[Speed indication]

Sorry but this is just wrong, you move 100 knots but the air particels are also moving towards you with 25 knots in our example, and 100 + 25 is 125.

You can test this when you are standing on the ground, your Airspeed will show 0 ground speed + the wind from ahead.

 

This is incorrect.

[Speed indication]

That would be "you're". Can I have the pedantic medal now? ;)

 

/duck

 

--

Murphy

 

You know, I went to lunch and wondered if I got the "you're" right. I log back in to correct it and what do you know, you did it for me!

 

Go Go Grammar police. Everybody loves ya (you)

[Speed indication]

To be utterly pedantic, at a speed of 10mph, not a rate ;)

 

Your killing me Smalls!

[Speed indication]

An even easier example. If a river is moving at 5 mph and you swim in that river at 5mph upsteam, you will cover no ground. If you swim in that same river downstream at 5mph, you will cover ground at a rate of 10mph.

[Speed indication]

Actually, Congo is correct in this exercise.

 

The easiest way I can explain this is I have flown a Cessna 150 at close to stall speed (48mph) and have had mopeds on the ground passing me. This is because I was up in winds aloft flying into a headwind of 25mph. That effectively reduced my ground speed to roughly 20 mph. Give or take. A tailwind/headwind is irrelevant to planes/helicopters flight path. The prop still pulls the same air through it and over the wings no matter what the speed of the air is. Its relative.

[For Apache pilots requiring optical correction?]

When I tried to join the service I was told 20/20 uncorrected. They had said that the g-load (fixed wing is what I was looking into) could distort the contact lens causing it to dislodge. At the time, LASIK and other procedures were still new in the field.

 

I have since had LASIK performed on both eyes and now have better than 20/20 vision. If only they could do something for all these damn floaters in my vision I would be a happy guy.

 

On a side note, I wasn't allowed into the service because at the age of 18 I had a Spontaneous pneumothorax. My lung collapsed. Instant disqualification from any branch.

 

I had talked to an F-16 pilot some time later who said there were indeed ways to get around the uncorrected vision thing but they were lengthy and a long shot.