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Search: Posts Made By: PDR1
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Forum: Rotorheads
26th Apr 2017, 08:23
Replies: 220
Views: 99,704
Posted By PDR1

The whole "retractable forward lift motors" thing...

The whole "retractable forward lift motors" thing seems to be a feature of this "flight test model" only. The other concept picture show a large and blown foreplane, so I'm confused. Are they saying...
Forum: Rotorheads
26th Apr 2017, 07:26
Replies: 220
Views: 99,704
Posted By PDR1

Indeed - that was one of the many as-yet...

Indeed - that was one of the many as-yet un-answered questions asked in the preceding pages.

PDR
Forum: Rotorheads
26th Apr 2017, 07:25
Replies: 220
Views: 99,704
Posted By PDR1

But if it is an air vehicle of significant size...

But if it is an air vehicle of significant size and mass (larger than the germa large RC model rules would cover) it would still require the airfield and surrounding area to be notam'd - it should be...
Forum: Rotorheads
25th Apr 2017, 07:03
Replies: 220
Views: 99,704
Posted By PDR1

So in summary what we are seeing is a "scaled...

So in summary what we are seeing is a "scaled prototype" (ie not full size) weighing 25kg (not something with a 200kg payload or a 300 mile range).

So it's an RC model aeroplane, as we said. Its...
Forum: Rotorheads
24th Apr 2017, 22:52
Replies: 220
Views: 99,704
Posted By PDR1

Well you don't get all that innovation without...

Well you don't get all that innovation without some downsides...

PDR
Forum: Rotorheads
23rd Apr 2017, 16:25
Replies: 220
Views: 99,704
Posted By PDR1

Both Nigel Farrage and Boris Johnson said that we...

Both Nigel Farrage and Boris Johnson said that we would save paying £350m a week by leaving the EU. Both of them saying the same thing didn't make it any truer.

I'm not accusing anyone of...
Forum: Rotorheads
23rd Apr 2017, 08:44
Replies: 220
Views: 99,704
Posted By PDR1

"A Manager" - why no name? Despite the claims...

"A Manager" - why no name? Despite the claims that there are tens of people working ion this project you only ever see two or three. Hardly a hive of development activity.



Ah, but lying under...
Forum: Rotorheads
22nd Apr 2017, 13:59
Replies: 220
Views: 99,704
Posted By PDR1

And why no wheels? I know it's supposed to be a...

And why no wheels? I know it's supposed to be a VTOL aeroplane, but those silly little skids will make it a right pain to move around on the ground (like helis with skids).

Sorry, but no one...
Forum: Rotorheads
22nd Apr 2017, 07:33
Replies: 220
Views: 99,704
Posted By PDR1

Not without something in the video to scale it,...

Not without something in the video to scale it, no. The dynamics of the lift of were all wrong - something weighing over a ton wouldn't wobble in that way. Also I can't see how ~2000lbs or more of...
Forum: Rotorheads
21st Apr 2017, 17:38
Replies: 220
Views: 99,704
Posted By PDR1

So all this happened at an airfield in Germany? ...

So all this happened at an airfield in Germany?

If it is a full-size, remotely piloted version where are the certification papers and NOTAMs required for legally flying an untethered SUAV of that...
Forum: Rotorheads
20th Apr 2017, 21:42
Replies: 220
Views: 99,704
Posted By PDR1

Erm...that looked like an RC model at about...

Erm...that looked like an RC model at about 1/4-1/3 scale (compare its size to the taxiway it landed on, and look at the wobble when it first lifted off).

If so I'm not sure what it proved.

PDR
Forum: Rotorheads
18th Jun 2016, 07:28
Replies: 220
Views: 99,704
Posted By PDR1

I'd forgotten about this - apols!. I've just...

I'd forgotten about this - apols!. I've just looked it up and my memory was faulty. The aeroplane I was thinking of was the 1953 Larsen Speed Bird, which was based on a Taylorcraft BC-12:
...
Forum: Rotorheads
18th Jun 2016, 07:21
Replies: 220
Views: 99,704
Posted By PDR1

Or you could just fire up a number of the T/O...

Or you could just fire up a number of the T/O motors on that wing to bring it back into balance...

PDR
Forum: Rotorheads
16th May 2016, 16:22
Replies: 220
Views: 99,704
Posted By PDR1

As far as I can see the concept is trying to use...

As far as I can see the concept is trying to use the fuselage as a canard, but even assuming this works I struggle to see how a canard surface with a sub-unity aspect ratio could ever be even vaguely...
Forum: Rotorheads
16th May 2016, 07:03
Replies: 220
Views: 99,704
Posted By PDR1

No vertical surfaces? Is the directional...

No vertical surfaces? Is the directional stability synthetic as well?

Also canard is at the same height as the mainplane, so the inner 25% iof each semispan won't do anything useful.

From that...
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