Type of glider: Ventus cM 17,6m,

Takeoff location:Menomonie Municipal- (US / 7)

Map

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Flight details

Points for the flight 140.03
Distance
Points for the flight 113.33
scoring distance 130.3
Speed 63.8 km/h
Duration 02:02:39
Triangle
Points for the flight 26.70
scoring distance 102.4 km
Speed 47.6 km/h
Duration 02:09:07
Scoring class 18m
Scoring start 20:04:40
Scoring end 22:20:31
Index: 115.0
Club None
Date of claim 06.05.2018 00:18:14
state IGC-File: Flight:

Flight path

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TopMeteo - Weather Charts

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Comment

The forecast called for mediocrity, and looking at the visible satellite images in the morning, I understood why: a band of middle – layer clouds migrating across Minnesota with Menomonie in its sites. But it was sunny all morning, and it was the early afternoon was mostly cloudy. My experience is that when the ground has been heated, after the clouds are taken away, thermals resume promptly.
I waited until after 2 o'clock, when a band of clouds adjust going off to the east and there was a blue gap. I took off about 230, and couldn't initially stay up, and got to practice in engine re-start in the pattern. The Ventus CM is so nice, I only lost 100 feet and extending and starting the engine. After this, I searched around adding promptly toward the sunny side of the earth.
Throughout the afternoon there was fairly dense middle-layer clouds to and blue sky to the south, often with lenticular's, occasionally stacked, and clouds in the West that seemed to promise to come over. So I stayed south, in the sun, and wandered around. Strong thermals were few and far between, and not often extend more than 500 feet. It was another exercise, since the day was blue, whether I understood, given the gentle southerly winds, where the next thermal would likely be found.
After about two hours rain appeared in the near west and so, instead of heading down south with the lift was obviously strong in the blue, I headed back home so as to get the glider in the box before the rain arrived.
When I took off, the winds in the lower boundary level were 160 at 8, and at the end of the afternoon the winds were to 220 at 10. On the ground, they were light and variable due to thermal inflow.

Pilot

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