Thermy 4: Project Cancelled

Sorry for the lack of updates. Today I’d like to announce that the project “semiscale-soaring plane based on Thermy 4” is cancelled. With this project, I overstretched myself (again). The initial idea of a modified nose grew into a complete redesign of the fuselage… and the wings would benefit from some changes as well… I’m… Continue reading Thermy 4: Project Cancelled

Thermy 4: Planning the Nose

Based on the draft stringers the new frames for the cockpit come about.

Based on the design variations, I’m moving on to the actual planning and start to blueprint the nose. If possible, it is supposed to give the aircraft a semiscale appearance and that means I basically have to start from scratch. In order to create parts repetitively and precisely, the blueprinting is going to be computer-assisted.… Continue reading Thermy 4: Planning the Nose

Workshop: Building Boards for the Thermy 4

The finished building boards stored away under the table.

In order to build the Thermy 4 I will need building boards, which are in widespread use with model aircraft builders. They serve two purposes: First they are supposed to provide an absolutely even surface because most workbenches sag over time, which means one can’t build really straight wings or fuselages on top of them.… Continue reading Workshop: Building Boards for the Thermy 4

Thermy 4: Design Modifications

As already mentioned at the start of the construction report, I’d cast an intermediary eye on the Lentus Thermik by Multiplex. I especially like its semi-scale appearance, that gives it a similar look as modern soaring planes. Most notably the bulbous nose and the T-shaped tailplane are spectacular and provide a great silhouette during flight.

New Construction Report: Thermy 4

In March 2019 I happened onto an issue of the FMT, which included the first part of the diagrams for the Thermy 4. Right away, I knew: That’s what I’ve been looking for! The model incorporates everything what I’ve wished for: great wingspan (4 metres), take-off weight below 5 kilograms so it’s legal to fly… Continue reading New Construction Report: Thermy 4