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Search: Posts Made By: Genghis the Engineer
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Forum: Private Flying
15th Jul 2015, 20:03
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

I'll certainly not dispute that an S4 is a real...

I'll certainly not dispute that an S4 is a real microlight - but I don't see why that can't be flown routinely on a steep glide approach. I've not flown an S4, but for example that works fine for an...
Forum: Private Flying
14th Jul 2015, 13:50
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

Specifically, 1.3Vs is the slowest that the...

Specifically, 1.3Vs is the slowest that the regulations permit the manufacturer to use in defining the landing distance.

Most microlights use higher, as I said. For example, the Sky Ranger,...
Forum: Private Flying
14th Jul 2015, 10:34
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

I disagree completely with this statement. ...

I disagree completely with this statement.

Historically microlights were trained with power-off approach and landing as the norm, and offhand I'd say that 80% of my (guessing) 1200 or so...
Forum: Private Flying
7th Jul 2015, 12:09
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

Can't you do recreational VFR flying with PPL...

Can't you do recreational VFR flying with PPL privileges on your ICAO CPL?

Yes, I take your point about demonstrating gold standard flying - something that was certainly strongly emphasised on my...
Forum: Private Flying
7th Jul 2015, 10:24
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

In my opinion:- Lack of W&CG/Perf access:...

In my opinion:-

Lack of W&CG/Perf access: knowledge that you are a licenced pilot, and that 2-up with partial tanks from a known and fairly long runway, they're irrelevant anyhow.

No mixture...
Forum: Private Flying
7th Jul 2015, 07:18
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

Also a part 25 aeroplane like a 146 has a lot of...

Also a part 25 aeroplane like a 146 has a lot of inertia, and a high approach speed. The first creates windshear risk, and the second makes say 10kn speed increment a relatively small percentage...
Forum: Private Flying
6th Jul 2015, 23:22
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

I would be interested in knowing your...

I would be interested in knowing your authoritative source for this.

Aeroplane gust response is proportional to the square of airspeed (source, any good university textbook on flight mechanics). ...
Forum: Private Flying
6th Jul 2015, 14:19
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

MTOW_approach_speed x SQRT (actual_weight /...

MTOW_approach_speed x SQRT (actual_weight / MTOW).


So in this case, 63 x SQRT(0.8) = 56.3, which I rounded up to 57.


It's just an extension of L=W=½RhoV²SCl. So, as Cl is the same (and a...
Forum: Private Flying
6th Jul 2015, 13:08
Replies: 90
Views: 15,887
Posted By Genghis the Engineer

One really obvious point - check you haven't gone...

One really obvious point - check you haven't gone from a knots aeroplane to a mph aeroplane.

But if everything's still in knots, then yes, the correct approach speed for a -161 is 63kn, reducing...
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