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Brilliant Pictures…

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Just a Brilliant Picture…

Red Admiral butterfly in August

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Lovely pictures. Many thanks for sharing

Mike Powell

I just love the colors of this Red Admiral butterfly (Vanessa atalanta) that I photographed on Monday at Occoquan Bay National Wildlife Refuge. I mean, really, how can you not like an insect that sports the red, white, and blue?

You don’t have to be American to like those three colors—it seems like there are an awful lot of countries that use them in various shades and patterns in their national flags.

Red Admiral

© Michael Q. Powell. All rights reserved

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Birding in and around Windhoek Nature Travel Birding

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Rosy-faced Lovebird

Many people find it strange that I love my hometown of Windhoek so much. They say it is dry and drab, but I see it completely differently. It sits at 1700 metres above sea level (12th highest capital in the world) in the Khomas Highland plateau area between the Auas and Eros mountain ranges. It […]

via Birding in and around Windhoek — Nature Travel Birding

Four Tips for Late-Summer Flying

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Source: 4 Rules-Of-Thumb For Late-Summer Flying | Boldmethod

Rules-Of-Thumb For Late-Summer Flying; by Colin Cutter – 
Thanks to Boldmethod for sharing…
1) Calculating Civil Twilight
Summer days are getting shorter, but there’s still a lot of daylight left.
A good rule-of-thumb for calculating civil twilight is that it usually ends between 20-35 minutes after sunset. Tonight in Boulder, CO, sunset is at 8:05 PM, and civil twilight ends at 8:34 PM. That’s a difference of 29 minutes. Once twilight ends, you can start logging night flight time. But remember, you need to wait an hour after sunset to log night landings.

2) Takeoff roll increases about 10% for every additional 1,000 feet of density altitude
There’s no sign of the weather cooling down yet. And on hot days, you get high density altitude. For most normally-aspirated GA airplanes, you’ll add about 10% of takeoff roll for every 1,000′ of DA. For example, if your airport’s density altitude on a hot day is 3,200′ over field elevation, you’ll increase your takeoff roll by about 32% over an ISA day. So if you have a 1,500′ takeoff roll on an ISA day, you’ll increase that roll to almost 2,000′.

3) Stay a minimum of 5 miles from storms, and up to 20 miles if you can.
Flying closer than 5 miles from visible overhanging areas in storm clouds puts you at risk of flying through hail and severe turbulence. That’s not good for your plane, or your passengers. In some cases, aircraft have encountered hail, severe windshear, and severe turbulence up to 20 miles from storms. When in doubt, keep your distance.

GolfCharlie232

4) Add Half The Gust Factor On Windy Day Landings.
As we approach the end of summer, windy days increase across the US, because the jet stream starts moving south. When you’re dealing with a gusty day, the FAA recommends that you add half the gust factor to your final approach speed to give yourself safe padding from a stall. For example, if the winds are reported at 18 knots, gusting to 30 knots, it means you have a gust factor of 12 knots (30-18 = 12). So if you take half the gust factor, you get 6 knots (12/2 = 6).

Boldmethod

To apply that in an SR-22T, Cirrus recommends that you fly final at 80 knots. So on a day with a 12 knot gust factor, you’d add 6 knots to the published 80 knots, for a final approach speed of 86 knots. The same math works for any GA airplane’s final approach speed. Just add half the gust factor to your final approach speed.

Boldmethod

Thanks to Boldmethod for sharing. What other rules-of-thumb are you using? Tell us…
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Excellence is never an accident… choice, not chance, determines your destiny

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“Excellence is never an accident. It is always the result of high intention, sincere effort, and intelligent execution; it represents the wise choice of many alternatives – choice, not chance, determines your destiny.” Aristotle, Greek, philosopher

via “Excellence is never an accident… choice, not chance, determines your destiny.” — Art of Quotation

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