[NSRCA-discussion] Aurora review

Fri Oct 29 12:04:21 AKDT 2010

"Radio control equipment shall be of the open loop type (i.e. no electronic
feedback from the model to the ground)."

No Electronic feedback in my mind means No electronic feedback.  Telemetry
of any sort would be illegal; whether useful for flying the plane or not.
Recording in the plane, for review after the flight would not be illegal.

The DX8 has the ability to send back to the TX RX voltage, motor lipo
voltage, motor RPM, and temperature.  Alarms can be programmed for high and
low values on any of these parameters.  The range on the telemetry is pretty
limited - couple hundred feet, so it would be pretty hard to use it in a
useful manner during any sequence flying.  And, it is certainly easy to turn
off the telemetry, or leave the telemetry module out of the plane.

Regards,

Dave Lockhart

Team Horizon/JR/Spektrum

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Pascoe,Tim
[Burlington]
Sent: Friday, October 29, 2010 3:28 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Aurora review

I asked the last time this came up, and I'll ask again because it seems
clear to me, but I did not get the answer I was expecting. In my
interpretation, the statement 'Automatic control sequencing (preprogramming)
or automatic control timing devices are prohibited' implies to me that much
of the automated logic programming being done on the Futaba 12z and 14mz
(automated release of elevator in a snap due to rudder/throttle stick
positions, for example), would be illegal. Last time I asked for
clarification, I was told this is indeed permitted. It would also seem that
Section 8 below, Electronic or other signal or feedback from the model of
any kind means telemetry to the pilot during flight is also not permitted.

Tim Pascoe 

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Richard Lewis
Sent: Friday, October 29, 2010 3:20 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Aurora review

Slow Friday........the rulebook (Section 4.4) specifies "Open-Loop type"
controls and uses the verbage "Control Functions Not Permitted" in the
example section where electronic feedback is addressed....the DX8 clearly
does NOT close the loop on any feedback parameters and the feedback
telemetry is clearly NOT used as a control function in the flight control
system...

4.4: Equipment Functions. Radio control equipment shall be of the open loop
type (i.e. no electronic feedback from the model to the ground). Auto pilot
control utilizing inertia, light, gravity, or any other type of terrestrial
reference is prohibited. Automatic control sequencing (preprogramming) or
automatic control timing devices are prohibited. RCA-3 

Examples of control functions permitted: 

1) Control rate or control movement limit devices that are manually switched
by the pilot. 

2) Any type of button, dial switch, or lever control that is initiated and
terminated by the pilot. 

3) Manually operated switches to couple control functions. 

Examples of control functions not 

permitted: 

1) Snap buttons with automatic timing mode. 

2) Preprogramming devices to automatically perform a series of commands. 

3) Automatic leveling or stabilization in any axis (gyros, etc.). 

4) Propeller pitch change with automatic timing mode. 

5) Any type voice recognition system. 

6) Any type of learning function involving maneuver to maneuver or flight to
flight analysis. 

7) Model navigation or positioning systems (GPS, distance, or height
sensors, etc.). 

8) Electronic or other signal or feedback from the model of any kind. 

9) Engine management systems that coordinate power output with model
performance, position, or attitude. 

  _____  

From: Tim Taylor <timsautopro at yahoo.com>
To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Sent: Fri, October 29, 2010 1:58:56 PM
Subject: Re: [NSRCA-discussion] Aurora review

By the rule book the DX8 would be clearly illegal for pattern because of the
telemetry.  I doubt anyone would declare it so however.

Tim

--- On Fri, 10/29/10, Phil Spelt <chuenkan at comcast.net> wrote:

From: Phil Spelt <chuenkan at comcast.net>
Subject: Re: [NSRCA-discussion] Aurora review
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Date: Friday, October 29, 2010, 1:23 PM

Jerry,

If you don't need more than 8 channels, I'd recommend the new DX-8 -- has
telemetry back to the Tx for 4 data sources.  I have one.  The sticks re
really silky and the 11 ms frame rate is VERY fast... $430.00 for Tx, Rx and
telemetry module...

At 12:17 PM 10/29/2010, you wrote:

Jon, thanks for the input. I have decided to replace my old Stylus (1995
version) and have started checking around. Looks like 2.4 is the way to go.
Jerry

----- Original Message ----- 

From: Jon Lowe
<http://us.mc623.mail.yahoo.com/mc/compose?to=jonlowe@aol.com>  

To: nsrca-discussion at lists.nsrca.org
<http://us.mc623.mail.yahoo.com/mc/compose?to=nsrca-discussion@lists.nsrca.o
rg>  

Sent: Friday, October 29, 2010 9:35 AM

Subject: Re: [NSRCA-discussion] Aurora review

Jerry, 

I just had one and sold it.  Reasons:

No stick switches

No split expo on each side of neutral.  I use split expo, especially on
elevator.

Mine came with the infamous stick deadband on three axes and I ended up
sending it back twice to get it properly repaired.

Lockouts/glitching.  Found a burned/corroded antenna connection in the
receiver and sent it back for repair.  Another Aurora 9 flyer also had
glitching/lockouts at our field.

Only had digital throttle trim, and it cannot be mixed or assigned to a
slider such that it only acts on low throttle.

They promise lots of feature updates via firmware, but are VERY slow in
releasing anything.  And they won't say exactly what will be in the next
release. Bugs in heli and sailplane setups.   Requires purchase of a
separate box to update firmware.  Website in Korea that has the updates has
had frequent outages.  You CANNOT download the firmware and install it
later.  You MUST be hooked to the internet and download it real time. My
perception is that they are more enthralled with telemetry (that was a year
late in being released) than in getting the basic system up to snuff.  Oh,
and as far as I know, they still haven't released the 72mHz module promised
last fall, if that is of any concern.

Was glad to get rid of mine.

Jon Lowe

-----Original Message-----

From: Jerry Stebbins <JAStebbins at att.net>

To: Discussion -NSRCA <nsrca-discussion at lists.nsrca.org>

Sent: Fri, Oct 29, 2010 8:40 am

Subject: [NSRCA-discussion] Aurora review

I seem to remember someone did a vey thorough review of this radio a short
while back. Does anyone remember who, and what Magazine-when?

Thanks

Jerry

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--> There are only two types of aircraft -- fighters and targets.

Phil Spelt, Past President, Knox County Radio Control Society, Inc.
       URL: http://www.kcrctn.com <http://www.kcrctn.com/> 
AMA--1294,  Scientific Leader Member  SPA--177, Board Member
      My URL: http://mywebpages.comcast.net/~chuenkan/
      (865) 435-1476 v  (865) 604-0541 c 

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