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Jonathan Tobin: Defending the Right to a Jewish State

Heather Hale: Compliment your kids without giving them big heads

Megan Shauri: 10 ways you are ruining your own happiness

Carolyn Bigda: 8 Best Dividend Stocks for 2015

Kiplinger's Personal Finance editors: 7 Things You Didn't Know About Paying Off Student Loans

Samantha Olson: The Crucial Mistake 55% Of Parents Are Making At Their Baby's Bedtime

Densie Well, Ph.D., R.D. Open your eyes to yellow vegetables

The Kosher Gourmet by Megan Gordon With its colorful cache of purples and oranges and reds, COLLARD GREEN SLAW is a marvelous mood booster --- not to mention just downright delish
April 18, 2014

Rabbi Yonason Goldson: Clarifying one of the greatest philosophical conundrums in theology

Caroline B. Glick: The disappearance of US will

Megan Wallgren: 10 things I've learned from my teenagers

Lizette Borreli: Green Tea Boosts Brain Power, May Help Treat Dementia

John Ericson: Trying hard to be 'positive' but never succeeding? Blame Your Brain

The Kosher Gourmet by Julie Rothman Almondy, flourless torta del re (Italian king's cake), has royal roots, is simple to make, . . . but devour it because it's simply delicious

April 14, 2014

Rabbi Dr Naftali Brawer: Passover frees us from the tyranny of time

Greg Crosby: Passing Over Religion

Eric Schulzke: First degree: How America really recovered from a murder epidemic

Georgia Lee: When love is not enough: Teaching your kids about the realities of adult relationships

Cameron Huddleston: Freebies for Your Lawn and Garden

Gordon Pape: How you can tell if your financial adviser is setting you up for potential ruin

Dana Dovey: Up to 500,000 people die each year from hepatitis C-related liver disease. New Treatment Has Over 90% Success Rate

Justin Caba: Eating Watermelon Can Help Control High Blood Pressure

The Kosher Gourmet by Joshua E. London and Lou Marmon Don't dare pass over these Pesach picks for Manischewitz!

April 11, 2014

Rabbi Hillel Goldberg: Silence is much more than golden

Caroline B. Glick: Forgetting freedom at Passover

Susan Swann: How to value a child for who he is, not just what he does

Cameron Huddleston: 7 Financial Tasks You Should Tackle Right Now

Sandra Block and Lisa Gerstner: How to Profit From Your Passion

Susan Scutti: A Simple Blood Test Might Soon Diagnose Cancer

Chris Weller: Have A Slow Metabolism? Let Science Speed It Up For You

The Kosher Gourmet by Diane Rossen Worthington Whitefish Terrine: A French take on gefilte fish

April 9, 2014

Jonathan Tobin: Why Did Kerry Lie About Israeli Blame?

Samuel G. Freedman: A resolution 70 years later for a father's unsettling legacy of ashes from Dachau

Jessica Ivins: A resolution 70 years later for a father's unsettling legacy of ashes from Dachau

Kim Giles: Asking for help is not weakness

Kathy Kristof and Barbara Hoch Marcus: 7 Great Growth Israeli Stocks

Matthew Mientka: How Beans, Peas, And Chickpeas Cleanse Bad Cholesterol and Lowers Risk of Heart Disease

Sabrina Bachai: 5 At-Home Treatments For Headaches

The Kosher Gourmet by Daniel Neman Have yourself a matzo ball: The secrets bubby never told you and recipes she could have never imagined

April 8, 2014

Lori Nawyn: At Your Wit's End and Back: Finding Peace

Susan B. Garland and Rachel L. Sheedy: Strategies Married Couples Can Use to Boost Benefits

David Muhlbaum: Smart Tax Deductions Non-Itemizers Can Claim

Jill Weisenberger, M.S., R.D.N., C.D.E : Before You Lose Your Mental Edge

Dana Dovey: Coffee Drinkers Rejoice! Your Cup Of Joe Can Prevent Death From Liver Disease

Chris Weller: Electric 'Thinking Cap' Puts Your Brain Power Into High Gear

The Kosher Gourmet by Marlene Parrish A gift of hazelnuts keeps giving --- for a variety of nutty recipes: Entree, side, soup, dessert

April 4, 2014

Rabbi David Gutterman: The Word for Nothing Means Everything

Charles Krauthammer: Kerry's folly, Chapter 3

Amy Peterson: A life of love: How to build lasting relationships with your children

John Ericson: Older Women: Save Your Heart, Prevent Stroke Don't Drink Diet

John Ericson: Why 50 million Americans will still have spring allergies after taking meds

Cameron Huddleston: Best and Worst Buys of April 2014

Stacy Rapacon: Great Mutual Funds for Young Investors

Sarah Boesveld: Teacher keeps promise to mail thousands of former students letters written by their past selves

The Kosher Gourmet by Sharon Thompson Anyone can make a salad, you say. But can they make a great salad? (SECRETS, TESTED TECHNIQUES + 4 RECIPES, INCLUDING DRESSINGS)

April 2, 2014

Paul Greenberg: Death and joy in the spring

Dan Barry: Should South Carolina Jews be forced to maintain this chimney built by Germans serving the Nazis?

Mayra Bitsko: Save me! An alien took over my child's personality

Frank Clayton: Get happy: 20 scientifically proven happiness activities

Susan Scutti: It's Genetic! Obesity and the 'Carb Breakdown' Gene

Lecia Bushak: Why Hand Sanitizer May Actually Harm Your Health

Stacy Rapacon: Great Funds You Can Own for $500 or Less

Cameron Huddleston: 7 Ways to Save on Home Decor

The Kosher Gourmet by Steve Petusevsky Exploring ingredients as edible-stuffed containers (TWO RECIPES + TIPS & TECHINQUES)

Jewish World Review

How ejection seats work

By Marshall Brain

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http://www.JewishWorldReview.com | (MCT) It is one of the most dramatic things you will ever see. A multi-million dollar fighter jet is streaking toward the ground at hundreds of miles per hour. In another second the plane will explode into a million pieces when it craters into the earth. Then, at the last moment, you watch the pilot eject. If you are close enough, what you see is something that looks like a rocket powered chair carrying the pilot, and then a parachute opens to bring the pilot safely to the ground.

What has happened? From the pilot's perspective it is a small miracle - a miracle that has saved hundreds of lives over the years. From an engineer's perspective, it is the combination of technologies that tries to make the best of a bad situation. Every ejection seat system is different, but they all have a lot in common. So let's look at the technology that gives an ejection seat the power to rescue the pilot from certain death.

The first step is for the pilot to recognize that things are hopeless. The plane is going to crash and there is nothing that he or she can do about it. At this moment, the pilot reaches for the ejection handle. It might be alongside the seat or between the legs or above his head. Pulling the handle starts the ejection process.

The next step is to get rid of the canopy. The canopy is the clear shell that covers the cockpit, and it has to get out of the way. One system uses explosive bolts and small rockets. The bolts release the canopy and the rockets push the canopy up and out of the way. The other system uses a system of explosive cords attached to the canopy. The cords explode and completely shatter the canopy.

Now that the seat has a clear path out of the plane, it begins to do its job. The first phase of ejection uses a catapult gun. The seat slides along the rails of the catapult for several feet so that it is moving in the right direction.

Next, several rocket engines under the seat fire. These rocket engines need to solve a pressing problem during ejection, and that problem is known as the tail of the plane. As soon as the pilot and his seat get out into the slipstream, the wind is going to push the seat straight toward the tail of the plane. The rocket engine gets the seat moving fast enough so that it misses the tail.

This entire process - the canopy, catapult and rockets - all happens in about half a second. At this point the seat has done its job. So a motor fires to cut the pilot loose from the seat and the parachute system starts to deploy. This is a little tricky, because if the pilot is close to the ground moving slowly you want to do one thing. On the other hand, if the pilot is two miles up flying near the speed of sound, you want to do something else. The seat has sensors that let it detect its speed and altitude. Depending on the conditions, it may or may not use a drogue chute to slow the pilot down, and it may or may not delay the opening of the main parachute.

Once the parachute opens, the pilot floats to the ground. The ground might be right there if the pilot ejected a low altitude, or it might be two miles below. Or it might not be there are all if the pilot ejected over water, and the pilot has to get ready to swim.

As you might imagine, a ride in an ejection seat is not fun. The seat ejects the pilot into wind that is blowing at hundreds of miles per hour, and accelerates the pilot upward from zero to 250 miles per hour in about half a second. The G-forces on the pilot can be gigantic, and then he has to nail the landing. Still, it is better than dying instantly when the plane hits the ground and explodes.

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Previously:


How reattaching limbs works
How hot air balloons work
How paparazzi work
How counterfeiting works
How CDs work
How the Edsel worked
How Stinger missiles work
How hybrid cars work
How sharks work
How mosquitoes work
How diesel engines work
How water towers work
How the Dawn mission works
How Kassam rockets work
How the North American Eagle works
Why aren't we flying to work?
How tofu and soy milk work
How Colony Collapse Disorder works
How airbags work
How the U.S. income tax works
How gum works
How caffeine works
How Daylight Saving Time works
How a cruise missile works
How snow making works

© 2007, How Stuff Works Inc. Distributed by McClatchy-Tribune Information Services.

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