US WWII FIGHTER Early Lightnings 1174
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Glider Handbook, Chapter 2: Components and Systems
Chapter 2 Components and Systems Introduction Although gliders come in an array of shapes and sizes, the basic design features of most gliders are fundamentally the same. All gliders conform to the aerodynamic principles that make flight possible. When air flows over the wings of a glider, the wings produce a force called lift that allows the aircraft to stay aloft. Glider wings are designed to produce maximum lift with minimum drag. 2-1 Glider Design With each generation of new materials and development and improvements in aerodynamics, the performance of gliders The earlier gliders were made mainly of wood with metal has increased. One measure of performance is glide ratio. A fastenings, stays, and control cables. Subsequent designs glide ratio of 30:1 means that in smooth air a glider can travel led to a fuselage made of fabric-covered steel tubing forward 30 feet while only losing 1 foot of altitude. Glide glued to wood and fabric wings for lightness and strength. ratio is discussed further in Chapter 5, Glider Performance. New materials, such as carbon fiber, fiberglass, glass reinforced plastic (GRP), and Kevlar® are now being used Due to the critical role that aerodynamic efficiency plays in to developed stronger and lighter gliders. Modern gliders the performance of a glider, gliders often have aerodynamic are usually designed by computer-aided software to increase features seldom found in other aircraft. The wings of a modern performance. The first glider to use fiberglass extensively racing glider have a specially designed low-drag laminar flow was the Akaflieg Stuttgart FS-24 Phönix, which first flew airfoil. -
Problems of High Speed and Altitude Robert Stengel, Aircraft Flight Dynamics MAE 331, 2018
12/14/18 Problems of High Speed and Altitude Robert Stengel, Aircraft Flight Dynamics MAE 331, 2018 Learning Objectives • Effects of air compressibility on flight stability • Variable sweep-angle wings • Aero-mechanical stability augmentation • Altitude/airspeed instability Flight Dynamics 470-480 Airplane Stability and Control Chapter 11 Copyright 2018 by Robert Stengel. All rights reserved. For educational use only. http://www.princeton.edu/~stengel/MAE331.html 1 http://www.princeton.edu/~stengel/FlightDynamics.html Outrunning Your Own Bullets • On Sep 21, 1956, Grumman test pilot Tom Attridge shot himself down, moments after this picture was taken • Test firing 20mm cannons of F11F Tiger at M = 1 • The combination of events – Decay in projectile velocity and trajectory drop – 0.5-G descent of the F11F, due in part to its nose pitching down from firing low-mounted guns – Flight paths of aircraft and bullets in the same vertical plane – 11 sec after firing, Attridge flew through the bullet cluster, with 3 hits, 1 in engine • Aircraft crashed 1 mile short of runway; Attridge survived 2 1 12/14/18 Effects of Air Compressibility on Flight Stability 3 Implications of Air Compressibility for Stability and Control • Early difficulties with compressibility – Encountered in high-speed dives from high altitude, e.g., Lockheed P-38 Lightning • Thick wing center section – Developed compressibility burble, reducing lift-curve slope and downwash • Reduced downwash – Increased horizontal stabilizer effectiveness – Increased static stability – Introduced -
Preliminary Horizontal and Vertical Stabilizer Design, Longitudinal and Directional Static Stability
MSD : SAE Aero Aircraft Design & Build Preliminary Horizontal and Vertical Stabilizer Design, Longitudinal and Directional Static Stability Horizontal Stabilizer Parameters: 1. Ratio of horizontal tail-wing aerodynamic centers distance with respect to fuselage length 푙푎푐 /푙푓 2. Overall fuselage length 푙푓 3. Horizontal tail-wing aerodynamic centers distance 푙푎푐 4. Horizontal tail volume coefficient 푉퐻 5. Center of gravity location 푥푐푔 6. Horizontal tail arm 푙푡 7. Horizontal tail planform area 푆푡 8. Horizontal tail airfoil 9. Horizontal tail aspect ratio 퐴푅푡 10. Horizontal tail taper ratio 휆푡 11. Additional geometric parameters (Sweep Angle, Twist Angle, Dihedral) 12. Incidence Angle 푖푡 13. Neutral Point 푥푁푃 14. Static Margin 15. Overall Horizontal Stabilizer Geometry 16. Overall Aircraft Static Longitudinal Stability 17. Elevator (TBD in Control Surfaces Design) Vertical Stabilizer Parameters: 18. Vertical tail volume coefficient 푉푣 19. Vertical tail arm 푙푣 20. Vertical tail planform area 푆푉 21. Vertical tail aspect ratio 퐴푅푣 22. Vertical tail span 푏푣 23. Vertical tail sweep angle Λ푣 24. Vertical tail minimum lift curve slope 퐶 퐿훼 푣 25. Vertical tail airfoil 26. Overall Vertical Stabilizer Geometry 27. Overall Aircraft Static Direction Stability 28. Rudder (TBD in Control Surfaces Design) 1. l/Lf Ratio: 0.6 The table below shows statistical ratios between the distance between the wing aerodynamic center and the horizontal tail aerodynamic center 푙푎푐 with respect to the overall fuselage length (Lf). 2. Fuselage Length (Lf): 60.00 in Choosing this value is an iterative process to meet longitudinal and vertical static stability, internal storage, and center of gravity requirements, but preliminarily choose 푙푓 = 60.00 푖푛 3. -
P-38 Lightning
P-38 Lightning P-38 Lightning Type Heavy fighter Manufacturer Lockheed Designed by Kelly Johnson Maiden flight 27 January 1939 Introduction 1941 Retired 1949 Primary user United States Army Air Force Produced 1941–45 Number built 10,037[1] Unit cost US$134,284 when new[2] Variants Lockheed XP-49 XP-58 Chain Lightning The Lockheed P-38 Lightning was a World War II American fighter aircraft. Developed to a United States Army Air Corps requirement, the P-38 had distinctive twin booms with forward-mounted engines and a single, central nacelle containing the pilot and armament. The aircraft was used in a number of different roles, including dive bombing, level bombing, ground strafing, photo reconnaissance missions,[3] and extensively as a long-range escort fighter when equipped with droppable fuel tanks under its wings. The P-38 was used most extensively and successfully in the Pacific Theater of Operations and the China-Burma-India Theater of Operations, where it was flown by the American pilots with the highest number of aerial victories to this date. The Lightning called "Marge" was flown by the ace of aces Richard Bong who earned 40 victories. Second with 38 was Thomas McGuire in his aircraft called "Pudgy". In the South West Pacific theater, it was a primary fighter of United States Army Air Forces until the appearance of large numbers of P-51D Mustangs toward the end of the war. [4][5] 1 Design and development Lockheed YP-38 (1943) Lockheed designed the P-38 in response to a 1937 United States Army Air Corps request for a high- altitude interceptor aircraft, capable of 360 miles per hour at an altitude of 20,000 feet, (580 km/h at 6100 m).[6] The Bell P-39 Airacobra and the Curtiss P-40 Warhawk were also designed to meet the same requirements. -
Chapter 55 Stabilizers
EXTRA - FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 200 Chapter 55 Stabilizers PAGE DATE: 1. July 1996 CHAPTER 55 PAGE 1 EXTRA - FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 200 Table of Contents Chapter Title 55-00-00 GENERAL . 3 55-21-00 MAINTENANCE PRACTICES . 8 55-21-01 Horizontal Stabilizer . 8 55-21-02 Vertical Stabilizer . 10 PAGE DATE: 1. July 1996 CHAPTER 55 PAGE 2 EXTRA - FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 200 55-00-00 GENERAL The EXTRA 200 has a conventional empennage with stabilizers and moveable control surfaces. The spars con- sist of carbon roving caps, carbon fibre webs and PVC foam cores. The shells are built of honeycomb sandwich with glass fibre or optional carbon fibre laminate. Also buckling is prevented by plywood ribs. Deviating from this, the elevator is constructed in the same manner as the ailerons (refer to Chapter 57). On the R/H elevator half a trim tab is fitted with a piano hinge. The layer sequences of the stabilizers, the elevator and the rudder are shown in Figures 1-2. All composite parts, as protection against moisture and UV radiation, are coated with an unsaturated polyester gel- coat, an acrylic filler and finally with an acrylic paint. For repair of composite parts refer to Chapter 51. PAGE DATE: 1. July 1996 CHAPTER 55 PAGE 3 EXTRA - FLUGZEUGBAU GmbH GENERAL SERVICE MANUAL EXTRA 200 Layer Sequence Horizontal Tail Figure 1, Sheet 1 PAGE DATE: 1. July 1996 CHAPTER 55 PAGE 4 EXTRA - FLUGZEUGBAU GmbH GENERAL SERVICE MANUAL EXTRA 200 Layer Sequence Horizontal Tail Figure 1, Sheet 2 PAGE DATE: 1. -
Honoring a Legacy of Peace
Historic Ford Island | 319 Lexington Blvd. | Honolulu, HI 96818 Non Profit Organization U.S. Postage PAID Honolulu, HI Permit No. 1633 For more information please visit our website www.PearlHarborAviationMuseum.org NOTAMNotice to Airmen PEARL HARBOR AVIATION MUSEUM • FORD ISLAND, HI FALL 2020 | ISSUE #42 Honoring a Legacy of Peace “To them, we have a solemn obligation to ensure that their sacrifice will help to make this a better and safer world in which to live.” — Admiral Chester Nimitz 2019 Annual Report Included EXECUTIVE DIRECTOR’S REPORT TARGETING PBYS ON DECEMBER 7, 1941 By Rod Bengston, Director of Exhibits, Restoration, & Curatorial Services We are entering our 9th month of restricted or absent visitation in response to the COVID pandemic. Who could have predicted this horrific loss of human life and the utter worldwide disruption to our lives? Throughout these challenging times, there have been stories of heroism at every level – from front line workers giving their all to combat the spread of this disease to voices of children sharing their hope in the face of tragedy. In our last NOTAM, we considered how museums and other institutions might come together to shed some light and perhaps pioneer alternate forms of engagement and learning. After all, there is no set of instructions on how we move forward. “Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it’s the only thing that ever has.” — Margaret Mead We hope our virtual and in-person programs have reduced the isolation many experience daily. In the midst of these trying times, Hawaii hosted our nation’s 75th WWII Commemoration, celebrating the hope and peace that followed the end of this global conflict. -
A Historical Overview of Flight Flutter Testing
tV - "J -_ r -.,..3 NASA Technical Memorandum 4720 /_ _<--> A Historical Overview of Flight Flutter Testing Michael W. Kehoe October 1995 (NASA-TN-4?20) A HISTORICAL N96-14084 OVEnVIEW OF FLIGHT FLUTTER TESTING (NASA. Oryden Flight Research Center) ZO Unclas H1/05 0075823 NASA Technical Memorandum 4720 A Historical Overview of Flight Flutter Testing Michael W. Kehoe Dryden Flight Research Center Edwards, California National Aeronautics and Space Administration Office of Management Scientific and Technical Information Program 1995 SUMMARY m i This paper reviews the test techniques developed over the last several decades for flight flutter testing of aircraft. Structural excitation systems, instrumentation systems, Maximum digital data preprocessing, and parameter identification response algorithms (for frequency and damping estimates from the amplltude response data) are described. Practical experiences and example test programs illustrate the combined, integrated effectiveness of the various approaches used. Finally, com- i ments regarding the direction of future developments and Ii needs are presented. 0 Vflutte r Airspeed _c_7_ INTRODUCTION Figure 1. Von Schlippe's flight flutter test method. Aeroelastic flutter involves the unfavorable interaction of aerodynamic, elastic, and inertia forces on structures to and response data analysis. Flutter testing, however, is still produce an unstable oscillation that often results in struc- a hazardous test for several reasons. First, one still must fly tural failure. High-speed aircraft are most susceptible to close to actual flutter speeds before imminent instabilities flutter although flutter has occurred at speeds of 55 mph on can be detected. Second, subcritical damping trends can- home-built aircraft. In fact, no speed regime is truly not be accurately extrapolated to predict stability at higher immune from flutter. -
Wing, Fuselage and Tail • Mainplane: Airfoil Cross-Section Shape, Taper Ratio Selection, Sweep Angle Selection, Wing Drag Estimation
Design Of Structural Components - Wing, Fuselage and Tail • Mainplane: Airfoil cross-section shape, taper ratio selection, sweep angle selection, wing drag estimation. Spread sheet for wing design. • Fuselage: Volume consideration, quantitative shapes, air inlets, wing attachments; Aerodynamic considerations and drag estimation. Spread sheets. • Tail arrangements: Horizontal and vertical tail sizing. Tail planform shapes. Airfoil selection type. Tail placement. Spread sheets for tail design Main Wing Design 1. Introduction: Airfoil Geometry: • Wing is the main lifting surface of the aircraft. • Wing design is the next logical step in the conceptual design of the aircraft, after selecting the weight and the wing-loading that match the mission requirements. • The design of the wing consists of selecting: i) the airfoil cross-section, ii) the average (mean) chord length, iii) the maximum thickness-to-chord ratio, iv) the aspect ratio, v) the taper ratio, and Wing Geometry: vi) the sweep angle which is defined for the leading edge (LE) as well as the trailing edge (TE) • Another part of the wing design involves enhanced lift devices such as leading and trailing edge flaps. • Experimental data is used for the selection of the airfoil cross-section shape. • The ultimate “goals” for the wing design are based on the mission requirements. • In some cases, these goals are in conflict and will require some compromise. Main Wing Design (contd) 2. Airfoil Cross-Section Shape: • Effect of ( t c ) max on C • The shape of the wing cross-section determines lmax for a variety of the pressure distribution on the upper and lower 2-D airfoil sections is surfaces of the wing. -
[PDF Download] Dick Bong, Ace of Aces Online Ebook
[PDF Download] Dick Bong, Ace of Aces Online eBook Book details: Author: George C Kenney Format: 123 pages Dimensions: 152.4 x 228.6mm Publication date: 01 Dec 1981 Publisher: Zenger Publishing Company, Incorporated Release location: United States Language: English Plot: Richard I. Bong - Biography of America's Top Ace in … Major Richard I. Bong Top American Ace of World War Two. By Stephen Sherman, June, 1999.Updated June 28, 2011. R ichard Ira Bong, who would become America's "Ace of Aces," was born on September 24, 1920, the son of a Swedish immigrant. He grew up on a farm near the small town of Poplar, Wisconsin. Dick did well in high … Richard "Dick" Bong P-38 Lightning Richard Ira "Dick" Bong America's "Ace of Aces" 24 SEP 1920 / 6 AUG 1945 People have asked us on occasion why we chose this picture of Dick Bong to highlight the page, rather than the more famous one of him sitting in the cockpit of his P‑38. Richard Ira Bong: American World War II Ace of Aces Richard Ira Bong shot down 40 Japanese aircraft and "ruled the air from New Guinea to the Philippines" on his way to becoming America's Ace of Aces. Richard Bong: World War II Flying Ace (Badger … Richard Bong: World War II Flying Ace (Badger Biographies Series) [Pete Barnes] on Amazon.com. *FREE* shipping on qualifying offers. Who would have imagined a farm boy from Wisconsin would be the greatest air hero of World War II? Richard Bong was an athletic and hard-working boy from northern Wisconsin who dreamed of flying from the … P-38 Lightning Aces There are many excellent books written about WWII Aces. -
Up from Kitty Hawk Chronology
airforcemag.com Up From Kitty Hawk Chronology AIR FORCE Magazine's Aerospace Chronology Up From Kitty Hawk PART ONE PART TWO 1903-1979 1980-present 1 airforcemag.com Up From Kitty Hawk Chronology Up From Kitty Hawk 1903-1919 Wright brothers at Kill Devil Hill, N.C., 1903. Articles noted throughout the chronology provide additional historical information. They are hyperlinked to Air Force Magazine's online archive. 1903 March 23, 1903. First Wright brothers’ airplane patent, based on their 1902 glider, is filed in America. Aug. 8, 1903. The Langley gasoline engine model airplane is successfully launched from a catapult on a houseboat. Dec. 8, 1903. Second and last trial of the Langley airplane, piloted by Charles M. Manly, is wrecked in launching from a houseboat on the Potomac River in Washington, D.C. Dec. 17, 1903. At Kill Devil Hill near Kitty Hawk, N.C., Orville Wright flies for about 12 seconds over a distance of 120 feet, achieving the world’s first manned, powered, sustained, and controlled flight in a heavier-than-air machine. The Wright brothers made four flights that day. On the last, Wilbur Wright flew for 59 seconds over a distance of 852 feet. (Three days earlier, Wilbur Wright had attempted the first powered flight, managing to cover 105 feet in 3.5 seconds, but he could not sustain or control the flight and crashed.) Dawn at Kill Devil Jewel of the Air 1905 Jan. 18, 1905. The Wright brothers open negotiations with the US government to build an airplane for the Army, but nothing comes of this first meeting. -
ACE BIRTHDAYS JOIN the FRIENDS of the AMERICAN FIGHTER ACES MAY - JULY (Auxiliary of the American Fighter Aces Association)
American Fighter Aces and Friends The Bulletin of the American Fighter Aces Association April 2018 | Volume 35, No 2 Dick Fleischer: Thunderbolt Over New Guinea Association President's Message Dear Aces, Friends, Survivors, and Honorees: Our Ace's Association was founded in 1960, recognizing the 1450 combat pilots that qualified as Aces for action in World War I, WW II. Korea and Vietnam. In individual combat they contributed to the security of our country in times of war. Since that day, membership in the Association has continued to inspire patriotism and set a high example for our youth in America. Our mission each year is to remind our public of the commitment the pilots had, to remain confident and courageous. It seemed to always be one on one or against the odds, playing the hand they were dealt. Betting it all. The Association's commitment transcends time and continues to be the direction we want to go. I have a large number of helpers in getting the Association's day's work done and I owe many a "Thank You" for their efforts. The Board of Directors officers give continually of their time on com- mittees and are joined by Friends and volunteers to participate in study groups. In order to continue our mission of the future as an educational organization a few changes will have to be made and will require help of some strong donors to get good results. I encourage our Friends of the AFAA to help us in advice, suggestions and recruited a larger membership for support. -
Richard I. Bong: Remembering Wisconsin's 'Ace of Aces' | Local
Richard I. Bong: Remembering Wisconsinʼs 'Ace of Aces' | Local News | journaltimes.com 5/30/20, 812 AM Richard I. Bong: Remembering Wisconsin’s 'Ace of Aces' Eric Johnson May 25, 2020 SALE! Subscribe for $1/mo. Richard I. Bong: Remembering WisconsinʼsSHARE THIS 'Ace 4 of comments Aces' Then Capt. RicharD I. BonG, a Wisconsin farm boy turneD American fighter pilot with the 5th Air Force, neeDeD one more score to tie the American shootinG down of enemy plane record set by record of Eddie Rickenbacker, when this photo was taken on March 30, 1944. https://journaltimes.com/news/local/richard-i-bong-remembering-wis…f.html?utm_medium=social&utm_source=email&utm_campaign=user-share Page 2 of 15 Richard I. Bong: Remembering Wisconsinʼs 'Ace of Aces' | Local News | journaltimes.com 5/30/20, 812 AM ASSOCIATED PRESS file photo ENOSHA COUNTY — As the nation pauses to solemnly honor its fallen K military heroes on Memorial Day, few names in Wisconsin are more revered than that of Poplar native U.S. Army Air Force Major Richard Ira Bong, one of America’s most decorated World War II fighter pilots. The country’s “Ace of Aces” with 40 downed enemy aircraft “kill” victories in Pacific Theater aerial combat action, Bong is widely revered as America’s all- time highest-scoring fighter pilot. Said to be “quiet, shy and introverted on the ground,” in the cockpit Bong was anything but, described as “aggressive, hostile and fearless in the air.” Known for his penchant for taking on his aerial enemies in head-on duels that logged at least 16 of his 40 aerial kills, Bong was famously noted as telling his squadron mates that the secret to his success was his strategy of getting close enough to his enemy to “put the gun muzzle in the..