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A week in Pyrénées mountains

Again this year a very nice week flying from Santa Cilia de Jaca (Aragon)

Not so far away from the airfield, in France, Pic du midi d’Ossau is a nice sightseeing area.

Everyday so to speak, we were gliding along Canon de Ordessa, south of the famous brèche de Roland.

This area being a nature sanctuary, it was not to be flown directly over. Anyway prey bird such as Vultues, Percnoptère & Gypaètes were flying also outside of the parks ;-)

Sometime cloud where growing a bit too much…

… so that we went sight seing in Navarre.

Several time we flew close to each other for the sake of taking nice photo.

In the “wavelet” the view was all the most stunning.

In return I was taken some nice shots too.

Very nice week, and nice collection of images to be remember during cold winters !

LS6 winglet project

It has now been a long thought project : adding up my own winglets to LS6a “AD”.The story of the design and corresponding detailed aerodynamic analysis has been presented during XXXth OSTIV congress in Szeged (August 2010).Here is the presentation.Summ…

Calcuating Trigger Time

The last post covered the process of calculate trigger temperature and the mechanics of the atmosphere that are underway as the day heats up and thermals start. Today’s post will cover how to estimate what time the surface temperature will reach trigg…

Calcuating Trigger Time

The last post covered the process of calculate trigger temperature and the mechanics of the atmosphere that are underway as the day heats up and thermals start. Today’s post will cover how to estimate what time the surface temperature will reach trigg…

Calculating Trigger Temperature

If you want to fly long distances you need to get going early. The best way to make that happen is to be ready when the thermals start to pop; but how do you know when that will be? Today’s post will address how to determine Trigger temperature. My …