On Thursday we wrapped up our Switchblade wind tunnel testing at the University of Washington in Seattle and are waiting for the final results. One thing that surprised us was that the body, or fuselage, of our 1/4 scale model contributed to the overall lift in an unusual way. Typically wings provide the lift for […]
The torsion bar front suspension has been assembled and integrated with the steering, brake and wheel for the front assembly. With some minor tweaks it will be ready for mounting in the ground test vehicle shortly. The weight of the torsion bar system was much higher than spec’d, so we will be testing for function […]
The wind tunnel model is almost complete! One of our team members Ron Birch is shown sanding down the white oak test model. Here is Ron starting to paint the model a very nice pearl color! After sanding and painting here is our pearl wind tunnel model. We received three sets of front torsion bar […]
Our wind tunnel model is coming along, with one of the aluminum wings shown above. This is a nearly finished surface, with an unfinished surface shown below. The wind tunnel model is being done as a triple check on the low-speed flight characteristics of the new box tail. The body of the wind tunnel model […]
The new front wheel spindle and hub were majorly completed, as were the rear hubs that allow us to use a variety of aftermarket wheels. The wing hinge assembly is narrowed down to two alternates, which are being reviewed for structural integrity, safety, and maintenance. We are trying to preserve the option to swing the […]
The radiator ducting and sizing was worked out this last week, along with the ordering of a V-4 engine. We will use this initial 1.7L engine to work out any harmonic problems on the ground prior to engaging in the extensive work of installation in the flying prototype. If we opt for the larger 1.9L […]
I mentioned our fabricating a steering box for the front of the vehicle. This is pictured below so you can see what it looks like. This is a prototype part, and as we move into production it will assume more of an appearance of a manufactured part. Our testing on the full-scale prototype will provide […]
We established more of the drive train, or the parts that make the vehicle drive on the ground. The one pictured below is a differential, which splits the power from the engine out to each rear wheel. Normal differentials for automobiles are quite heavy, as the vehicle is quite heavy. We have a different need, […]
This week so far we have assembled the rear wheel carriers, brakes and hub. The custom steering box is being fabricated to provide a strong steering mechanism for the single front wheel. Typical two wheel steering systems were inadequate for what we required, so we fabricated our own. When we get into full production, the […]
Work has continued on the front suspension, with the assembly shown here being VERY light – saving us nearly six pounds by using racing quality parts. This is the brake and wheel bearing assembled onto the spindle shown last week. So far we have shed six pounds without sacrificing anything on performance. We are having […]
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