News
December 2020

The QS3 Nighthawk, an airplane project that I did a lot of work on, made its successful first flight on December 29.

November 2020

Here are the first two links for my "Small Airplane Design Tutorials" on Youtube:

1. https://youtu.be/NzMGNiY47IY

2. https://youtu.be/6RTcCFIlm0k

In it, I explain the steps that I use to design an airplane, starting with the definition of the mission, a table which calculates the most important parameters and performance estimates and explanations of terms used in wing design.  More will follow, look for the links on my "Video" page.

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September 2020

The Flight Design F2 that I have been working on is now available as an LSA at the US dealership for demo flights with Tom Peghiny. Here is a note I received from him on his first impressions:

Hi Sonja,

I’ve been flying the F2 a lot since we got it flying in May. I’ve flown it nearly 2000 NM in the last three weeks and transitioned a few pilots into it and a lot of demos. I find it a very nice plane to fly and better than I had hoped. Efficient and stable, easy to land and can be a great product for our target customers. I know you had a lot to do with the development and it’s a tribute to your knowledge and experience.

 

The engine cooling system works very well with the 912iS. I’m very hopeful for the future.

  

Tom Peghiny

President, Flight Design USA

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