Sukhoi PAK FA T-50 — Airplanes by Design

29 January 2010 – First flight of the PAK FA T-50 Click here to see other stealth aircraft and 4 unique design characteristics. __________________________________________________ Airplanes by Design features photographs of aircraft from a test pilot perspective, highlighting aeronautical engineering characteristics and flight test facts. WANTED: Your pictures and videos. Do you have pictures of aircraft […]

how many people have green eyes — ATOMs #14-6

How many people in the United States have green eyes? There are several ways to answer this question: 1. Count them all. 2. Estimate the proportion of the population that has green eyes using statistical data from a representative sample of the population. 3. Other methods, like creating a complex model to estimate the number. […]

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