Jet turbine reliability

On Tuesday, July 7, 2015 at 4:46:43 PM UTC-4, 2G wrote:
On Monday, July 6, 2015 at 1:47:38 PM UTC-7, Ramy wrote:
There was a recent landout of a brand new JS1 in the middle of nowhere near Hobbs during the contest due to jet failure. Multiple attempts were made to start it.
So much for jet reliability. Apparently can't trust them either.
I heard of at least 3 landouts of motorgliders recently.
Hopefully electric motors will be more reliable.

Ramy

I am interested in knowing which type of motorgliders and was a start attempted vs landing because there was insufficient altitude for a restart. My experience is that engine restart is very reliable because you have the benefit of windmilling to spin the prop faster (I know nothing about the jets). Most failures to start are the result of pilot error (myself included). But everything mechanical is subject to failure (that includes towplanes!).

Tom

It's a frikkin jet..... not much "windmilling" going on within VNE of the glider........

Guess you didn't read most of the thread...... ;-)

And.......they are still derivatives of model engines made by model engine manufacturers. We're not talking GE or Pratt & Whitney here

http://youtu.be/oACMOuSoHQc

From the Jonker website:
"M&D decided that rather than convert a model aircraft jet turbine into a glider sustainer, it would be better to develop and certificate a new engine."
I've been on an airliner that has had a major in-flight system failure. It happens to everyone.
Jim

On Tuesday, July 7, 2015 at 7:07:20 PM UTC-7, wrote:
And.......they are still derivatives of model engines made by model engine manufacturers. We're not talking GE or Pratt & Whitney here