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Xc Title
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Hugh Miller  All flights
National League 2017
Flight type image
Turnpoint Flight on a Paraglider
Club
Southern
Glider
Ozone Zeno
Date
14th May 2017
Start
11:53
Finish
17:41
Duration
5hrs 47mins
Takeoff
Milk Hill White Horse
Landing
Worthing, Norfolk
Coords
Takeoff
51.37260, -1.86057
Start
51.37087, -1.86292
TP1
51.50110, -1.40348
TP2
51.67253, -1.11503
TP3
51.88002, -0.95632
Finish
52.73947, 0.96208
Landing
52.73907, 0.96187
Distances and Score
Leg 1
35.08k
Leg 2
27.63k
Leg 3
25.55k
Leg 4
162.06k
Total
250.32k
Score
250.3
Open Distance
Total
246.4k
Filename
Use full pilot name
Download
Validated
Yes
Flight map
Notes

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Use the for a detailed map and flight track.

Duration 0:00   Takeoff Distance 0
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Track data
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Units
Height: metres
Climb: m/sec
Speed: km/h
Distance: km
chart
Notes

Climb and Speed averaged over 4 second intervals.

These values may be lower than those shown by a flight instrument, which has access to continuous raw data.

Metric units are used for all chart data, except for Height which is shown in feet.

Height   -   GPS data
Maximum Height
[16:21:04]
5650 ft
Lowest Save
[15:13:57]
1460 ft
Takeoff Height
[11:48:57]
738 ft
Landing Height
[17:41:54]
108 ft
Total Ascent 42641 ft
Height Gain
Above Takeoff 4911 ft
Maximum 4918 ft
Low Point
[11:49:01]
732 ft
High Point
as Maximum Height
5650 ft
Units
Climb   -   Pressure data
Maximum Climb
[12:38:49]
5.5 m/s
Minimum Climb
[13:56:25]
-4.8 m/s
Units
Speed
Maximum Speed
[15:10:57]
93.6 km/h
Average Speed
around course
43.2 km/h
Average Speed
over track length
50.5 km/h
Units
Tracklog
Flight Duration 5hrs 52mins
Track Points 21178
Recording Interval 1 secs
Statistics Interval 4 secs
Track Length 296.9 km
Units
Flight instrument
Type Oudie 3
Model Not Set
Firmware 7.21.003
Notes

Climb and Speed averaged over 4 second intervals.

These values may be lower than those shown by a flight instrument, which has access to continuous raw data.

Average Speed around course is measured from Start to Finish points.

Track Length is the cumulative distance between track points from Takeoff to Landing.

You can change the default units displayed - see the Options page.

The Lasham forecast was pretty much spot on for the day but I'd like to write up my take on it all as I know a lot of pilots, including myself, are cautious about flying on days like that.

The first hazard was the wind… I really don't like too much wind, and when we arrived I wasn't sure if I would fly, but as the mixing started it became more comfortable and it was easy to push forward on the hill, hands-up. At times it dropped to the point we couldn't ridge soar, but once we were up at base there was obviously a very good drift.

Luke, Jim and Joe got away early then a big gaggle of us left at around noon. I ended up plugging on with Mark Watts, Guy Anderson and Harry Bloxham and we worked really well as a team doing the necessary cross winding to get around airspace… It would have been much much harder on your own.

Apart from the wind, my other concern was overdevelopment. We had a lucky route though… All the cloud tops in our area were around 6 - 8 K, and bizarrely most of the big good looking clouds weren't working - most of our climbs were under developing wispy bits rather than the established clouds.

I know some friends saw some pretty heavy downpours further south in the country, but I only saw two showers all day. The first was 30 km ahead of us near Milton Keynes and we pushed well north of that. I wasn't too concerned as the cloud was much, much wider than it was tall, indicating that dry air above the cloud was capping it, as Lasham predicted.

The second shower was to our left over Swaffham as we got close to our set goal (237 km). It was a little too close to our course line for comfort. It started spitting and coming across at us more than I expected so we had to abandon ship and run from that one. I probably should have treated if with even more caution… If I'm honest I probably got a bit goal-sucked.

Anyhow a great day out, and many many thanks to Carl Foster for scooping me and Mark up (we landed near the Norfolk tow field) and getting us to a station - really appreciated!

This is the forecast for Lasham on Sunday 14/05/2017:

Synopsis: An occlusion through overnight, well clear of us by 6am (? ) and clearing the east coast by about midday. The hint of a ridge of high pressure and a fairly nice looking airmass, though it could be a bit showery.

A start by 10am with wind 260/15-17kts and a temp of 13-14C giving cu base 2500-3000ft+. Getting good quickly - strong thermals, but also the cumulus tops going to 7-8000ft.

By early afternoon wind settles to 240/17kts, strong thermals under towering cumulus base 4000-4500ft+, most tops to 8000ft, but some going to 12,000ft and the risk of a shower.

Most places should enjoy something like that - strong thermals under towering cumulus base 3000-3500ft+ with the best bits being near the south coast, E. Anglia (later on) and S. Wales (later on). The towering cumulus goes into mostly dry air so I am not that worried about overdevelopment or isolated showers…

… BUT The BBC is talking about a strip of showers running from Devon (or the Bristol channel) downwind in the afternoon and the soundings show an area like that which will overdevelop and probably shower. Guessing it is either the convergence from the west country OR from the Bristol Channel - sorry - not sure. It will be significant for us either because it's a motorway or lots of showers that stop us getting home! I can see the soundings are good most other places, but this bit is awkward weather-wise and task-wise.

With the wind and the shower risk and this risk-of-a-line-of-showers I'd still say it is probably a 300-500k day. It is fairly easy to envisage a 500k. But can't help thinking if its streets and you use the good bits and avoid the bad bits it could be a 600km+?

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