PowerFlarm and ADS-B solution, can we find one?

On Saturday, January 9, 2016 at 7:30:48 PM UTC-5, jfitch wrote:
On Saturday, January 9, 2016 at 12:08:39 PM UTC-8, XC wrote:
SNIPLet's make sure these numbers are based on some evidence.

Based on evidence presented so far, we don't even have a need for a stealth, so that is an odd statement.

The 5 second TCAS has got to be a minimum, panic mode number. Also do not just consider the case of one glider meeting one glider. Consider 5 gliders meeting 5 gliders. No longer can you just turn right or pull up, doing so may well cause an accident rather than prevent one.

More details about TCAS for comparison:

5 sec. is the maximum expected reaction time for a warning or RA. That is with the autopilot engaged and the pilot not actively engaged on the flight controls. The anticipated reaction time to reverse, increase or decrease vertical speed once the pilot is flying the machine is 2.5 sec.

"Initial vertical speed reaction to a RA is expected within 5 seconds; maneuvering G forces should be similar to those felt when responding to an ATC clearance to climb or defend "immediately" (+/- 0.25 G change in load factor)." That doesn't sound too panicked.

The TCAS display is selectable Above/Norm/Below. My company recommends normal in all phases of flight which gives +/- 2700 ft on the display. This is for aircraft capable of climbing or descending 6000 ft/min. "Above" can be selected in the climb which would give a view of aircraft 7000 ft above and 2700 ft below.

Now this is a different system, I understand, but my point is that it is not cross referenced continuously as a source of SA. Rather, it is an alert system that provides traffic advisories (TA) as aircraft are getting to be a factor ("Traffic") and resolution advisories (RA) ("Traffic, Climb/Descend)"when action is required by the pilot. The audio alerts and warnings have priority and have been determined to be more effective than the instrument panel display for collision avoidance.

Similarly, displaying all traffic on FLARM at these greater distances and relative altitudes is not required for SA or collision avoidance. In fact, spending too much time looking down at the display may be contrary to safety.. Again, this discussion goes beyond collision avoidance and gets into pilots wanting to track other gliders for tactical reasons.

XC