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LESSON 3 Significant Aircraft of World War II
LESSON 3 Significant Aircraft of World War II ORREST LEE “WOODY” VOSLER of Lyndonville, Quick Write New York, was a radio operator and gunner during F World War ll. He was the second enlisted member of the Army Air Forces to receive the Medal of Honor. Staff Sergeant Vosler was assigned to a bomb group Time and time again we read about heroic acts based in England. On 20 December 1943, fl ying on his accomplished by military fourth combat mission over Bremen, Germany, Vosler’s servicemen and women B-17 was hit by anti-aircraft fi re, severely damaging it during wartime. After reading the story about and forcing it out of formation. Staff Sergeant Vosler, name Vosler was severely wounded in his legs and thighs three things he did to help his crew survive, which by a mortar shell exploding in the radio compartment. earned him the Medal With the tail end of the aircraft destroyed and the tail of Honor. gunner wounded in critical condition, Vosler stepped up and manned the guns. Without a man on the rear guns, the aircraft would have been defenseless against German fi ghters attacking from that direction. Learn About While providing cover fi re from the tail gun, Vosler was • the development of struck in the chest and face. Metal shrapnel was lodged bombers during the war into both of his eyes, impairing his vision. Able only to • the development of see indistinct shapes and blurs, Vosler never left his post fi ghters during the war and continued to fi re. -
A Nation of Aviation Pioneers
ICAO TIE-INS By Albert Pelsser Romania - A nation of aviation pioneers At the beginning of the 20th century, Romania was among the few nations in the world which brought essential contributions to aviation and flying because there were people who dedicated their life and work to fulfilling the human desire to fly and developing aviation. Among the most well-known inventors who contributed to the flight development by means of apparatuses heavier than the air, Traian Vuia, Aurel Vlaicu and Henri Coanda played a distinct role. In parallel to the above developments, schools of piloting were established and airships from other countries were purchased, with provision for specially designed workshops for the maintenance and repairing of aircraft. The first school of piloting was initiated by the Romanian lawyer Mihail Cerchez, after his return from Paris in the summer of 1909. It started its activity in the spring of 1910, on the field near Chitila, where the first aerodrome of the Romanian aviation was settled. Once the infrastructure for the construction and repair of the airships had been completed, Mihail Cerchez purchased four aircraft from France: two biplane Farman aircraft that were intended to carrying out the training flights of the future pilots, one Demoiselle aircraft and a Wright aircraft for the ground instruction. Second Lieutenants Ştefan Protopopescu and Gheorghe Negrescu were among the first six military pilots trained. Cerchez also obtained that the Farman aircraft be assembled in his workshops. Chitila’s infrastructure in 1911. Farman IV biplane. Having obtained their Pilot Licences in July 2011, Protopopescu and Negrescu, along with other pilots, participated in military maneuvers on Farmans in the fall of 1911 and carried out a series of raids to popularize aviation among youth and to maintain a high degree of readiness among pilots. -
Air Force OA-X Light Attack Aircraft/SOCOM Armed Overwatch Program
Updated March 30, 2021 Air Force OA-X Light Attack Aircraft/SOCOM Armed Overwatch Program On October 24, 2019, the U.S. Air Force issued a final OA-X, its ability to operate with coalition partners, and to request for proposals declaring its intent to acquire a new initially evaluate candidate aircraft. The first phase included type of aircraft. The OA-X light attack aircraft is a small, four aircraft: the Sierra Nevada/Embraer A-29; two-seat turboprop airplane designed for operation in Textron/Beechcraft AT-6B; Air Tractor/L3 OA-802 relatively permissive environments. The announcement of a turboprops, variants of which are in service with other formal program followed a series of Air Force countries; and the developmental Textron Scorpion jet. “experiments” to determine the utility of such an aircraft. First-phase operations continued through August 2017. Following conclusion of the Air Force experiments, the program passed to U.S. Special Operations Command as Figure 1. Sierra Nevada/Embraer A-29 the “Armed Overwatch” program, with a goal of acquiring 75 aircraft. Why Light Attack? During 2018, then-Air Force Secretary Heather Wilson often expressed the purpose of a new light attack aircraft as giving the Air Force an ability to free up more sophisticated and expensive assets for other tasks, citing the example of using high-end F-22 jets to destroy a drug laboratory in Afghanistan as an inefficient use of resources. Per-hour operating costs for light attack aircraft are typically about 2%-4% those of advanced fighters. She and other officials have also noted that the 2018 Source: U.S. -
Concorde Is a Museum Piece, but the Allure of Speed Could Spell Success
CIVIL SUPERSONIC Concorde is a museum piece, but the allure Aerion continues to be the most enduring player, of speed could spell success for one or more and the company’s AS2 design now has three of these projects. engines (originally two), the involvement of Air- bus and an agreement (loose and non-exclusive, by Nigel Moll but signed) with GE Aviation to explore the supply Fourteen years have passed since British Airways of those engines. Spike Aerospace expects to fly a and Air France retired their 13 Concordes, and for subsonic scale model of the design for the S-512 the first time in the history of human flight, air trav- Mach 1.5 business jet this summer, to explore low- elers have had to settle for flying more slowly than speed handling, followed by a manned two-thirds- they used to. But now, more so than at any time scale supersonic demonstrator “one-and-a-half to since Concorde’s thunderous Olympus afterburn- two years from now.” Boom Technology is working ing turbojets fell silent, there are multiple indi- on a 55-seat Mach 2.2 airliner that it plans also to cations of a supersonic revival, and the activity offer as a private SSBJ. NASA and Lockheed Martin appears to be more advanced in the field of busi- are encouraged by their research into reducing the ness jets than in the airliner sector. severity of sonic booms on the surface of the planet. www.ainonline.com © 2017 AIN Publications. All Rights Reserved. For Reprints go to Shaping the boom create what is called an N-wave sonic boom: if The sonic boom produced by a supersonic air- you plot the pressure distribution that you mea- craft has long shaped regulations that prohibit sure on the ground, it looks like the letter N. -
CENTENNIAL: Grand Prairie, Texas 1909-2009
CENTENNIAL: Grand Prairie, Texas 1909-2009 Foreword “Centennial” is a window into the growth and development of Grand Prairie, Texas, USA Compiled from City Documents and Public Records, the information presented is representative of actions and events in the City of Grand Prairie during its first 100 years. Grand Prairie was given its name by the Texas and Pacific Railroad based on its location on the southern edge of a geological region called “Grand Prairie” that is composed of Eagleford Shale stretching from Texas north through the Dakotas and into Canada. Compiled and Written as a Public Service by Katherine L. Houk May 1, 2008 (The author receives no compensation from sales of this book) CENTENNIAL: Grand Prairie, Texas 1909-2009 CENTENNIAL 2009! 100 YEARS OF GROWTH—GRAND PRAIRIE, TEXAS FOREWORD CHAPTER 1 GRAND PRAIRIE TODAY CHAPTER 2 THE CITY: 1980-2000 CHAPTER 3 THE CITY: 1960-1980 CHAPTER 4 THE CITY: 1940-1960 CHAPTER 5 THE CITY: 1920-1940 CHAPTER 6 THE CITY: 1909-1920 CHAPTER 7 PRE-1909 CENTENNIAL: Grand Prairie, Texas 1909-2009 CHAPTER 1: 2000-2009 GRAND PRAIRIE TODAY Grand Prairie, Texas, is celebrating its 100th birthday as an incor- porated city in 2009. With a population approaching 170,000 people, the city is no longer a stagecoach stop between Dallas and Fort Worth. In fact, Grand Prairie is the 7th largest city in North Central Texas, enjoying an international economy, with a tax base in excess of $10 Billion. In 2007, the City was the 6th fastest growing municipality in the United States. More than 20% of single family homes have no mortgage. -
2019 Centennial Report
100YEARS INDEFENSE OFFREEDOM CENTENNIALREPORT In 1920—just after World War I—a small group of people met in a Beacon Home of ACLU of Massachusetts co-founder Hill home to resist a widespread government clampdown on immigrants, Margaret Shurcliff | Boston anti-war dissenters, and labor organizers. These Bay Staters joined the call Carol Rose, executive director at the ACLU of of Massachusetts-born ACLU founder Roger Baldwin. Together, they formed Massachusetts, stands outside the historic residence where a small group of activists the Civil Liberties Union of Massachusetts—the first ACLU state affiliate in founded the organization in 1920. the nation. The ACLU has always been rooted in courage and guided by a vision: to extend the promise of civil rights and civil liberties to all people. In 1920, the U.S. Supreme Court had yet to uphold a single free speech claim. So- called radicals were rounded up and deported in droves. Activists languished in jail for distributing anti-war literature and for promoting contraception and equal rights. Women won the right to vote just that year, and the Voting Rights Act was decades away. Equal rights for LGBTQ people were unthinkable. And yet, the ACLU dared to envision how, by standing together in support of civil rights and civil liberties, we could create a more just and equitable nation for all. Much has changed in the last century—but our role has not. For 100 years, the ACLU has been the leading defender of freedom here in Massachusetts and nationwide. The ACLU has grown from a small group of idealists to a vast resistance movement. -
Critical Mach Number, Transonic Area Rule
Critical Mach number - Compressibility Effects on Lift The design parameter that influences compressibility effects on lift is the Critical Mach number (Mcr). This is the free stream Mach number when sonic conditions (M = 1) is reached at some point on the airfoil surface The figure illustrates the same airfoil, at the same angle of attack at different free stream Mach numbers leading to the definition of the critical Mach number The critical Mach number can be obtained through the curve for the minimum pressure coefficient as a function of Mach number. It can be determined through the intersection of the two equations The lift coefficient correction for compressibility is The figure above illustrates that If you plan to fly at high free stream Mach number, you airfoil should be thin to (a) increase your critical Mach number as this will keep your drag rise small This will also result in lower minimum pressure: Therefore your lift coefficient will decrease Note that the minimum pressure coefficient on thick airfoil is high; this means that the velocity is also correspondingly high. Therefore the critical Mach number is reached for lower value of the free stream Mach number. Swept wing A B-52 Stratofortress showing wing with a large sweepback angle. A swept wing is a wing planform favored for high subsonic jet speeds first investigated in Germany from 1935 onwards until the end of the Second World War. Since the introduction of the MiG-15 and North American F-86 which demonstrated a decisive superiority over the slower first generation of straight-wing jet fighters during the Korean War, swept wings have become almost universal on all but the slowest jets (such as the A- 10). -
Air Force Airframe and Powerplant (A&P) Certification Program
Air Force Airframe and Powerplant (A&P) Certification Program Introduction: Most military aircraft maintenance technicians are eligible to pursue the Federal Aviation Administration (FAA) Airframe & Powerplant (A&P) certification based on documented evidence of 30 months practical aircraft maintenance experience in airframe and powerplant systems per Title 14, Code of Federal Regulations (CFR), Part 65- Certification: Airmen Other Than Flight Crew Members; Subpart D-Mechanics. Air Force education, training and experience and FAA eligibility requirements per Title 14, CFR Part 65.77. This FAA-approved program is a voluntary program which benefits the technician and the Air Force, with consideration to professional development, recruitment, retention, and transition. Completing this program, outlined in the program Qualification Training Package (QTP), will assist technicians in meeting FAA eligibility requirements and being better-prepared for the FAA exams. Three-Tier Program: The program is a three-tier training and experience program. These elements are required for program completion and are important for individual development, knowledge assessment, meeting FAA certification eligibility, and preparation for the FAA exams: Three Online Courses (02AF1-General, 02AF2-Airframe, & 02AF3-Powerplant). On the Job Training (OJT) Qualification Training Package(QTP). Documented evidence of 30 months practical experience in airframe and powerplant systems. Program Eligibility: Active duty, guard and reserve technicians who possess at least a 5-skill level in one of the following aircraft maintenance AFSCs are eligible to enroll: 2A0X1, 2A090, 2A2X1, 2A2X2, 2A2X3, 2A3X3, 2A3X4, 2A3X5, 2A3X7, 2A3X8, 2A390, 2A300, 2A5X1, 2A5X2, 2A5X3, 2A5X4, 2A590, 2A500, 2A6X1, 2A6X3, 2A6X4, 2A6X5, 2A6X6, 2A690, 2A691, 2A600 (except AGE), 2A7X1, 2A7X2, 2A7X3, 2A7X5, 2A790, 2A8X1, 2A8X2, 2A9X1, 2A9X2, and 2A9X3. -
Global Military Helicopters 2015-16 Market Report Contents
GLOBAL MILITARY HELICOPTERS 2015-16 MARKET REPORT CONTENTS MARKET OVERVIEW 2 MILITARY HELICOPTER KEY REQUIREMENTS 4 EUROPE 5 NORTH AMERICA 10 LATIN AMERICA & THE CARIBBEAN 12 AFRICA 15 ASIA-PACIFIC 16 MIDDLE EAST 21 WORLD MILITARY HELICOPTER HOLDINGS 23 EUROPE 24 NORTH AMERICA 34 LATIN AMERICA & THE CARIBBEAN 36 AFRICA 43 ASIA-PACIFIC 49 MIDDLE EAST 59 EVENT INFORMATION 65 Please note that all information herein is subject to change. Defence IQ endeavours to ensure accuracy wherever possible, but errors are often unavoidable. We encourage readers to contact us if they note any need for amendments or updates. We accept no responsibility for the use or application of this information. We suggest that readers contact the specific government and military programme offices if seeking to confirm the reliability of any data. 1 MARKET OVERVIEW Broadly speaking, the global helicopter market is currently facing a two- pronged assault. The military helicopter segment has been impacted significantly by continued defense budgetary pressures across most traditional markets, and a recent slide in global crude oil prices has impacted the demand for new civil helicopters as well as the level of activity for existing fleets engaged in the offshore oil & gas exploration sector. This situation has impacted industry OEMs significantly, many of which had been working towards strengthening the civil helicopter segment to partially offset the impact of budgetary cuts on the military segment. However, the medium- to long-term view of the market is promising given the presence of strong fundamentals and persistent, sustainable growth drivers. The market for military helicopters in particular is set to cross a technological threshold in the form of next-generation compound helicopters and tilt rotorcraft. -
Development of Modern Control Laws for the AH-64D in Hover/Low Speed Flight
Development of Modern Control Laws for the AH-64D in Hover/Low Speed Flight Jeffrey W. Harding 1 Scott J. Moody Geoffrey J. Jeram 2 Aviation Engineering Directorate U.S. Army Aviation and Missile Research, Development, and Engineering Center Redstone Arsenal, Alabama M. Hossein Mansur 3 Mark B. Tischler Aeroflightdynamics Directorate U.S. Army Aviation and Missile Research, Development, and Engineering Center Moffet Field, California ABSTRACT Modern control laws are developed for the AH-64D Longbow Apache to provide improved handling qualities for hover and low speed flight in a degraded visual environment. The control laws use a model following approach to generate commands for the existing partial authority stability augmentation system (SAS) to provide both attitude command attitude hold and translational rate command response types based on the requirements in ADS-33E. Integrated analysis tools are used to support the design process including system identification of aircraft and actuator dynamics and optimization of design parameters based on military handling qualities and control system specifications. The purpose is to demonstrate the potential for improving the low speed handling qualities of existing Army helicopters with partial authority SAS actuators through flight control law modifications as an alternative to a full authority, fly-by-wire, control system upgrade. NOTATION INTRODUCTION ACAH attitude command attitude hold The AH-64 Apache was designed in the late 70’s and went DH direction hold into service as the US Army’s most advanced day, night DVE degraded visual environment and adverse weather attack helicopter in 1986. The flight HH height hold control system was designed to meet the relevant handling HQ handling qualities qualities requirements based on MIL-F-8501 (Ref. -
Air Force Next-Generation Bomber: Background and Issues for Congress
Air Force Next-Generation Bomber: Background and Issues for Congress Jeremiah Gertler Specialist in Military Aviation December 22, 2009 Congressional Research Service 7-5700 www.crs.gov RL34406 CRS Report for Congress Prepared for Members and Committees of Congress Air Force Next-Generation Bomber: Background and Issues for Congress Summary As part of its proposed FY2010 defense budget, the Administration proposed deferring the start of a program to develop a next-generation bomber (NGB) for the Air Force, pending the completion of the 2010 Quadrennial Defense Review (QDR) and associated Nuclear Posture Review (NPR), and in light of strategic arms control negotiations with Russia. The Administration’s proposed FY2010 budget requested no funding specifically identified in public budget documents as being for an NGB program. Prior to the submission of the FY2010 budget, the Air Force was conducting research and development work aimed at fielding a next-generation bomber by 2018. Although the proposed FY2010 defense budget proposed deferring the start of an NGB program, the Secretary of Defense and Air Force officials in 2009 have expressed support for the need to eventually start such a program. The Air Force’s FY2010 unfunded requirements list (URL)—a list of programs desired by the Air Force but not funded in the Air Force’s proposed FY2010 budget—includes a classified $140-million item that some press accounts have identified as being for continued work on a next-generation bomber. FY2010 defense authorization bill: The conference report (H.Rept. 111-288 of October 7, 2009) on the FY2010 defense authorization act (H.R. -
Faa Ac 20-186
U.S. Department Advisory of Transportation Federal Aviation Administration Circular Subject: Airworthiness and Operational Date: 7/22/16 AC No: 20-186 Approval of Cockpit Voice Recorder Initiated by: AFS-300 Change: Systems 1 GENERAL INFORMATION. 1.1 Purpose. This advisory circular (AC) provides guidance for compliance with applicable regulations for the airworthiness and operational approval for required cockpit voice recorder (CVR) systems. Non-required installations may use this guidance when installing a CVR system as a voluntary safety enhancement. This AC is not mandatory and is not a regulation. This AC describes an acceptable means, but not the only means, to comply with Title 14 of the Code of Federal Regulations (14 CFR). However, if you use the means described in this AC, you must conform to it in totality for required installations. 1.2 Audience. We, the Federal Aviation Administration (FAA), wrote this AC for you, the aircraft manufacturers, CVR system manufacturers, aircraft operators, Maintenance Repair and Overhaul (MRO) Organizations and Supplemental Type Certificate (STC) applicants. 1.3 Cancellation. This AC cancels AC 25.1457-1A, Cockpit Voice Recorder Installations, dated November 3, 1969. 1.4 Related 14 CFR Parts. Sections of 14 CFR parts 23, 25, 27, 29, 91, 121, 125, 129, and 135 detail design substantiation and operational approval requirements directly applicable to the CVR system. See Appendix A, Flowcharts, to determine the applicable regulations for your aircraft and type of operation. Listed below are the specific 14 CFR sections applicable to this AC: • Part 23, § 23.1457, Cockpit Voice Recorders. • Part 23, § 23.1529, Instructions for Continued Airworthiness.