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Forum: Tech Log

5th Aug 2018, 09:32

Replies: 330

The Windward Turn Theory

Views: 50,667

Posted By Derfred

Brercrow, 1. Given that you claim to respect...

Brercrow,

1. Given that you claim to respect Newton’s laws of motion, then you must agree that a calculation performed from the inertial frame of reference of the airmass, an aircraft with a...

Forum: Tech Log

4th Aug 2018, 12:39

Replies: 330

The Windward Turn Theory

Views: 50,667

Posted By Derfred

Vessbot has it. Brercrow, you did a VERY...

Vessbot has it.

Brercrow, you did a VERY rough spreadsheet with 10 degree increments (refer section 6 of his Post (http://www.dynamic-soaring-for-birds.co.uk/html/the_downwind_turn.html)), and...

Forum: Tech Log

2nd Aug 2018, 05:26

Replies: 330

The Windward Turn Theory

Views: 50,667

Posted By Derfred

I suspect the answer lies in your own narrative: ...

I suspect the answer lies in your own narrative:

A steep turn at 200 feet in that kind of wind doesn’t sound wise to me. Not because of the wind strength, and not because he was turning...

Forum: Tech Log

23rd Jul 2018, 15:07

Replies: 330

The Windward Turn Theory

Views: 50,667

Posted By Derfred

I always think the easiest way to explain the...

I always think the easiest way to explain the argument is to use an extreme example.

An aircraft doing 50 KIAS in a constant 5000 KT airmass conducts a rate 1 orbit. What happens to it, compared...

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