High Powered Rocketry

Rocket Information you can USE!


Here is some stuff for high powered rocketry

Homemade Simple Relay Launch Controller

First, is the schematic for my simple relay launch controller. This is a modified design from information I found on the web a few years back. It works for me, but if you decide to build it you do so at your own risk. FYI - This design will probably not work well if you use e-matches for igniters. The current from the 9 volt continuity check may ignite them prematurely.

relay launch controller How Relay Launch Controller Works

NAR Level 2 Certification Test For Practice

Second is a simple online test I wrote that uses questions from the NAR test pool. These are from the 1999 test version. This is not the latest test version but it's close.

NAR Level 2 Practice Test

Reloadable Rocket Motors

Next, some info about rocket motor reloads. I can never remember what reloads go into what case. Except for the G64. So I use the table below quite a bit. Perhaps you may find this handy as well.

W - White Lightning White Lightning has a visible orange flame and lots of white smoke.
R - Redline Redline propellant has a bright red flame, and a little white smoke.
J - Blackjack Blackjack produces lots of black smoke and little, if any, visible flame.
T - Blue Thunder Blue Thunder has no smoke, a light purple-blue flame and a fast burn time.
N - Warp-9 Warp-9 exhibits a yellow-white exhaust plume with a minimum of smoke.
FJ - Fast Blackjack Fast Blackjack produces black smoke like a regular Blackjack, with burn characteristics similar to White Lightning.
G - Mojave Green Mojave Green exhibits a bright green flame, with a fast burn time.

Below is a table that outlines many Aerotech cases and the rocket motor reloads that fit into them.

CaseReloads for that case
29/60 F37W F62T    
29/100 G54W G104T    
29/120 G79W G77R    
29/180 G75J H128W H238T H165R  
29/240 H97J H180W H220T H210R H220G
29/360 I200W H268R    
CaseReloads for that case
38/120 G61WG67RG69N(?)G399N
38/240 H73JH123WH242T H148R H699N
38/360 H112J I161W I357T I218R H999NI245G
38/480 I154J I211W I300T I285R I225FJI1299N
38/600 I195J I284W I435T I366R I305FJ
38/720 J350W J420R I600RI364FJJ500G
38/1080 J570W J575FJJ825R
CaseReloads for that case
54/852 J90W J180TJ275W J460T J315R J250FJJ1299N
54/1280 J135W J415W J800T J540R J401FJJ1999N
54/1706 K185W K550WK1100T K695R K513FJ
54/2560 K700W K1275R K828FJK270W
CaseReloads for that case
75/2560 K560W K780R
75/3840 L850W L1150R
75/5120 L1120W L1420R M1297W
75/6400 M1315W M1550R M650W(?)
CaseReloads for that case
98/2560 K458W K650T K680R K1999N
98/5120 L952W L1500T L1300R
98/7680 M1419W M2400T M1600R
98/10240 M1939W M2500T M2000R M750W
98/15360 N2000W
98/18000 N4800T
You can find more data from on these engines at Here you can search for that data on their site. Search
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High Powered Rocketry