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Vehicle Details
This page contains
the major parameters that have been either calculated or estimated, or
otherwise. As the design matures, these numbers will converge on their
final values. The current Master Design Document (.doc) is available for
scrutinization here
(although it's not far along yet). All design will be done using metric
units (MKS), however we've displayed the english equivalents for you die-hard
veterans. We've also started work on a 6-DOF
simulator written in Matlab to help us simulate the flight characteristics
of the rocket.
*Note: These parameters
are fairly old and rough, and the team effort is focused on getting a
hybrid engine to operate reliably. When the engine is characterized satisfactorily,
these numbers will be re-crunched for those values.
Ballistic Performance
| |
Parameter
|
English
|
Metric
|
| |
Apogee Altitude |
400,000 ft
|
122 km
|
| |
Maximum payload
weight |
10 lb
|
4.5 kg
|
| |
Burn time |
< 15 s
|
| |
Coast time
(up) |
~ 25 s
|
| |
Burnout speed |
7372 fps
|
2247 m/s
|
Masses
| |
Parameter
|
English
|
Metric
|
| |
Mass Ratio |
2.5
|
| |
Initial Mass |
1190 lbs
|
539 kg
|
| |
Final Mass |
476 lbs
|
216 kg
|
| |
Propellant
Mass |
714 lbs
|
324 kg
|
| |
Payload Mass |
10 lbs
|
4.5 kg
|
Airframe
| |
Parameter
|
English
|
Metric
|
| |
Overall height |
29 ft
|
8.8 m
|
| |
Diameter |
14 in
|
0.36 m
|
| |
Number of
fins |
4
|
| |
Main body
material |
Aluminum 6063
|
| |
Ballistic
coefficient |
7.7 psi
|
53 kPa
|
Hybrid Engine
| |
Parameter
|
English
|
Metric
|
| |
Average Thrust |
12,000 lbf
|
53.4 kN
|
| |
Total Impulse |
180,000 lbf s
|
801,000 Ns
|
| |
Specific Impulse |
280 s at launch
|
| |
Burn time |
15 s
|
| |
Propellant
mass |
714 lbs
|
324 kg
|
| |
Fuel mass
(HTPB) |
238 lbs
|
108 kg
|
| |
Oxidizer mass
(LOX) |
476 lbs
|
216 kg
|
Electronics
| |
Parameter
|
English
|
Metric
|
| |
Flight computer |
68HCxx or DSP56F803 based
|
| |
Flight data
collection: |
static atmospheric pressure
|
| |
|
atmospheric temperature
|
| |
|
accelleration
|
| |
In-flight
power source |
12 vdc Batteries
|
| |
Communication |
?
|
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