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Search: Posts Made By: JetPlaneFlyer
Forum: Aerodynamics Today, 11:11 PM
Replies: 29
Views: 3,299
Posted By JetPlaneFlyer
That (decreasing camber toward the tip) still...

That (decreasing camber toward the tip) still only works the normal way up.

You can use a sharp leading edge near the root and a more rounded leading edge near the tip to help prevent tip stall,...
Forum: Aerodynamics Today, 11:01 PM
Replies: 29
Views: 3,299
Posted By JetPlaneFlyer
That's all true, you can control them beyond a...

That's all true, you can control them beyond a stall. But they don't use any special 'tricks' to do it... just large control surfaces, lots of thrust and light wing loading.

Pretty much all 'full...
Forum: Aerodynamics Today, 10:07 PM
Replies: 29
Views: 3,299
Posted By JetPlaneFlyer
Washout can be seen on many WWI and earlier...

Washout can be seen on many WWI and earlier aircraft.

To be honest 3D planes don't really brake any 'rules'. They are just lighter, have better thrust/weight ratio and have much larger control...
Forum: Aerodynamics Today, 09:33 PM
Replies: 29
Views: 3,299
Posted By JetPlaneFlyer
It's called 'washout' and it's the oldest...

It's called 'washout' and it's the oldest aerodynamic trick in the book. Not so good for aerobatic planes that have to fly inverted though!
Forum: General Electric Discussions Today, 10:57 AM
Replies: 26
Views: 378
Posted By JetPlaneFlyer
Just placed an order with HK (UK warehouse) this...

Just placed an order with HK (UK warehouse) this morning:

One 50" span ARF airplane (Invictus pylon racer)
4 x servos
1 x motor
Some connectors
two Lipos
Order process took me maybe...
Forum: General Electric Discussions Yesterday, 07:56 PM
Replies: 7
Views: 131
Posted By JetPlaneFlyer
If you use decent equipment that's correctly...

If you use decent equipment that's correctly specified and installed then the chances of failure are very low. Personally i don't use such a system and i've yet to have any issues, so i'd have to say...
Forum: AMA District ll Clubs Yesterday, 07:45 PM
Replies: 21
Views: 194
Posted By JetPlaneFlyer
Luckily, for RC models, the trustly 'if it looks...

Luckily, for RC models, the trustly 'if it looks right it will fly right' rule works 99.9% of the time.
The tricky bit is knowing what 'looks right';)
Forum: General Electric Discussions Yesterday, 07:37 AM
Replies: 22
Views: 274
Posted By JetPlaneFlyer
I was looking for that video earlier. John sounds...

I was looking for that video earlier. John sounds like a fascinating guy and obviously really knows aerodynamics. I wish i could shoot the breeze with him sometime.
Forum: AMA District ll Clubs Yesterday, 07:24 AM
Replies: 21
Views: 194
Posted By JetPlaneFlyer
the problem isnt about static thrust (i.e. thrust...

the problem isnt about static thrust (i.e. thrust measured with the plane standing still) which is what is quoted, it's about the unit's ability to continue to make good thrust at very high speed.
...
Forum: AMA District ll Clubs Yesterday, 12:00 AM
Replies: 21
Views: 194
Posted By JetPlaneFlyer
I'd be interested in any reference to that? The...

I'd be interested in any reference to that? The highest verified level flight speed i found was a little over 200mph. I know higher one way speeds have been recorded but these have i think been...
Forum: General Electric Discussions 03-03-2015, 09:12 PM
Replies: 22
Views: 274
Posted By JetPlaneFlyer
The Caspian Sea was where the really big and...

The Caspian Sea was where the really big and famous Russian ground effect planes were flown (Akranoplans), for instance the famous 'Caspian Sea Monster':
V8Nu94khHoo
Forum: General Electric Discussions 03-03-2015, 07:47 PM
Replies: 22
Views: 274
Posted By JetPlaneFlyer
I've seen a few people do ground effect gliders...

I've seen a few people do ground effect gliders using the Lippisch reverse delta design, like this:
NvxzGERqDXI

Should be easy enough to make it a bit bigger and add RC and power. Seems that the...
Forum: AMA District ll Clubs 03-03-2015, 07:28 PM
Replies: 21
Views: 194
Posted By JetPlaneFlyer
Basically yes, they are used because they make a...

Basically yes, they are used because they make a jet model look like a jet and not have an ugly prop spoiling the 'jet look'. A ducted fan gets more efficient if you make them very large in diameter...
Forum: Off Topic Chit Chat 03-03-2015, 08:37 AM
Replies: 22
Views: 320
Posted By JetPlaneFlyer
I guess it's very simple: If price is the only...

I guess it's very simple: If price is the only driver, you look at the overall cost including shipping, and buy it at the cheapest place.

For me here in the UK the 'cheapest place' is usually...
Forum: AMA District ll Clubs 03-03-2015, 07:12 AM
Replies: 21
Views: 194
Posted By JetPlaneFlyer
EDF's generally are slower than planes of similar...

EDF's generally are slower than planes of similar power/design that are prop driven.

Your never going to get anywhere near mach 0.7 (530mph) the very fastest EDF today is a little over 200mph in...
Forum: General Electric Discussions 03-03-2015, 06:55 AM
Replies: 22
Views: 274
Posted By JetPlaneFlyer
It can be done but the problem for an RC model is...

It can be done but the problem for an RC model is where you would 'fly' it? It needs to be a very smooth surface, ground effect starts to work at about half a wingspan up, but for most effect the...
Forum: General Electric Discussions 03-02-2015, 11:12 PM
Replies: 26
Views: 378
Posted By JetPlaneFlyer
Not from China they dont;)

Not from China they dont;)
Forum: General Electric Discussions 03-02-2015, 07:15 PM
Replies: 26
Views: 378
Posted By JetPlaneFlyer
If you had LiPo batteries in an international...

If you had LiPo batteries in an international shipment then that makes it expensive because none of the cheaper couriers will carry batteries. That's not Hobbyking's fault, it's just a problem with...
Forum: Scratch and Kit Built Aircraft 03-01-2015, 12:34 PM
Replies: 63
Views: 1,580
Posted By JetPlaneFlyer
Brilliant minds think alike:D Or could it be...

Brilliant minds think alike:D

Or could it be 'fools seldom differ':roll:

I think it will make a difference, i guess we will find out soon. The other thing that I'd change if it were mine is...
Forum: Scratch and Kit Built Aircraft 03-01-2015, 10:13 AM
Replies: 63
Views: 1,580
Posted By JetPlaneFlyer
If it were mine for testing purposes i'd add a...

If it were mine for testing purposes i'd add a load of area to the horizontal stabiliser, maybe to the verticals to although they are probably ok as they are, but more area wont hurt for testing. ...
Forum: Off Topic Chit Chat 03-01-2015, 09:22 AM
Replies: 22
Views: 320
Posted By JetPlaneFlyer
+1 Shipping goes through the roof if Lipos are...

+1 Shipping goes through the roof if Lipos are included in international shipments. This isn't Hobbyking's fault, the low cost postal services wont carry batteries on international shipment so you...
Forum: General Electric Discussions 02-27-2015, 08:49 PM
Replies: 25
Views: 606
Posted By JetPlaneFlyer
That's a plausible explanation. It does seem very...

That's a plausible explanation. It does seem very hard to believe that anyone at tower could have been negligent enough to pack it in that state.

I thought that the courier usually put a note on...
Forum: Batteries & Chargers 02-27-2015, 08:40 AM
Replies: 9
Views: 206
Posted By JetPlaneFlyer
As long as you have at least one green light the...

As long as you have at least one green light the Tx will be working at full power. More voltage does not equal a stronger signal. The Tx has a voltage regulator inside which drops battery voltage...
Forum: General Electric Discussions 02-26-2015, 11:52 PM
Replies: 25
Views: 606
Posted By JetPlaneFlyer
Well in 60 orders from HK I've never seen...

Well in 60 orders from HK I've never seen anything even remotely that bad.

Putting right the mistake promptly is fine, but getting the order right first time is even better.
Of course to err is...
Forum: Batteries & Chargers 02-26-2015, 11:27 PM
Replies: 9
Views: 206
Posted By JetPlaneFlyer
All rechargeables are nominally 1.2V. They are...

All rechargeables are nominally 1.2V. They are higher when fully charged but soon come down to 1.3-1.2V when in use, but providing you don't pull a lot of current they hold 1.2 until they are pretty...
Forum: General Electric Discussions 02-26-2015, 09:52 PM
Replies: 25
Views: 606
Posted By JetPlaneFlyer
Shocking that they would send something like that...

Shocking that they would send something like that out... What are they thinking? It's obviously going to come back to them, no customer is about to accept a box of scraps.
Forum: Scratch and Kit Built Aircraft 02-26-2015, 10:35 AM
Replies: 39
Views: 1,075
Posted By JetPlaneFlyer
Great work, she flies really well.

Great work, she flies really well.
Forum: General Electric Discussions 02-26-2015, 09:26 AM
Replies: 4
Views: 3,860
Posted By JetPlaneFlyer
Well Diverdon could have been sitting around for...

Well Diverdon could have been sitting around for these last seven years just awaiting one more post to help him confirm his CG before flying his plane:rolleyes:

But seriously, I'm at a loss to...
Forum: General Electric Discussions 02-25-2015, 08:42 PM
Replies: 19
Views: 258
Posted By JetPlaneFlyer
XT60 for me too, up to about 60A. I don't like...

XT60 for me too, up to about 60A.
I don't like Deans, the curved thin 'spring' part gets bent and they are too small to get a decent grip of. When i first started electric power I damaged a new...
Forum: General Electric Discussions 02-25-2015, 08:48 AM
Replies: 14
Views: 291
Posted By JetPlaneFlyer
It would take a shed load of right thrust to make...

It would take a shed load of right thrust to make a plane turn right even when applying full left rudder.

On a plane like the Telemaster you should have around 3 degrees of right thrust, give or...
Showing results 1 to 30 of 500

 
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