Civil jet aircraft performance

Slides:

Advertisements

Similar presentations

52 RCACS Ground School Theory of Flight PO 402 EO 4

Advertisements

Forces act in pairs.

Lecture X: Wind Factors

How Airplanes Fly Forces

By Anthony, Reuben and Micheal

Lecture 3: Take-off Performance

Introduction to Propulsion

Airplane forces. Weight and Lift WEIGHT – directed to the center of earth – airplane parts, fuel, and people, luggage or freight LIFT – generated by the.

Lesson 28 Cruise Range and Endurance

The Forces on an Airplane. Four Main Forces Lift, Weight, Thrust, and Drag.

Aero Engineering 315 Lesson 33 GR3 Review. General strategy  Prior to class Review reading for lessons 23 – 32 Work / review problems #26 – 42 Review.

Aero Engineering 315 Lesson 27 Gliding and Climbing Flight.

Review Chapter 12. Fundamental Flight Maneuvers Straight and Level Turns Climbs Descents.

MAE 3241: AERODYNAMICS AND FLIGHT MECHANICS

Introduction to Aeronautical Engineering

MAE 4261: AIR-BREATHING ENGINES

The Four Forces of Flight

Takeoff Performance Jet Aircraft Performance

What Causes an Airplane to Fly? Test Your Knowledge ! Match term with letter. Weight Drag Lift Thrust A_______ B________ C________ D________.

Aerodynamic Forces Lift and Drag Aerospace Engineering

AE 1350 Lecture Notes #9.

Aerodynamics Dane Johannessen.

Elements of Airplane Performance

Aerodynamics 1 BASIC AERODYNAMICS. Aerodynamics 2 Aerodynamic Terms Angle of Attack Angle Between Chord Line & Relative Wind Relative Wind The direction.

AVAT11001: Course Outline Aircraft and Terminology

Forces of Flight and Stability

Lecture 5: Climb PERFORMANCE

Principles of Flight Escondido Adventist Academy 24 May 2013.

Theory of Flight 6.04 Laws and Forces References: FTGU pages

Airplane Flight: X-Plane in the Classroom Four Forces Of Flight Weight Lift Drag Thrust.

Aerodynamic Forces Lift and Drag.

Forces of Flight Making Flight Possible What FOUR Forces are acting on Aircraft ? What is the role of Newton ’ s 2 nd Law of Motion ( f = ma )? Aircraft.

How Planes Fly Welcome to Unpacked, where we demystify hot topics in the airline industry! In this edition we take a 30,000 foot look at the physics behind.

Basic Aeronautics Know the principles of basic aeronautics. 1. Describe the effects of angle of attack. 2. Identify the four forces of flight.

Basic Aeronautics Know the principles of basic aeronautics. 1. Describe the effects of angle of attack. 2. Identify the four forces of flight. Lesson.

Chalmers University of Technology Elementary axial turbine theory –Velocity triangles –Degree of reaction –Blade loading coefficient, flow coefficient.

Theory of Flight All are demonstrated by the flight of the bird!

1 Chapter 6 Elements of Airplane Performance Prof. Galal Bahgat Salem Aerospace Dept. Cairo University.

Flight Investigations TEXT BOOK CHAPTER 16 PAGE

AE 2350 Lecture Notes #9 May 10, 1999 We have looked at.. Airfoil aerodynamics (Chapter 8) Sources of Drag (Chapter 8, 11 and 12) –Look at the figures.

Flight Investigations TEXT BOOK CHAPTER 16 PAGE

Speeding up and slowing down f = ma Terminal velocity.

Lecture Leading Cadet Training Principles of Flight 2 Lift and Thrust.

AE 6302 – ELEMENTS OF AERONAUTICS

Airplane Flight: X-Plane in the Classroom Topics Thrust Landing.

Forces of Flight Flight and Space © 2011 Project Lead The Way, Inc.

Aerodynamics Chapter 3 Aerodynamics of Flight.

6.05 Lift Theory of Flight 40 Minutes

Four Forces of Flight Lift Weight Thrust Drag

Aerodynamics The study of the motion of air, particularly when it interacts with a moving object.

Forces of Flight Four Forces of Flight Gateway To Technology

Theory of Flight 6.05 Lift and Drag References:

Forces of Flight.

Matching of Propulsion Systems for an Aircraft

6.04 Laws and Forces References: FTGU pages 21-39

FLIGHT MECHANICS BDA DR. ZAMRI BIN OMAR D

AE 440 Performance Discipline Lecture 9

Forces of Flight Flight and Space © 2011 Project Lead The Way, Inc.

Balanced and Unbalanced Forces

Balance of Forces Hover Lift is equal to weight

Chapter 2 – Thrust and Drag

Questions Laws and Forces, Lift and Drag, Loads and Load Factors

Speeding up and slowing down - Answers

Using and rearranging the lift calculation

How Lift is Created.

Speeding up and slowing down

Introduction to Aeronautical Engineering

Theory of Flight 6.05 Lift and Drag References:

ANGLE-of-ATTACK Proprietary Software Systems, Inc.

Forces of Flight Flight and Space © 2011 Project Lead The Way, Inc.

Presentation transcript:

Civil jet aircraft performance

Four forces of flight Newton’s second law Resulting force perpendicular to the flight path Net thrust from the engines α angle of attack V velocity resulting force parallell to the flight path Newton’s second law

Aerodynamic equations L=Lift = q·S·CL [N] D=Drag = q·S·CD [N] q = dynamic pressure [N/m²] S = reference wing area [m²] CL = coefficient of lift CL = f(α,Re,M) CD = coefficient of drag CD = f(α,Re,M)

Reference wing area The area is considered to extend without interruption through the fuselage and is usually denoted S.

Lift versus angle of attack

The ISA Atmosphere From lecture 5

Equations

Lift equation

Drag equation

Drag polar

High speed drag polar

A flight consists of: Taxi Take off Climb Cruise Descent Approach and landing Diversion to alternate airport?

Cruise For an airplane to be in level, unaccelerated flight, thrust and drag must be equal and opposite, and the lift and weight must be equal and opposite according to the laws of motion, i.e. Lift = Weight = mg Thrust = Drag

Range

Range

Breguet range equation For a preliminary performance analysis is the range equation usually simplified. If we assume flight at constant altitude, M, SFC and L/D the range equation becomes which is frequently called the Breguet range equation

Breguet range equation The Breuget range equation is written directly in terms of SFC. Clearly maximum range for a jetaircraft is not dictated by maximum L/D, but rather the maximum value of the product M(L/D) or V(L/D).

Breuget range equation From the simplified range equation, maximum range is obtained from Flight at maximum Low SFC High altitude, low ρ Carrying a lot of fuel

Range

Endurance Endurance is the amout of time that an aircraft can stay in the air on one given load of fuel

Endurance