George:

My almost unbelievable vocabulary is such that bibliographic reference is not required for the formation of an obfuscatory response.

On first thought your idea sounds like a real "Eureka" moment.

On second thought I remember reduced intake area equals reduced air flow equals reduced thrust and reduced engine cooling.

In other words, if you have enough thrust with the door open to take off, and 60% power, or however much you have with the door shut, is plenty for normal flight, go for it.

You might try it first with the nose gear door off, get everything trimmed, so forth, get used to the plane, and then try it with the door shut.

If it works, you're home free. But do listen for engine sag, or any other overheat signs. If there's a lack of power you wont have any trouble seeing that.

So overall, I think it's a great idea to play with.

Bill.