Exocet MM38 - Rocketarium

The Exocet MM38 is a French-built sea-launched anti-ship missile This kit includes plastic tail cone with the cluster motor mount. The motors are tilted at an angle for exciting flights.

The rocket flies on two 18 mm motors ranging from B4 to D9, which are not included in the kit.
To build this rocket you'll need wood glue, a hobby knife, sandpaper, masking tape, primer, and paint for assembly. For launching, a launch system with a 5 mm launch rod, a launch controller, and rocket motors are required.

The kit comes complete with laser-cut plywood centering rings and fins, a special 3D-printed plastic nose cone, a 3D-printed tail cone with fins, and an 45 cm plastic parachute for safe descent back to Earth. Additionally, the kit features an Ejection Baffle System, eliminating the need for wadding and ensuring a safe and enjoyable launch experience.

This military-scale rocket stands 68,5 cm tall and comes with pre-marked body tubes to aid in assembly. Instructions are detailed and complete, in pure Rocketarium style. The body tubes are high quality Estes type (BT-60).

Features:

• 3D-printed nose cone for a real scale appearance
• 3D-printed tail cone with fins
• BT-60 based body tube
• Baffle parachute protection
• Laser-cut basswood fins
• Laser-cut basswood centering rings
• Plastic parachute included

Multi-motor, or "cluster"
A "cluster" is a group of two or more motors, which are all turned on at the same time. The total thrust is the sum of the thrusts of each motor. Therefore, a group of small engines can lift a heavy rocket without the need to buy a larger engine.
Let's do some math: 2 B4-4 engines are equivalent to a C8 engine, 2 x C6-5 are equal to an D12, 2 Klima D9-7 engines are equivalent to an E18. Not bad at all!
Selecting different engine types allows you to fly in small fields, or send the model out of sight in a larger space.

Some information on launching multi-engine models

To launch this rocket requires a launch pad and an electric launch controller, just like any other rocket model. But firing multiple motors at the same time is more difficult than firing a single motor. First, you need a launch controller with a battery that can supply a higher current than the usual 6 volt or 9 volt battery.
Then a 12 volt launch controller, such as the Aerotech Interlock Controller or the Estes PS II, is highly recommended, as you will be wiring three igniters in parallel. A parallel connection of three igniters requires three times the current of a single igniter. If the battery cannot supply enough current, only one motor may fire, and the rocket will follow an arcing trajectory that will almost certainly lead to a crash.

If you do not have a powerful battery or a suitable launch controller, you can use Tapematch and Stage Ignters, with just a low current starter, such as the Type A (red). Using this setup the ignition is perfect every time, even with the standard Estes launch controls. Read how to use the Tapematch and Stage Igniters on the respective product pages.

The launch pad

With a cluster of two 18 mm motors it is no longer possible to use a standard launch pad. The reason is simple: a cluster of two "C" motors is equal to an "D" motor, a cluster of two "D9" motors is equal to an "E" motor. With these motors a 5 mm launch rod is mandatory, so there is no reason not to use it with an equivalent cluster.