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Pitot-Static System Blockage Effects on Airspeed Indicator
The Dramatic Effects of Pitot-Static System Blockages and Failures by Luiz Roberto Monteiro de Oliveira . Table of Contents I ‐ Introduction…………………………………………………………………………………………………………….1 II ‐ Pitot‐Static Instruments…………………………………………………………………………………………..3 III ‐ Blockage Scenarios – Description……………………………..…………………………………….…..…11 IV ‐ Examples of the Blockage Scenarios…………………..……………………………………………….…15 V ‐ Disclaimer………………………………………………………………………………………………………………50 VI ‐ References…………………………………………………………………………………………….…..……..……51 Please also review and understand the disclaimer found at the end of the article before applying the information contained herein. I - Introduction This article takes a comprehensive look into Pitot-static system blockages and failures. These typically affect the airspeed indicator (ASI), vertical speed indicator (VSI) and altimeter. They can also affect the autopilot auto-throttle and other equipment that relies on airspeed and altitude information. There have been several commercial flights, more recently Air France's flight 447, whose crash could have been due, in part, to Pitot-static system issues and pilot reaction. It is plausible that the pilot at the controls could have become confused with the erroneous instrument readings of the airspeed and have unknowingly flown the aircraft out of control resulting in the crash. The goal of this article is to help remove or reduce, through knowledge, the likelihood of at least this one link in the chain of problems that can lead to accidents. Table 1 below is provided to summarize -
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. -
Airspeed Indicator Calibration
TECHNICAL GUIDANCE MATERIAL AIRSPEED INDICATOR CALIBRATION This document explains the process of calibration of the airspeed indicator to generate curves to convert indicated airspeed (IAS) to calibrated airspeed (CAS) and has been compiled as reference material only. i Technical Guidance Material BushCat NOSE-WHEEL AND TAIL-DRAGGER FITTED WITH ROTAX 912UL/ULS ENGINE APPROVED QRH PART NUMBER: BCTG-NT-001-000 AIRCRAFT TYPE: CHEETAH – BUSHCAT* DATE OF ISSUE: 18th JUNE 2018 *Refer to the POH for more information on aircraft type. ii For BushCat Nose Wheel and Tail Dragger LSA Issue Number: Date Published: Notable Changes: -001 18/09/2018 Original Section intentionally left blank. iii Table of Contents 1. BACKGROUND ..................................................................................................................... 1 2. DETERMINATION OF INSTRUMENT ERROR FOR YOUR ASI ................................................ 2 3. GENERATING THE IAS-CAS RELATIONSHIP FOR YOUR AIRCRAFT....................................... 5 4. CORRECT ALIGNMENT OF THE PITOT TUBE ....................................................................... 9 APPENDIX A – ASI INSTRUMENT ERROR SHEET ....................................................................... 11 Table of Figures Figure 1 Arrangement of instrument calibration system .......................................................... 3 Figure 2 IAS instrument error sample ........................................................................................ 7 Figure 3 Sample relationship between -
Sept. 12, 1950 W
Sept. 12, 1950 W. ANGST 2,522,337 MACH METER Filed Dec. 9, 1944 2 Sheets-Sheet. INVENTOR. M/2 2.7aar alwg,57. A77OAMA). Sept. 12, 1950 W. ANGST 2,522,337 MACH METER Filed Dec. 9, 1944 2. Sheets-Sheet 2 N 2 2 %/ NYSASSESSN S2,222,W N N22N \ As I, mtRumaIII-m- III It's EARAs i RNSITIE, 2 72/ INVENTOR, M247 aeawosz. "/m2.ATTORNEY. Patented Sept. 12, 1950 2,522,337 UNITED STATES ; :PATENT OFFICE 2,522,337 MACH METER Walter Angst, Manhasset, N. Y., assignor to Square D Company, Detroit, Mich., a corpora tion of Michigan Application December 9, 1944, Serial No. 567,431 3 Claims. (Cl. 73-182). is 2 This invention relates to a Mach meter for air plurality of posts 8. Upon one of the posts 8 are craft for indicating the ratio of the true airspeed mounted a pair of serially connected aneroid cap of the craft to the speed of sound in the medium sules 9 and upon another of the posts 8 is in which the aircraft is traveling and the object mounted a diaphragm capsuler it. The aneroid of the invention is the provision of an instrument s: capsules 9 are sealed and the interior of the cas-l of this type for indicating the Mach number of an . ing is placed in communication with the static aircraft in fight. opening of a Pitot static tube through an opening The maximum safe Mach number of any air in the casing, not shown. The interior of the dia craft is the value of the ratio of true airspeed to phragm capsule is connected through the tub the speed of sound at which the laminar flow of ing 2 to the Pitot or pressure opening of the Pitot air over the wings fails and shock Waves are en static tube through the opening 3 in the back countered. -
Junkers G 38 Aerophilatelie
Katalog und Handbuch zu den Flügen der JUNKERS G 38 D-2000 und D-2500 Hubertus Hentschel Siemensstraße 10 40670 Meerbusch Tel. 02159 - 3084 FAX 02159 – 51808 eMail: [email protected] Die Junkers Ganzmetallflugzeuge G 38 Junkers G 38 D-2000 ( AZUR ) Werknummer 3301 G 38 di 06.11.29 JUNKERS D-2000 07.05.31 LUFT HANSA D-2000 06.07.33 DEUTSCHLAND D-2000 20.03.34 DEUTSCHLAND D-AZUR Besatzung Flugkapitän : Wilhelm Zimmermann * 24.02.1897 + 29.03.1956 2. Flugzeugf. : Otto Brauer * 16.10.1897 + 16.04.1976 : Paul Dierberg : Hans Etzold Steward : Arthur Howe Konstrukteure : Hugo Junkers * 03.02.1859 + 03.02.1935 : Ernst Zindel * 21.03.1897 + 10.10.1978 Passagiere : 9 Sitzplätze, 4 Liegeplätze : nach dem Umbau 30 Sitzplätze Junkers G 38 D-2500 ( APIS ) Werknummer 3302 G 38 ce, G 38 ci, G 38 fi 14.06.32 LUFT-HANSA D-2500 00.00.33 HINDENBURG D-2500 29.04.33 GENERALFELDMARSCHALL VON HINDENBURG D-2500 20.03.34 GENERALFELDMARSCHALL VON HINDENBURG D-APIS 00.04.40 GF-GG Besatzung Flugkapitän : Otto Brauer ( später Major ) 2. Flugzeugf. : Hans Etzold Funker : Heinrich Wiechers Maschinisten : Otto Rosinski, Willi Melzer, Heinrich Lauerwald Steward : Arthur Howe Konstrukteure : Hugo Junkers, Ernst Zindel Passagiere : 34 Fluggäste Das Gästebuch der JUNKERS G 38 ( D - 2500 ) Am 29.04.1933 wurde die JUNKERS G 38 ( D - 2500 ) auf den Namen Generalfeldmarschall von Hindenburg getauft. Der Name Hindenburg hatte bereits vorher auf dem Rumpf gestanden. Die Taufe nahm Reichsluftfahrtminister Hermann Göring im Beisein des greisen Reichspräsidenten Paul von Hindenburg vor. -
During World War Ii. New Insights from the Annual Audits of German Aircraft Producers
ECONOMIC GROWTH CENTER YALE UNIVERSITY P.O. Box 208629 New Haven, CT 06520-8269 http://www.econ.yale.edu/~egcenter/ CENTER DISCUSSION PAPER NO. 905 DEMYSTIFYING THE GERMAN “ARMAMENT MIRACLE” DURING WORLD WAR II. NEW INSIGHTS FROM THE ANNUAL AUDITS OF GERMAN AIRCRAFT PRODUCERS Lutz Budraß University of Bochum Jonas Scherner University of Mannheim Jochen Streb University of Hohenheim January 2005 Notes: Center Discussion Papers are preliminary materials circulated to stimulate discussions and critical comments. The first version of this paper was written while Streb was visiting the Economic Growth Center at Yale University in fall 2004. We are grateful to the Economic Growth Center for financial support. We thank Christoph Buchheim, Mark Spoerer, Timothy Guinnane, and the participants of the Yale economic history workshop for many helpful comments. Corresponding author: Prof. Dr. Jochen Streb, University of Hohenheim (570a), D- 70593 Stuttgart, Germany, E-Mail: [email protected]. This paper can be downloaded without charge from the Social Science Research Network electronic library at: http://ssrn.com/abstract=661102 An index to papers in the Economic Growth Center Discussion Paper Series is located at: http://www.econ.yale.edu/~egcenter/research.htm Demystifying the German “armament miracle” during World War II. New insights from the annual audits of German aircraft producers by Lutz Budraß, Jonas Scherner, and Jochen Streb Abstract Armament minister Albert Speer is usually credited with causing the boom in German armament production after 1941. This paper uses the annual audit reports of the Deutsche Revisions- und Treuhand AG for seven firms which together represented about 50 % of the German aircraft producers. -
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 $140-million item that some press accounts have identified as being for continued work on a next-generation bomber. FY2010 defense authorization bill: The conference report (H.Rept. 111-288 of October 7, 2009) on the FY2010 defense authorization act (H.R. -
CASE FILE Co
CASE FILE co TECHIICAL LIEMORANUI.:S 1TATIONAL ADVISORY FOR AERONAUTICS No. 608 THE USE OF ELEKTRON MTAL liT AIRPLANE CONSTRUCTION By E. I. de Ridder Jahrbuoh 1929 der Wsenschaft1iohen Oesellschaft fi.r Lu±tfahrt This nmuua ON W* F** Nt R NATIONAL MWOlY COMM4!TI K* AEONAIrnr L&JIG1Y PVVOKIAL *€O$*tlT%C*t. LAaOPA7OPY LANG&.EY FIELD, MAM1N, VRIN*A TO ThLMOV€ *uø€: QUESTS R) P*iCAIONS SHOULD ,,Do(SstD Vasi ng to i-i I11Nk pmi*y coMMrcEE Mebruary, 1931 37$UMI'. N.W.. *INGTO$ • 2S. ).C. NATIONAL ADVISORY COITTEE FOR AERONAUTICS TECHNICAL 1MORANDUM NO. 608 THE USE OF ELEKTRON 1.rETAL IN AIRPLANE CONSTRUCTION* By E. I. de Ridder The tendency in aircraft construction is tovard higher per formanc:e. and gea.ter economy. From the , aerodynamic standpoint this me:ans a minimum possible drag by streamlining,. and from the structura]viewpo,nt, .aving in weight by usag light metal. Elektron is the lightest of the light metas, andas such merits our special attention beoaus .e it meets the demand for lighter construction. Itis impossible to go fully into its mechanical proper- ties and chemical composition on this occasion, but i .t should. not, be passed without at least briefly describing those charac- teristics which are of interest to the cpnstructor who uses it. E].elctron,. .as manufacT'cured ly the .1. G. Dye Industry, A.G., Bitterfeld,; isa magnesium-base alloy offrom 1.8 to 1.83 spe- cif'ic gravity.,. lience.a third as ligit as aluminum alloys. The rn I + .' eEg point of the metal is 625° slightly below that of aluminum. -
The Amazing Aviation Story of VFP
Light Photographic Squadron (VFP) 62 CAG Commander English (left) congratulating VFP– 62 detachment pilots (left to right) Lieutenant Commander Ward Berkey, Lieutenant Junior Grade Rick Maioriello and Lieutenant Eugene Bezore on return to stateside aboard USS Essex (CVA–9), November 1958. Richard Maioriello collection rnest Hemingway once wrote of fighter pilots and their planes: “You love a lot of things if you live around them. But there isn’t any woman and there isn’t any horse, nor any before nor any after, that is as lovely as a great airplane. EAnd men who love them are faithful to them even though they leave them for DEDICATION: others. Man has one virginity to lose in fighters, and if it is a lovely airplane he loses ONE AVIATOR’S SURPRISE DISCOVERY AND it to, there is where his heart will be forever.” Examples of this love and devotion Hemingway recognized are all around us at the National Naval Aviation Museum HIS EFFORTS TO SAVE AN OLD WARBIRD and other fine aviation museums throughout the world. And behind each restored by Mr. Ken Jack aircraft, there is a love story. Such a story for Colonel Richard “Rick” full-steam towards Beirut 700-miles away. The Maioriello, USAF (Ret.), began when, as a Sixth Fleet super carrier USS Saratoga (CVA–60) 20-year-old Navy ensign in December 1956, he was anchored at Cannes, France, and similarly reported to Light Photographic Squadron (VFP) departed to join Essex. 62. Rick laughs today recollecting when, after Events heated up quickly as a result of flight training, his training officer told him of his President Eisenhower authorizing Operation new assignment to the photo recon squadron, Blue Bat on 5 July 1958 to bolster Lebanese and was surprised when Rick responded that he President Chamoun against the internal would rather be a fighter pilot. -
A52 Mosquito Light Bomber
A52 Mosquito Light Bomber The de Havilland DH 98 Mosquito was one of the greatest combat Initial delays in production were due to the difficulties of importing aircraft of World War II. Originally conceived as a fast, unarmed, light engines, tools and priority equipment from de Havilland in Great Britain bomber that would be able to outfly fighters, the lightweight, all-wood and Canada. Soon after production began, the manufacturer discovered construction “Mossie” first flew on Nov. 25, 1940, and had a top speed an issue with wing assembly, and the first 50 sets of wings required of almost 400 mph. Mosquitoes were built in several different versions, modification. This, and the discovery of flutter issues, further delayed including fighter-bombers (FBs), photo-reconnaissance, day and night production, which eventually amounted to just 75 airplanes being built bombers, and long-range day and night fighters. between March 1944 and May 1945. By the end of the war, production issues had been resolved, and 212 Mosquitoes were built at Bankstown. Mosquitoes were assembled in Great Britain, Canada, and in 1942, the Of these, six FB Mk 40s were converted for photo reconnaissance as Australian de Havilland factory at Bankstown commenced production of PR Mk 40s, and a further 28 were converted to PR Mk 41s, with the last an FB version of the Mosquito. A Royal Air Force Mk II (DD664) was delivered July 22, 1948. delivered to Bankstown and used as a prototype for the Australian FB Mk 40s. It made its first flight on Dec. 17, 1942, and was later delivered In addition to the Australian-built Mosquitoes, 76 British-built Mosquitoes to the Royal Australian Air Force (RAAF) on Jan. -
The Cost of Replacing Today's Air Force Fleet
CONGRESS OF THE UNITED STATES CONGRESSIONAL BUDGET OFFICE The Cost of Replacing Today’s Air Force Fleet DECEMBER 2018 Notes The years referred to in this report are federal fiscal years, which run from October 1 to September 30 and are designated by the calendar year in which they end. All costs are expressed in 2018 dollars. For the years before 2018, costs are adjusted for inflation using the gross domestic product price index from the Bureau of Economic Analysis. Costs for years after 2018 are adjusted for inflation using the Congressional Budget Office’s projection of that index. On the cover: An F-15C Eagle during takeoff. U.S. Air Force photo by Staff Sergeant Joe W. McFadden. www.cbo.gov/publication/54657 Contents Summary 1 Today’s Air Force Aircraft and Their Replacement Costs 1 BOX 1. MAJOR AIRCRAFT IN THE AIR FORCE’S FLEET AND THEIR PRIMARY FUNCTIONS 2 How CBO Made Its Projections 5 Projected Costs of New Fighter Aircraft 6 F-35A 7 Light Attack Aircraft 7 Penetrating Counter Air Aircraft 8 Managing Procurement Costs in Peak Years 9 Appendix: Composition of the Current Air Force Fleet and CBO’s Estimate of Replacement Costs 11 List of Tables and Figures 18 About This Document 19 The Cost of Replacing Today’s Air Force Fleet Summary different missions (seeBox 1 and the appendix). They The U.S. Air Force has about 5,600 aircraft, which range range widely in age from the 75 new aircraft that entered in age from just-delivered to 60 years old. -
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.