JNUK
Well-Known Member
This is my most unconventional model to date. The model was inspired by an article on jetex.org about a model of so called coleopter.
Unfortunately, no Jetex or similar motors were available. So I decided to adapt the configuration for use of available conventional A-size motors.
Apart from the wing the main feature of the model is a placement of the motor. It sits above the model CG and its exhaust channelled through so called an augmentor tube made of aluminium foil I cut from a barbecue tray. Recovery is by a small mylar parachute packed into the motor tube above the motor.
(Note the diagram does not show the final version of the nose cone design as well as 8 air intake ports)
The following video illustrates the model design and the build process.
[YOUTUBE]GMfoeMh8T4s[/YOUTUBE]
The model's mass excluding the parachute and the motor is 40 grams. It is a bit heavier than I wanted it to be, but it should be OK for A10 motor.
Unfortunately, no Jetex or similar motors were available. So I decided to adapt the configuration for use of available conventional A-size motors.
Apart from the wing the main feature of the model is a placement of the motor. It sits above the model CG and its exhaust channelled through so called an augmentor tube made of aluminium foil I cut from a barbecue tray. Recovery is by a small mylar parachute packed into the motor tube above the motor.
(Note the diagram does not show the final version of the nose cone design as well as 8 air intake ports)
The following video illustrates the model design and the build process.
[YOUTUBE]GMfoeMh8T4s[/YOUTUBE]
The model's mass excluding the parachute and the motor is 40 grams. It is a bit heavier than I wanted it to be, but it should be OK for A10 motor.
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