Gliders and Lenticular Clouds

With some strong Northerly winds at high altitudes over Europe lately, we got the chance to see those massive clouds forming in mountainous areas.
Their impressive shape is the result from high altitude waves and they are a sign of exceptional soaring conditions for glider pilots.

Two weeks ago, a Belgian pilot took off from an airfield situated at the Belgian/Dutch border to land near the Spanish/French border a few hours later, covering over 1050 km (650 mi) without the use of an engine. A dozen flew circuits of up to 800 km in one go.

I was working around that time but got the chance to do a few flights in thermal soaring conditions (using lifts under Cumulus clouds), do a bit of formation flying and get back to stick-and-rudder flying, quite different from flying a swept-wing jet and probably more pleasant as well. 

I hope you will enjoy the video and the photos.

That's how addictive it gets, flying close to 100 hours per month for a living, flying as a passenger every week to commute back home and flying gliders on my days off.

Transiton and B737 Type Rating program

Glider towing was a very good experience.
Figures-wise, this represents some 1300 tow flights, on a 6 days on / 1 day off pattern, up to 14 consecutive flying days on some occasions.
I had the chance to do tows up to FL120 (12,000ft) for the National Test Pilots School (EPNER in France, equivalent of the British Empire Test Pilots School or the USAF Test Pilot School).

Figures stay figures, however it taught me a great deal of experience. I have had one engine failure on take-off (towing a heavy loaded two-seater glider), one occasion where the glider had its spoilers/speedbrakes stuck in the out position giving us a negative rate of climb on the initial path, several cable breaks, etc...
We operated in some serious weather conditions, with winds up to 40 kts, CBs forming all around on a daily basis, ...
When the airfield was flooded after heavy rains, we were to used the paved runways only.
Landing on the South-East side of the field, the Landing Distance Available was 120m (390ft), not much for this sort of planes.
Overall, an enjoyable and very valuable experience.

As always, good things come to an end, but yet the next step is one of which I have dreamt for years. Hired by a European airline, I started the Boeing 737NG Type Rating a few weeks ago and I should be flying the real aircraft around Christmas, first flights with passengers in January.

Type Rating program:
Week 1: Introduction, which covers topics such as our company's culture, CRM (Crew Ressource Management), SOP's (Standard Operating Procedures), Safety, Emergency Procedures, Survival and ditching training, Dangerous Goods, Fire and smoke drills, Operation of doors, ...
Weeks 2 to 4: CBT - Computer Based Training (Aircraft general knowledge and systems), FMS training (FMS simulator), SOP's training (cockpit mock-ups), Performances calculation, Mass & Balance, RVSM.
Weeks 5 to 10: Simulator training (60h of fixed base and full flight (full motion) simulator, and a further 20 hours as observer) and briefings.
LST: Licence Skills Tests (1 day),
Simulator Circuit Training (1 day),
Base Training (6 to 10 circuits on the actual aircraft, flown without passengers).

Airborne life continues...

Kingair, gliders and tow planes

As summer is approaching, we get busier and busier, hence the lack of posts on this blog lately.

Towing-wise, I've been checked out on a newly designed aircraft, the MCR-180. This basically is a small and very light aircraft (450 kg / 990 lbs) powered by the classic 180 hp Lycoming engine, driving a 5-blade low-pitch propeller. The performances are truely impressive but the plane is not much fun to fly. It requires a very smooth handling and it is amazingly unstable, especially at low speeds.
Anyway, climb rates make it cheap to operate and this is what glider pilots are after. It wears the number 1 CN and is flown as an Experimental aircraft. As such, we have to make various reports after each flight, as a way to improve or even re-design some of the aircraft.

Gliding-wise, there is so much to explore in the area, it is incredibly beautiful and there's no way to get tired of it. I got the chance to fly the Nimbus 4D, a 26.5m (87ft) wide glider, and fly to Grenoble and back. Sadly, I didn't have my camera on me at that time, I don't think I've ever seen sceneries of such beauty before. The area South-East of St Auban (St Auban is the small city where I'm based) is also very nice, and it is one of the most touristic area of the South Alps region.

I also got to fly the Kingair, again, and it is a very good thing as .. I've got an airline interview coming up, and a good CRM will be of a good help.

Airborne life continues...

Glider release: now!

Flying towards the bright side of the mountain ridge, I'm expecting the kick in the seat that will give me a hint when I reach the rising air.
The speed looks stable, the glider 200 ft behind me is following my path nicely, and I can now clearly spot the dozen of gliders already flying along the ridge and using the steep slope as a way to gain altitude as the wind is blowing towards it.
It's deep blue pretty much everywhere today, hot as well, a nice soaring day. The glider I will release is going to stay in the air for at least 5 hours and complete a closed circuit of more than 500 km (300nm).
Here it is, the push feeling in the seat, the speed increases and the rate of climb doubles initially before increasing even more.
Looking over my left wing, it looks like we're in a lift. Or it could be the ridge falling down very quickly. My VSI indicates more than 1500 ft/min when the glider decides to release the cable, and the fun begins...

Flaps up with full ailerons deflection well past a normal steep turn, enough to allow the nose to go down and the speed to settle around VNO / VNO + 20.
When we tow the gliders to a close hill, we usually have quite a bit of height to loose over a short distance, giving us some interesting descent rates of 3-4000 ft/min.
Most of the time, the final approach is flown under a path angle varying between 10 and 15% instead of the usual 5%.
Needless to say that flying-wise, it is a lot of fun, and it sharpens the hand flying skills.
We sometimes get to do some formation flying when two tow planes release their gliders at the same time in the same area.

I included two drawings of the airfield configurations. Being a busy airfield, it can get a bit confusing at times with gliders landing everywhere, tow planes taking-off from three different concrete strips, other tow planes landing between them, and the winch in use at the same time.

Airborne life continues...

A month of glider towing

Roughly 40 hours in the tow planes, 12 hours of soaring, nearly 300 tow flights, not bad for a quiet month.
It's actually getting a lot busier now, and the nice weather does help a lot. We've reached 32°C (90°F) last week, way above the average for this time of year.

The airfield is home of the national soaring centre, we get all the different teams training with us for this summer's championships.
Last week was the female week, and the previous one was focused on the Soaring National French Team.
A dozen of young glider pilots are also here every week-end as part of the "young team".
Also on the airfield are about 30 german pilots along with dozens of pilots from other countries.
Needless to say we get very busy at times, especially around 12:30pm where up to 8 tow planes (3 of them belonging to the French Air Force as they have based 15 gliders on the airfield) and 2 winch launch trucks are used to put all those gliders in the air.
Everything calms down around 3 pm, and we usually get to tow another dozen of gliders between 4 and 5.

Most tow flights last between 5 and 11 minutes, with an average of 8 minutes, and a tow for an aerobatic flight is done in 12 minutes, 11 minutes of which are spent in the climb and the remaining minute is enough to loose 5000ft and land ...

When we are not in the plane, we're either in a glider or in the control tower, or watching the gliders high speed fly-by's which can be pretty amazing!

Airborne life continues...

7 hours in a glider above the Alps

As well as building my flying hours, I get to fly gliders every now and then and got the chance to do a 7 hr flight across the French Alps, flying a circuit of just over 300 km (160 nm), and a total flown distance of 660 km (350 nm).
We reached an altitude of 15,000ft in a very cold and dry air, using the waves as a mean of soaring. We could have climbed probably up to 20,000ft but it was just too cold.
Needless to say the view from such high altitudes is absolutely amazing!

The glider-towing is going well despite the quite challenging weather. I'm on my way to my 200th tow flight already.
The flying in itself is not difficult, what makes it interesting is the challenge to find a thermal (column of rising air) or release the glider on a ridge with upgoing air, usually surounded by dozens of gliders, most of which are difficult to see.
We use the gliding equivalent of the TCAS, called "Flarm", as a mean of detecting other gliders and tow planes in the area. It does not always work though.

When the airfield is wet (as it has been for the past few days), we use solely the short concrete strips to take-off .. and to land. Some landings look more like an aircraft-carrier landing, and it is possible to stop the plane within a hundred meters (330ft).
The fun begins when we release the glider and make a steep descending turn, well over 60° bank, descending between 2000 and 3000ft/min back to the airfield.
The soaring centre's activity is doubling from this week onwards, and will double again for the summer period.
I've been flying around 2 hours a day lately, which is quite good already, considering we fly pretty much everyday, whatever the weather does to us.

What usually means a "no-go" for a plane pilot, can actually be excellent for a glider pilot.
A strong wind creates waves with very good rates of climb (often well above 2000ft/min of rising air), as well as a rising air along a ridge. We set up a surface wind limit of 40 kts.
A big dark cloud is the place where you want to fly if you are a glider pilot, as those dark cumulus are the sign of a thermal. The darker and the bigger the cloud, the stronger the thermal.
Very interesting flying, and well fun!

Airborne life continues...