The length is ranging about 1.8m-2m long. Rope B) is made of two sub-segment and called middle rope.To absorb the force, rope A must use an elastic rope. It also maintain the hook in its place by creating a bit tension when positioning the model. During firing, the different length from (bottom side of rope B + rope C) – (rope A + top side of rope B + rope C) makes shock force. It is really important to use elastic rope for segment A). It is an elastic rope with length about 15-20cm long. Only segment A) and C) utilize elastic ropes where segment B) employs non-elastic rope. Let say that they are segment A), B) and C). You may want to watch how the catapult works by clicking the following videos, enjoy !ģ segments are utilized to use for the launcher. We printed the parts with PLA filament and all the videos made also use PLA filament and so far we do not see any degradation yet. If you would like the parts to be heat resistant from strong sunlight, you may want to print those with PETG filament or if possible with ABS/ASA filament. The launcher adapter can be used also with any other catapult launchers. If you have your own catapult launcher already, you may only print the adapter. With the adapter, it is now safe to launch the model.
OWLplane came up with the idea to use a launcher adapter for the model where it gets support from the fiber carbon spars which are the strongest parts. Not only can the catapult throw the model with 10x of model AUW force but also, it ensures that the force is not breaking the model due to its significant pull force. OWLplane offer a solution by utilizing a catapult launcher. Moreover, it limits the weight of the battery also, since we need to keep the ratio close to or above 1:1. If EDF jet is designed to fly faster, the designer needs to reduce exit nozzle diameter, as a result, it will reduce the thrust ratio more. Especially, EDF jet engine, usually it does have about one thrust ratio or less, proper and correct way of throwing the plane is challenging. If the thrust ratio is less than one, we have to put extra force into it. Throwing your models with a hand launch method, it is prone to human errors. STABILIZER AND CONTROL SURFACE ASSEMBLY.
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