Round 1 of the HTL (Highveld Thermal League)
21 February 2016
The HTL contest is a thermal duration contest, normally 6 rounds of 10 minutes is flown (during 12 minutes of working time) with one round you can discard. Landings are scored from 100 to 0 points with every cm counting 1 point (so 10m or further equals 0 points. If you exceed the 10 minutes, even by 1 second you loose your landing points and if you land 75m or further away from the spot you score 0 for the round.
This is normally a winch launch contest flown with F3J gliders but to boost the number of entrants the organizers decided to allow electric launch planes with a 30 second or 200m height limit. This seemed fair as the winches were using 200m mono filament lines so with a zoom they can also launch to 200m or higher.
As I am predominately a F5J pilot I decided to enter with my F5J planes, I realized I had little hope of doing well (extra drag from the prop, more weight and not being able to "dork" land like the F3J guys all counted against the electric planes) but I thought the practice would be great. As it turned out the contest was really fun and it was nice to see the F3J guys in action, with the whole 2016 F3J WC team in attendance the standard of flying was really great!
It turned out that only 2 electric planes entered, myself and my flying buddy Frank.
Early morning at GEMS flying field
As usual I arrived really early and assembled my Osprey and Supra planes. The weather prediction was for a gentle breeze from the south-east so the plan was to fly the light Osprey as the primary plane with the Supra as backup.
At first the weather prediction seemed right but soon after I had the planes assembled the wind started blowing up to about 28km/h. This made me decide to get my "heavy weather" plane, the Xplorer ready as well. As things turned out the wind dropped a bit later but the Supra seemed the better choice so that was the plane I flew.
My planes ready to go
Soon other pilots started to arrive and the GEMS flying field was a hive of activity with planes being assembled and winches being laid out. I managed to take a few photos as I was ready to go!
First competitors assembling planes
Nice collection of planes!
More planes and some shade.
By the time all the planes were ready to go there was a really nice collection of planes present, every single one a molded plane with the most popular models being Supras and Xplorers. A few test flights were flown before the pilot's briefing, seemed like everyone was happy with their equipment.
After the pilot's briefing we started with round 1, I was in group 1 so no time was wasted getting into the air. There was no sign of lift, it was now quite heavily overcast and the round turned out to be a question of who can float the longest! I managed to stay airborne for just over 8 minutes but unfortunately I totally missed the spot as the wind picked up right as I had to land, since I was trying to stretch the time I was rather low so I simply landed short, about 12m from the spot! Lesson learned, the landing is worth 1:40 flying time so rather than stretch the glide get the landing points.
On the normalized (Man on Man) score I ended up with 784 points, this would turn out to be my worst, and thus drop round.
Round 1
I flew in round 2, group 3, so I had a bit of time to relax while timing for other pilots. It was obvious that everyone was struggling with the marginal conditions.
When my turn came I had a good launch and moved upwind to where I had seen other pilots catch some wave lift, it turned out that it was not easy to ride so after an initial bit of "not coming down" I started coming down a lot faster that I liked. Fortunately I managed to catch a weak thermal from around 40m altitude that allowed me, with some careful flying, to reach 10 minutes. Unfortunately, I AGAIN missed the spot, the sudden wind changes was not helping, I decided to come in fast and a lot higher on the next rounds. My efforts netted me 903 points, I had the best duration in the group but the 0 for the landing robbed me of a 1000.
Round 2
Round 3 was "interesting". I managed to work the wave lift a lot better this time, the Supra was not climbing at all but it was at least maintaining altitude. All was fine till it started raining! At first just a few drops but then a lot more! People were running for cover with their planes but the guys flying continued. As I wear prescription glasses it soon became a problem trying to see the plane, I decided to rather land a bit early than loose/crash the plane.
I was only slightly short of 10 minutes and at least I managed to get some landing points, unfortunately one of the national team members flying in my group had a great flight so I ended up with 847 points, not a great round but it was fun flying in the rain!
Round 3, rather wet!
After a slight rain delay we started round 4, I was up early and with a few drops of rain still around, and more heavy rain in the distance I was worried! I again managed to work the wave lift for a while but soon fell out, once below about 160m you were below the lift and the slow decent started.
Fortunately I managed to stretch the glide, I found that about 3mm of camber on the Supra really helps. As I was getting ready to land on 10 minutes I realized that everyone else was down already and they were all watching my landing to see if I could take the round, lots of pressure!
Fortunately I got it right ending, after a short slide on the wet grass, about 1.2m from the spot, this was good enough for a round win and 1000 points. When I got the landing right a few guys cheered, nice sportsmanship!
Round 4
Round 5 also started with me riding the wave lift, even climbing about 50m this time but then the wind dropped and it was time for the usual slow decent, well, actually it was descending a lot faster than I hoped it would!
I decided to not try and stretch it but rather concentrate on a good landing. As I was turning finals at about 20m altitude and just short of 8 minutes into the flight I felt a slight bump, since it was rather low and by now the wind had picked up again I was rather hesitant to try and work the lift, the lost landing points in the first 2 rounds were still haunting me! My timer was rather surprised that I decided to do one turn, I could hear in his voice that he was not impressed!
Well, the one turn gained me a bit of height, but I also drifted a lot down wind and I realized I now had no choice, I had to work this thermal to get enough altitude else I would never make the spot! The thermal started breaking away from the ground and I had some hope! Then my timer, who was watch my plane and not the clock suddenly announced that I had less than one minute left! A mad dive/dash for the spot resulted in a less than perfect landing but at least I did not overrun the time but it was close!
The normalized score of 992 was not bad everything considered!
Round 5
By round 6 the clouds had mostly cleared and a few guys were catching and riding thermals, the wind had also dropped a bit, but just a bit. My launch was fine and I headed for my normal wave riding spot. I could soon see that the wave was not going to help me this time as the change is wind strength and direction made it very weak!
A search towards the South soon resulted in me finding a decent thermal, it drifted downwind fast but as the Supra was climbing well I was not too concerned. Soon it was so high and far downwind that I chickened out and left the thermal to return at high altitude. After the contest a check on the Altis log showed that I abandoned the thermal at 503m above ground level!
Soon I had to decent as the time was running out, full crow brakes got me down to a decent altitude where I then spent some time looping, rolling and doing split-S's, lots of fun! When the time came to land I misjudged it a bit as there was now no wind, I landed about 15 seconds early as I had to use a lot of crow to burn height at the last moment but at least my landing was decent.
My score for this round was 975, seemed like some other pilot also found lift and one got his timing right!
Round 6, maximum altitude 503m!
Can't wait for the next HTL contest, I think if the conditions are better and it does not turn into a floating contest a F5J plane can be competitive, time will tell......