Doug Hunsaker's Blog (5)

MachUp Drone Design Software Goes Global

We are happy to announce that users from around the world can now access MachUp, the world's easiest drone design software.

Designers from any country (except those on the US sanctions list) may use the software for aerodynamic development of non-prohibited airframes. See the full software terms here.

When you're ready to start, log in…


Added by Doug Hunsaker on December 16, 2015 at 7:30am — No Comments

Short Course on Mission-Specific Aircraft Design

Hey guys,

Sam Weiss and I have put together a short, 30 minute course on designing aircraft for specific missions. Would you mind watching these three 10-minute videos and leaving some feedback? We're looking specifically for comments and suggestions of what areas within aircraft design are not well understood or are the most…


Added by Doug Hunsaker on October 7, 2015 at 7:30am — 10 Comments

How to avoid pitfalls when using taper and twist

Hey guys,

Just put together a quick video to show the effects of taper ratio and twist and how they interact. Turns out using rules of thumb in this area can be detrimental. I have used similar rules of thumb in the past, but thought it was high time to walk through some rigorous calculations to see what's best.

Hope it's…


Added by Doug Hunsaker on September 29, 2015 at 8:30pm — 7 Comments

Why sweep hurts endurance and what to do about it

Hey guys,

I just wrapped up a project that taught me a lot about the effects of sweep on flying wings. Turns out sweep can significantly increase drag and hurt endurance. Sweep isn't all bad, though. There are ways to make a flying wing stable if you do it right.

I put together this film to explain the physics of what's going on and how to get stability without sacrificing endurance.

Hope it's helpful.…


Added by Doug Hunsaker on September 24, 2015 at 2:00pm — 19 Comments

MachUp 2 with Aero Suite

MachUp 2

Hi guys - I just released MachUp 2. It's been a long time in the making, but I think it's turned out to be a very useful tool. Features include:

- Quick Geometry Input

- Control Surfaces

- Linear Aerodynamics

- Stability/Control/Damping Derivatives

- Pitch Trim

- Stall Onset

- Loading…


Added by Doug Hunsaker on August 5, 2015 at 9:00am — 12 Comments


Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Vertical Horizontal one, is here

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