John Heddles
@john-heddles
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Joined: May 14, 2016
Last seen: Jun 12, 2026
Topics: 2 / Replies: 963
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Aircraft Trim Sheet loading

Looking at the 340B CG envelope [attachment=1287]340B CG.jpg[/attachment] we can see several sloping CG limit lines shown in the next graphic a...

8 years ago
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Aircraft Trim Sheet loading

[color=blue][i][b] Could you give a real life example of an aircraft with the sloping line which can't be made a straight line on the index graph[/b][...

8 years ago
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Question re fuel planning and holding at another destination

[color=blue][i][b]in the real world of GA how does one go about calculating the reserve fuel released for holding?[/b][/i][/color] Very cogent poin...

8 years ago
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Question re fuel planning and holding at another destination

[color=blue][i][b]Fly from A to B, due to B unusable how long after flying to C, can you hold there?[/b][/i][/color] It all depends on where you do...

8 years ago
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Fixed Reserve Fuel

Most of you wouldn't recall the following mishap [color=red Jim had a very strange idea about reserves and how they should be calculated on his own a...

8 years ago
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Question about flight fuel

Fuel is one of (a) flight (and diversion) fuel - ie what you expect you might use. Time to the alternate is irrelevant to the considerations (b) ...

8 years ago
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Avery

I think, perhaps, both you and other students will get better value out of this question if you include your solutions. That way, we can work through...

8 years ago
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Performance

My apologies - I misunderstood your first post to be referring to ISA deviations. Suggest you rework your calculations starting with pressure height...

8 years ago
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Performance

Quick question - can you check for a typo - is the summer deviation intended to be +17 ? Either way, the summer case is the more critical for perfo...

8 years ago
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Performance

I don't know of anyone who has put the equations into Excel but I have no doubt that some of the present Industry engineering consultants will have do...

8 years ago
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Va

It appears that the thread is doomed to a continual going around in circles. Suffice it to say - (a) Va is an engineering design limit and not r...

8 years ago
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Va

[color=blue][i][b]Does that mean that you *are* saying that Va decreasing with decreasing weight is not about protecting the wing spar? Which is what ...

8 years ago
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Va

I think you are getting to a straw man argument, here. Kershner was an acknowledged skillful pilot and instructor but he was not, so far as I am awa...

8 years ago
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Va

You really are getting to the point of being a little silly in your persistence with things not of much relevance to the discussion ... [b][color=b...

8 years ago
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Va

[color=blue][i][b]how is the force on the main spar increased? Hence, Va decreasing is not to do with protecting the wing.[/b][/i][/color] I make ...

8 years ago
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