Downwash

In aeronautics, downwash is the change in direction of air deflected by the aerodynamic action of an airfoil, wing, or helicopter rotor blade in motion, as part of the process of producing lift.^[1] In helicopter aerodynamics discussions, it may be referred to as induced flow.^[2]

Lift on an airfoil is an example of the application of Newton's third law of motion – the force required to deflect the air in the downwards direction is equal in magnitude and opposite in direction to the lift force on the airfoil. Lift on an airfoil is also an example of the Kutta-Joukowski theorem. The Kutta condition explains the existence of downwash at the trailing edge of the wing.^[1]^[3]^[4]^[5]

References

Wikimedia Commons has media related to Downwash (fluid dynamics).

^ ^a ^b Crane, Dale: Dictionary of Aeronautical Terms, third edition, page 172. Aviation Supplies & Academics, 1997. ISBN 1-56027-287-2
^ "ALC-104: Helicopter - General and Flight Aerodynamics". www.faasafety.gov. Federal Aviation Authority. Retrieved 18 January 2022.
^ Anderson, John D. (2004), Introduction to Flight (5th ed.), McGraw-Hill, pp. 352–361, §5.19, ISBN 0-07-282569-3
^ "The main fact of all heavier-than-air flight is this: the wing keeps the airplane up by pushing the air down." In: Langewiesche, Wolfgang (1990), Stick and Rudder: An Explanation of the Art of Flying, McGraw-Hill, pp. 6–10, ISBN 0-07-036240-8
^ "Downwash Effects on Lift". nasa.gov. Retrieved 9 February 2023.

Read other articles:

Barometric formula

Formula used to model how air pressure varies with altitude The barometric formula is a formula used to model how the pressure (or density) of the air changes with altitude. Pressure equations See also: Atmospheric pressure Pressure as a function of the height above the sea level There are two equations for computing pressure as a function of height. The first equation is applicable to the standard model of the troposphere in which the temperature is assumed to vary with altitude at a lapse r...

List of battles of the Second Punic War

A generic representation of the location and result of some battles of the second Punic war. Not to exact scale, accuracy limited by the availability of primary source data. vteSecond Punic War Prelude Saguntum Rhone Crossing of the Alps Italy Ticinus Trebia Mutina Placentia Victumulae Lake Trasimene Umbrian Lake Crossing of the Apennines Ager Falernus Geronium Cannae Silva Litana 1st Nola Nuceria Alfaterna 1st Casilinum Hamae 1st Petelia Cumae 2nd Nola 1st Beneventum 3rd Nola 2nd Casilinum L...

Tujuh Kebencian Besar

Artikel ini memuat Teks Manchu. Tanpa bantuan render yang baik, anda mungkin akan melihat tanda tanya, kotak-kotak, atau simbol lainnya bukannya abjad Manchu. Tujuh Kebencian Besar (Manchu: ᠨᠠᡩᠠᠨᡴᠣᡵᠣ nadan koro; Hanzi: 七大恨; Pinyin: Qī Dà Hèn) adalah sebuah manifesto yang diumumkan oleh Nurhaci pada hari ketiga belas bulan keempat Imlek pada tahun ketiga era Tianming (Hanzi: 天命; 7 Mei 1618[1]). Manifesto ini secara efektif menjadi pernyat...

Daftar Wakil Bupati Boven Digoel

Wakil Bupati Boven DigoelPetahanaLexi Romel Wagiusejak 13 Oktober 2021Masa jabatan5 tahunDibentuk2005Pejabat pertamaMarcelino YomkondoSitus webwww.bovendigoelkab.go.id Berikut ini adalah daftar Wakil Bupati Boven Digoel dari masa ke masa. No Wakil Bupati Mulai Jabatan Akhir Jabatan Prd. Ket. Bupati 1 Marcelino Yomkondo 2005 2010 1 Yusak YaluwoS.H., M.Si. Jabatan kosong 2010 2011 - Drs.Bonevasius Konotigop(Pelaksana Harian) 2 Yesaya MerasiS.IP. 7 Maret 2011 7 Maret 2011 2 &#...

Vice Chief of Naval Operations

Military rank Vice Chief of Naval OperationsMark of the U.S. NavyFlag of the Vice Chief of Naval OperationsIncumbentAdmiral James W. Kilbysince 5 January 2024United States NavyOffice of the Chief of Naval OperationsAbbreviationVCNOReports toChief of Naval OperationsAppointerThe Presidentwith Senate advice and consentConstituting instrument10 U.S.C. § 8035Formation26 March 1942; 82 years ago (1942-03-26)First holderFrederick J. Horne The vice chief of nav...

QRpedia

QRpediaA QRpedia code which decodes as the URL http://en.qrwp.org/QRpedia, used widely as the logo.The QRpedia website, showing a QR code, which decodes as the URL http://en.qrwp.org/QRpediaURLqrpedia.orgTipelayanan daring Bersifat komersial?NoPendaftaranNoneBahasaMultilingualLisensiMIT LicensePemilikWikimedia UK PembuatTerence Eden Roger BamkinBerdiri sejak9 April 2011; 13 tahun lalu (2011-04-09)StatusOnline Contoh QRpedia atau kode QR, yang mengkodekan URL http://en.qrwp.org/QRpedia QR...

Barbecue sauce

Sauce used as a marinade, basting, topping, or condiment Barbecue sauceSt. Louis-style barbecue involves slow open grilling until done, then simmering in a pan of barbecue sauce placed on the grill.TypeCondimentPlace of originUnited StatesMain ingredientsVinegar, tomato paste, or ketchupIngredients generally usedLiquid smoke, onion powder, spices such as mustard and black pepper, mayonnaise, and sugar or molasses Cookbook: Barbecue sauce Media: Barbecue sauce Barbecue sauce (al...

Ariel 5

Ariel 5Mission typeAstronomyOperatorSERC / NASACOSPAR ID1974-077A SATCAT no.7471 Spacecraft propertiesManufacturerGoddard Space Flight CenterLaunch mass130.5 kg (288 lb) Start of missionLaunch date15 October 1974, 07:47:00 (1974-10-15UTC07:47Z) UTCRocketScout B-1Launch siteSan Marco End of missionDecay date14 March 1980 Orbital parametersEccentricity0.00325Perigee altitude512 km (318 mi)Apogee altitude557 km (346 mi)Inclination2.9 degreesPeriod95....

Saint-Hubert (Belgique)

Pour les articles homonymes, voir Saint-Hubert. Si ce bandeau n'est plus pertinent, retirez-le. Cliquez ici pour en savoir plus. Cet article ne cite pas suffisamment ses sources (juillet 2015). Si vous disposez d'ouvrages ou d'articles de référence ou si vous connaissez des sites web de qualité traitant du thème abordé ici, merci de compléter l'article en donnant les références utiles à sa vérifiabilité et en les liant à la section « Notes et références ». En pratiq...

Tracy LaQuey Parker

Canadian-American businesswoman Tracy LaQuey Parker in 2014 Tracy LaQuey Parker is a Canadian-American businesswoman. She is the senior vice president at Parker Solutions Group. Before joining the company, LaQuey Parker worked for Cisco as a chief technology officer and started The UTeach Institute. Apart from her career, LaQuey Parker became the first person to win a lawsuit against a spammer and was inducted into the Internet Hall of Fame in 2017. Early life and education LaQuey Parker was ...

CIA activities in Japan

Activities by the U.S. Central Intelligence Agency in occupied and post-occupation Japan Seal of the Central Intelligence Agency This article is part of a series on theLiberal Democratic Party (Japan) History1950s 1955 System Soviet–Japanese JointDeclaration of 1956 U.S.-Japan Security Treaty 1960s Three Non-Nuclear Principles 1970s Lockheed bribery scandals Treaty of Peace and Friendship between Japan and China 1980s Recruit scandal Japanese asset price bubble 1990s Recruit scandal Lost De...

Birokrasi

Bagian dari seri tentangPolitik Topik utama Daftar artikel politik Politik berdasarkan negara Ekonomi politik Sejarah politik Sejarah politik dunia Sistem politik Anarkisme Demokrasi Direksional Federasi Feodalisme Kediktatoran Meritokrasi Monarki Negara-kota Rezim hibrida Parlementer Presidensial Republik Semiparlementer Semipresidensial Teokrasi Spektrum politik kiri dan kanan Disiplin akademik Ilmu politik(ilmuwan politik) Hubungan internasional(teori) Politik komparatif Filsafat politik A...

Sri Medan

Town in Johor, MalaysiaSri MedanTownOther transcription(s) • Jawiسري ميدن • Chinese铁山 FlagSri MedanLocation in MalaysiaShow map of JohorSri MedanSri Medan (Peninsular Malaysia)Show map of Peninsular MalaysiaCoordinates: 1°59′06″N 102°57′25″E / 1.9849548°N 102.9569216°E / 1.9849548; 102.9569216CountryMalaysiaStateJohorCityBatu PahatGovernment • Local AuthorityMajlis Daerah Yong PengTime zoneUTC+8 (MST)Postc...

Нова-Градишка

ГородНова-Градишкахорв. Nova Gradiška Герб 45°15′ с. ш. 17°23′ в. д.HGЯO Страна Хорватия Жупания Бродско-Посавская Глава Винко Гргич История и география Первое упоминание 1756 Площадь 48,9 км²[1]15,3 км²[1] Высота центра 129 м Часовой пояс UTC+1:00, летом UTC+2:00 Населени...

Burkburnett

Burkburnettcity(EN) City of Burkburnett LocalizzazioneStato Stati Uniti Stato federato Texas ConteaWichita TerritorioCoordinate34°04′58″N 98°34′06″W34°04′58″N, 98°34′06″W (Burkburnett) Altitudine323 m s.l.m. Superficie24,60 km² Abitanti10 811 (2010) Densità439,47 ab./km² Altre informazioniCod. postale76354 Prefisso940 Fuso orarioUTC-6 CartografiaBurkburnett Burkburnett – Mappa Sito istituzionaleModifica dati su Wikidata · Manuale B...

Alexander Christie (bishop)

American prelate The Most ReverendAlexander ChristieArchbishop of Oregon CityChurchCatholicArchdioceseOregon CityAppointedMarch 4, 1899Term endedApril 6, 1925PredecessorWilliam Hickley GrossSuccessorEdward HowardOther post(s)Bishop of Vancouver Island (1898-1899)OrdersOrdinationDecember 22, 1877by Édouard-Charles FabreConsecrationJune 29, 1898by John IrelandPersonal detailsBorn(1848-05-28)May 28, 1848Highgate, VermontDiedApril 6, 1925(1925-04-06) (aged 76)Portland, Oregon Alex...

Molybdenum deficiency (plant disorder)

This article is about molybdenum deficiency in plants. For the same deficiency in animals, see molybdenum deficiency. Molybdenum (Mo) deficiency occurs when plant growth is limited because the plant cannot take up sufficient quantities of this essential micronutrient from its growing medium. For crops growing in soil, this may be a result of low concentrations of Mo in the soil as a whole (i.e. the parent material of the soil is low in Mo), or because the soil Mo is held in forms that are not...

碧霞宮

24°45′35″N 121°45′04″E / 24.759585°N 121.751122°E / 24.759585; 121.751122 碧霞宮基本信息位置臺灣宜蘭縣宜蘭市中山里城隍街52號主神武穆聖王例祭農曆二月十五建立时间1896年地圖碧霞宮，又稱武穆聖王廟，是位於臺灣宜蘭縣宜蘭市中山里的岳飛廟，獲臺灣總督府、中華民國政府重視並舉辦祭典，為宜蘭第一座縣定古蹟，亦為全國第一座縣定古蹟。歷史沿革清�...

The Captain from Köpenick (1956 film)

1956 West German comedy drama directed by Helmut Käutner The Captain from KöpenickDer Hauptmann von KöpenickTheatrical release poster by Tom JungDirected byHelmut KäutnerWritten byHelmut KäutnerCarl ZuckmayerBased onThe Captain of Köpenick by Carl ZuckmayerProduced byGyula TrebitschStarringHeinz RühmannHannelore SchrothMartin HeldErich SchellowCinematographyAlbert BenitzEdited byKlaus DudenhöferMusic byBernhard EichhornProductioncompanyReal FilmDistributed byReal Film Distributors Cor...

Storia LGBT negli Stati Uniti d'America

La storia LGBT negli attuali Stati Uniti d'America ha il suo inizio nel periodo precedente alla colonizzazione europea delle Americhe. Indice 1 Pre-XX secolo 2 XVII-XIX secolo 3 1900-1965 4 1965-1999 4.1 Liberazione Gay 4.2 Migrazione Gay 4.3 Depenalizzazione nelle relazioni 4.4 Reazioni di opposizione 5 XXI secolo 6 Note 7 Voci correlate 8 Altri progetti 9 Collegamenti esterni Pre-XX secolo Tra le popolazioni e i gruppi dei nativi americani, sono sempre esistiti individui descritti come Two ...