconfirmed that the launch rods need to point with the wind at an
angle about equal to the wind speed (that is 15 mi/hr wind should
have a launch angle of 15 degrees).
- The biggest variable in altitude
appears to be the wind, especially wind gusts. The wind reduces
altitude, even in a launch rod angle compensated straight flight.
The wind knocks off about 10 feet for every mi/hr that hits the
rocket. On a windy day, we will need to step up the engine
size -- a lot of guess work and luck.
- The rear deployment worked well
three time in a row.
- The Ogive nose cone on the
Executioner version 2 may have been an important improvement.
- We could not get a composite single
use engine into the Fat Boy design version 2 rocket because the
engine tube had too much paint.
- There was no noticeable difference
between our launch rod and the NOVAAR supplied rod. But we need to
add a string to our launch clip for the composite motors.
- An egg broke on the last Fat Boy
design launch. We need to pack the egg better and make sure it
doesn't move around at all in the nose cone.
- We need to check around the cars
before we leave any site. And a travel check list would be
very helpful.
- We were not able to get accurate
duration times from the videos because the rockets landed so far
away. The wind carried some of the rockets well over a thousand feet
away. When recording the video, the operator should say
launch, ejection, and touchdown so the audio recording has duration
times. The operator should not use foul language.
- When putting a rocket together, we
need two people working it. One to hold and advise, and one to
put it together.
- The launch tower loading teams and
recovery teams did great.
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Launches
We had
nine launches with relatively good results. We flew real eggs
and an altimeter on six launches with one broken egg, and no damaged
altimeters. We downloaded altimeter data on only the last three
launches because Mr. Ekman left the computer back at Lockheed
Martin.
Flight |
Order |
Load |
Results |
Comment |
Rear Daddy V3
Flight 1 (Video)
Initial Flight |
1 |
E9-4, 330g (est.)
Wood egg, Altimeter weight,
2-12"
Chutes, Their tower 0d |
21sec,
500ft (est.) |
Serious wind cocking, one chute
tangled |
Rear Daddy V3
Flight 2 (Video) |
5 |
E15-4, 320g
Wood egg, Altimeter 2,
2-12"
Chutes, Our tower 15d |
37sec (video),
712ft |
Score: 146 - Straight flight,
chutes deployed nice |
Rear Daddy V3
Flight 3 (Video) |
8 |
E18-4, 325g
Egg, Altimeter 2,
2-12"
Chutes, Their tower 8d |
39sec,
819ft,
Altimeter Data |
Score: 37 - Straight flight,
chutes deployed nice |
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Fat Boy Design V2
Flight 1 (Video) |
2 |
E9-4, 270g
Egg, Altimeter B,
14"
Chute, Their tower 0d |
35sec (video),
693ft |
Score: 167 - Wind cocking,
otherwise nice flight |
Fat Boy Design V1
Flight 1 (Video)
(video incomplete) |
4 |
E9-8, 280g
Egg, Altimeter B,
15"
Chute, Their tower 15d |
38sec (video est.),
652ft |
Score: 205 - Nice straight
flight, but too low |
Fat Boy Design V1
Flight 2 (Video) |
9 |
E15-7, 270g
Egg, Altimeter B,
15"
Chute, Our tower 8d |
56sec,
924ft,
Altimeter Data |
Score: 85 - Egg cracked, nice
straight flight |
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Executioner V1
Flight 1 (Video) |
3 |
E15-4, 330g (est.)
Egg, Altimeter A,
18" X
Chute, Our tower 15d |
33sec (video),
643ft |
Score: 219 - Some wind cocking,
but too low, otherwise nice flight |
Executioner V2
Flight 1 (Video)
Initial Flight |
6 |
E9-6, 340g,
Wood egg, Altimeter weight,
18" X
Chute, Their tower 15d |
18sec (video),
500ft (est.) |
Straight flight, chute knotted |
Executioner V2
Flight 2 (Video) |
7 |
E18-4, 335g
Egg, Altimeter A,
18" X
Chute, Our tower 8d |
45sec,
860ft,
Altimeter Data |
Score: 10 - Straight, chute has
burn hole |
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