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Archive for August, 2009

Aircraft Weight and Balance Handbook

by @ Monday, August 24th, 2009. Filed under Mechanical engineering

File : pdf, 12.8 MB, 94 pages
by FAA
TOC
Chapter 1
Weight and Balance Control
Weight Control
Effects of Weight
Weight Changes
Stability and Balance Control
Weight Control for Aircraft other than Fixed and Rotorwing
Chapter 2
Weight and Balance Theory
and Documentation
Weight and Balance Theory
Aircraft Arms, Weights, and Moments
The Law of the Lever
Determining the CG
Shifting the CG
Basic Weight and Balance Equation
Shifting the Airplane CG
Weight and [...]

Switchgear and Relaying

by @ Wednesday, August 19th, 2009. Filed under Electrical engineering

File : pdf, 3.5 MB, 68 pages
TOC
1. Sources of criteria
2. Medium and High-voltage Switchgear
2.1 Medium and High-voltage Classes
2.2 Circuit-Interupting Devices
2.2.1 Circuit Breakers
2.2.1.1 VOltage Rating
2.2.1.2 Insulation Level Rated Impulse Withstand Voltage
2.2.1.3 Frequency
2.2.2 Reclosers and Sectionalizers
2.2.3 Power Fuses
2.2.4 Load-Break Switches
2.3 Circuit-Isolating Devices
2.3.1 Locations
2.3.2 Rating
2.3.3 Type
2.3.4 Selection
2.4 Protection Devices
2.4.1 Surge Study
2.4.2 Traveling Waves
2.4.3 Equipment Selection
2.4.4 Coordination
3. Low-Voltage Switchgear [...]

Little Handbook of Statistical Practice

by @ Saturday, August 15th, 2009. Filed under Mechanical engineering

 TOC
* Introductory remarks and an advisory
* Is statistics hard?
* An all-important foundation!
o Cause & Effect
o Study design
o Random Samples / Randomization
o Randomization plans
o Units of analysis
o Creating data files
* The basics
o Look At the Data!
o Logarithms
o Summary Statistics
o Probability
o The Normal Distribution
o Outliers
o The Behavior of Sample Means
(or Why Confidence Intervals Always Seem to be [...]

Amateur-built Aircraft and Ultralight Flight Testing Handbook

by @ Tuesday, August 11th, 2009. Filed under Mechanical engineering

File : pdf, 800KB, 99 pages
TOC
CHAPT 1. PREPARATION
1. Homework
2. Airport Selection
Figure 1 – Runway Length Chart
3. Emergency Plans and Equipment
4. Test Pilot
5. Medical Facts For Pilots
6. Transporting The Aircraft To the Airport
7. Assembly and Airworthiness Inspection
8. Weight and Balance Figure 2 – Empty Weight CG
Figure 3 – Take Off CG
Figure 4 – Additional Equipment Added
9. [...]

Introduction to Logic

by @ Friday, August 7th, 2009. Filed under Mathematics, physics

File : pdf, 4 MB, 179 pages
by Michal Walicki
TOC
A. Logic – patterns of reasoning
A1. Reductio ad absurdum
A2. Aristotle
A3. Other patterns and later developments
B. Logic – a language about something
B1. Early semantic observations and problems
B2. The Scholastic theory of supposition
B3. Intension vs extension
B4. Modalities
C. Logic – a symbolic language
C1. The “universally characteristic language”
D. 19th and 20th [...]

Rejuvenators, Rejuvenator/Sealers, and Seal Coats for Airfield Pavements

by @ Monday, August 3rd, 2009. Filed under civil engineering

File : pdf, 2.9 MB, 121 pages
TOC
Contents
Preface
1—Introduction
Background Objective Scope Rejuvenators
Seal coats
2—Preventive Maintenance General Rejuvenators
Seal Coats
3—Field Evaluation Test Sites MacDill AFB
McGuire AFB
Existing Pavement Surface Conditions
MacDill AFB
McGuire AFB
Surface Texture – Sand Patch Skid Resistance
British Pendulum
Grip Tester
Saab Friction Tester
Material Costs
4—WES Test Sections Test Pavement Surface Texture Skid Testing
Fuel Resistance
Summary
5—Laboratory Evaluation
Material Properties Field Test Section Samples Penetration and viscosity
Dynamic [...]

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