Chris,
That is VERY enlightening. I had just discovered I needed my elevator
in my turns once I have the ship banked. I think I am going to return
my rudder to my right stick. It will make flying it easier. And when
I fly the aileron ships I will move it to the left side.
Thanks again..
jay
On 7/31/06, [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>*
<[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:
Hi Jay,
I have been flying my Photon 1 in the IHLGF for 4 years. I have a
Watson tailgroup on it (Spyderfoam/FG) which is close to the type
the Photon II has. I use alot of rudder throw and use the rudder
for tight thermals, as well as using it for drag breaking and
stalling. You have to use the rudder in many ways, in order to
get down fast, especially close to the ground. Rudders may not
stall themselves but they DO STALL THE PLANE. You can go to the
Drela sites and read about how tail surfaces stall. Here are my
observation and use.
1) I use ALOT of rudder throw. My desire is to up end the wing
ASAP if I want to core a tight thermal.
2) I use Exponential on my Rudder, mainly to create the ability
to put in minor changes when first moving the stick, and major
throws on the extremes.
3) If I need to use it, especially at high altitudes, I have my
dual rates set up to be 40-50% fo my normal throws. I use this
when I need to fly smoothly high, as well as letting some others
fly the plane.
4) Rudders do stall. However, if you are experincing Rudder
stalls from level flight, then your CG is back to far. Basically,
you need to increase your glide speed slightly, as you are right
at the point where any drag slows the entire wing down and it
stalls. Be aware, that your slowest glidespeed may not be your
best L/D speed. Often you need to add down elevator to speed the
plane up then initiate the turn.
5) When flying rudder/Elevator, you do need to add up elevator in
your turns. You will find that once you initiate a bank, only the
elevator is required. The rudder is then only used to keep the
plane in the bank when required, and level when it attempts to
tuck in tighter in the turn.
6) I use rudder as a Spoiler/Brake all the time. There are 2
methods.
7) Method 1: If you oscillate your rudder fast, the plane does
not respond, BUT the rudder acts as drag and brakes the airplane.
It is like a swing/pendulum/harmonic thing. Try it when you are
close to the ground apparoaching for a catch. Basically a rudder
drag brake.
8) Method 2: If you move the rudders slowly, you can get a wings
oscillation set up. Big Throws make is so you can respond to
making the plane turn back fast. Doing this, you can essentially
induced a s-turn and after 3 turns, like right, left, right, the
wing tips will stall and you can getthe plane to drop 10 feet or so.
9) There are methods to do elevator stalls coming in. You pull
upp elevator up to a stall, let the nose drop, then pull up for a
stall, but just as it peaks give down to level the plane then pull
full up, which essentially mushes the wing in a flying level stall
and the plane drops vertically while still flying.
All these methods do require practice. Bill Watson often said
that for R/E ships 1 ft = 1 sec of flight time, so you can
basically gauge how high you need to be to make a time.
10) While most now do not do it, I like to fly a gyro on a poly
ship. I tune down the gyro so that the rudder does ge affected
when thermaling. Try to tune it down as low as possible as
required for the throw, but so it does not affect thermal turns.
11) My Rudders are fairly thick, and the LEs blunted. the Drella
sites will talk about airfoil deadband, as well as stalling.
12) As for the Rudder stick, are you right handed or left handed.
As a right handed person I have flown with R/E on the right
stick. This is like most.
I have been flying R/E HLGs for a very long time and basically
those who fly aileron ships never realize the handicaps R/E ships
have. Sometimes I ask a aileron flyer to try a R/E ship because
it does require a blend of R/E that shows a aileron pilot the need
to add more rudder in turns. I envy the aileron giys alot too,
they fly their planes well.
Good Luck,
Chris Adams
LSF 348 LvL 5 (#8)
-------- Original Message --------
Subject: [RCSE] Re: Rudder Stalls and turns.
From: "Jay Hunter" <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
Date: Mon, July 31, 2006 9:20 am
To: RCSE <[email protected] <mailto:[email protected]>>
Rudder stalls this is where I found the concept. In the building
instructions of the photon II there is mention of having too much
deflection, and having too much deflection may 'stall the rudder'.
http://www.netmeister.net/%7Ejerry/bldgp2.htm
<http://www.netmeister.net/%7Ejerry/bldgp2.htm>
Look in the cg section of the instructions.
The consensus seems to be:
1. No one has heard of a rudder stall
2. A rudder turn requires some banking other wise you will just
'slide'
3. Most people who use RES ships use the rudder on the right
stick, not the left stick as I am doing at the present.
Jay
On 7/28/06, *Jay Hunter* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
I am trying to figure out if my rudder turns are accurate. I
think I am experienceing rudder stalls with my photon, from
either too much deflection or from holding the deflection too
long.
In other word do I ever want the rudder to cause my plane to roll?
Can someone explain to me what a rudderstall is and how to
prevent it?
Should all rudder turns remain flat?
Also is a roll a rudder stall of sorts?
Thanks,
Jay
