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غرومان

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غرومان

Grumman Aircraft Engineering Corporation · Grumman Aerospace Corporation · Grumman Corporation

The Long Island ‘Iron Works’ started in a garage by a shy engineer who mortgaged his house — and went on to build the Hellcat, the Tomcat and the craft that landed men on the Moon.

1929تأسست
تم دمجها في نورثروب غرومان in 1994حالة
25الطائرات المسجلة
32القوات الجوية التي تحلق بأنواعها
الصورة: 玄史生 / ويكيميديا كومنز (CC BY-SA 3.0)
دولةالولايات المتحدةتأسست1929-12-06المؤسسونLeroy Grumman, Leon “Jake” Swirbul, William Schwendler, Edmund Ward Poor, E. Clinton Towlالمقر الرئيسيBethpage, Long Island, New Yorkحالةتم دمجها في نورثروب غرومان in 1994
القصة

Grumman: the company and the aircraft that made its name

A mortgage and a garage in Baldwin

In 1929 Keystone bought the Loening aircraft company and announced it was leaving Long Island for Pennsylvania. Its general manager, a quiet Cornell engineer named Leroy Grumman, refused to go. He mortgaged his house for $16,950, his colleague Jake Swirbul’s mother borrowed $6,000 from her employers, and with William Schwendler, Ed Poor and Clint Towl they registered a company on 6 December 1929. On 2 January 1930 they moved into an abandoned car showroom in Baldwin that had once been the Cox-Klemin aircraft works. There were 18 people on the payroll. The first jobs were repairing Loening amphibians and welding aluminium truck bodies. The president and vice-president spent day one on their knees, sorting nuts and bolts.

The educated hunch

Grumman was almost not a pilot at all. A Navy medical board wrongly diagnosed him with flat feet; a clerical error then sent him to an MIT course for pilot trainees, and he kept quiet and earned his wings in 1918. That luck shaped the company. Grumman patented a retractable landing gear in 1932, and the Navy’s first Grumman fighter, the FF-1, carried his splayed wheels into its fuselage. Colleagues called him a master of the educated hunch. He found the pivot for the Sto-Wing, the folding wing that let carriers pack in far more fighters, by sticking paper clips into a soap eraser.

The Cats go to war

Then came the war, and the Cats. The F4F Wildcat held the line over the Pacific in 1942 while its successor was rushed into being: the F6F Hellcat first flew on 26 June 1942 and 12,275 were built in just over three years. Hellcats were credited with 5,163 kills in the Pacific, 56 per cent of all US Navy and Marine air victories, at a recorded cost of 270 Hellcats in air combat — a ratio of 19 to 1. The TBF Avenger torpedo bomber, 9,839 built, carried among its pilots a 20-year-old future president, George H. W. Bush. Demand was so great that General Motors set up its Eastern Aircraft Division to build three-quarters of all Wildcats and Avengers.

The Grumman Iron Works

Grumman had once insisted the firm should never grow beyond 250 people or it would lose control; his accountant had to tell him the payroll had already reached 256. By 1943 it employed 25,500. The rugged aircraft that poured out of Bethpage earned the company its nickname, the Grumman Iron Works, and the founders kept an odd discipline: Grumman and Swirbul shared one office and vowed never to leave it with a disagreement unresolved. In the summer of 1944 the shy founder borrowed a front-line Hellcat for a half-hour joyride; the test pilots fined him a dollar for landing with flaps down, and he paid five.

The craft that landed on the Moon

After the war Grumman stayed on the carriers with the Panther and Cougar jets, the S-2 Tracker and the Albatross amphibian, and branched out with the Ag Cat crop-duster and the Gulfstream I, a purpose-built business turboprop. Its greatest prize came on 7 November 1962: the contract for the Apollo Lunar Module. On 20 July 1969 the Long Island-built Eagle landed on the Moon. Six lunar modules touched down in all, and a seventh, Aquarius, kept the Apollo 13 crew alive after an explosion crippled their spacecraft. The company renamed itself Grumman Aerospace that year, and lost the Space Shuttle contract to Rockwell.

Tomcat, Hawkeye and the last fight

The 1960s and 1970s brought the A-6 Intruder, the E-2 Hawkeye radar picket, the EA-6B Prowler and the F-14 Tomcat, first flown on 21 December 1970 and made a film star by Top Gun. In 1981 the company fought off a hostile bid from LTV, with its own pension fund buying shares in a defence later tested in the courts. At its 1986 peak Grumman employed 23,000 people on Long Island. The end of the Cold War finished it: in 1994 Northrop paid $2.1 billion, topping a $1.9 billion offer from Martin Marietta, to create Northrop Grumman. Bethpage closed, and the Calverton hangars became film studios. The Hawkeye is still built today.

The final perfection of the aeroplane will be one of the greatest triumphs that man has ever gained over nature.Leroy Grumman · high school salutatory address, Huntington High School, 20 June 1911

لمحة سريعة

Grumman in numbers

الشركة

باختصار
تأسست عام 1929

  • Registered 6 December 1929 by Leroy Grumman and four former Loening colleagues
  • Opened 2 January 1930 in a former car showroom in Baldwin, Long Island
  • Moved to Valley Stream (1931), Farmingdale (1932) and Bethpage (1937)
  • Renamed Grumman Aerospace Corporation in 1969

إنتاج

اشتهر بـ
Hellcat and Tomcat

  • Famous types: F4F Wildcat, F6F Hellcat, TBF Avenger, A-6 Intruder, E-2 Hawkeye, F-14 Tomcat
  • Prime contractor for the Apollo Lunar Module
  • Civil lines: Goose and Albatross amphibians, Ag Cat, Gulfstream I and II

اليوم

الآن
Part of Northrop Grumman

  • Bought by Northrop for $2.1 billion in 1994
  • Gulfstream business jet line sold in 1978 and now part of General Dynamics
  • E-2D Hawkeye still in production by Northrop Grumman

The Bethpage plant became offices and housing; Calverton became Grumman Studios and an industrial park.

الأرقام

Employees (wartime peak)
25,5001943
Employees on Long Island (Cold War peak)
23,0001986
Rank by value of US wartime production contracts
22nd
Hellcats built
12,2751942–1945
Hellcat air-to-air kills (Pacific)
5,163, about 19 to 1
Lunar modules landed on the Moon
6
Purchase price paid by Northrop
$2.1 billion1994
Bethpage site leased from the US Navy
6 million sq ft of buildings on 105 acres

الطائرة

Every notable Grumman aircraft

Photos: U.S. Coast Guard photo 26-G-03-17-43(4) / Wikimedia Commons (Public domain); US Navy (H.S. Fawcett) · Public domain; U.S. Navy · Public domain; US Navy · Public domain; U.S. Navy (public domain); Cameron11598 / Wikimedia Commons (CC BY-SA 4.0); U.S. Navy (80-G-12191) · Public domain; U.S. Navy · public domain; Regions / Wikimedia Commons (CC BY-SA 3.0); U.S. Army · public domain; US Air Force from USA / Wikimedia Commons (Public domain); NASA / DFRC / Larry Sammons · Public domain

الطائرات دور الرحلة الأولى تم البناء حالة ملحوظة
Grumman FF Two-seat carrier fighter 1931 116 متقاعد First Grumman aircraft; retractable landing gear
Grumman F3F Carrier biplane fighter 1935 147 متقاعد
Grumman J2F Duck برمائي متعدد الاستخدامات 1936 584 متقاعد Total includes Columbia-built aircraft
Grumman G-21 Goose برمائي 1937 345 متقاعد
غرومان إف 4 إف وايلدكات مقاتلة حاملة طائرات 1937 7,885 متقاعد 5,280 built as FM variants by GM’s Eastern Aircraft Division
Grumman TBF Avenger قاذفة طوربيدات 1941 9,839 متقاعد Nearly three-quarters built by Eastern Aircraft as the TBM
غرومان إف 6 إف هيلكات مقاتلة حاملة طائرات 1942 12,275 متقاعد Credited with 5,163 kills in the Pacific
Grumman F7F Tigercat Twin-engine fighter 1943 364 متقاعد
غرومان إف 8 إف بيركات مقاتلة حاملة طائرات 1944 1,265 متقاعد
غرومان إتش يو-16 ألباتروس البحث والإنقاذ للبرمائيات 1947 466 متقاعد
غرومان إف 9 إف بانثر Carrier jet fighter 1947 1,385 متقاعد Grumman’s first jet
Grumman F9F / F-9 Cougar Swept-wing carrier fighter 1951 1,988 متقاعد
غرومان إس-2 تراكر طائرات مضادة للغواصات 1952 1,284 متقاعد
Grumman F-11 Tiger Supersonic carrier fighter 1954 199 متقاعد Flown by the Blue Angels until 1969
Grumman Ag Cat Agricultural biplane 1957 more than 2,450 متقاعد Schweizer built 2,455 under contract through 1981
Grumman Gulfstream I Business turboprop 1958 200 متقاعد
Grumman OV-1 Mohawk Battlefield reconnaissance 1959 380 متقاعد
غرومان إيه-6 إنترودر هجوم في جميع الأحوال الجوية 1960 693 متقاعد
Grumman E-2 Hawkeye نظام الإنذار المبكر المحمول جواً 1960 313 قيد الإنتاج Total includes 88 E-2D built by Northrop Grumman
Grumman C-2 Greyhound Carrier on-board delivery 1964 56 متقاعد 17 C-2A plus 39 C-2A(R)
غرومان غلف ستريم 2 طائرة رجال الأعمال 1966 256 في الخدمة
Grumman EA-6B Prowler Electronic warfare 1968 170 متقاعد Last flown by the US Marine Corps, March 2019
Grumman F-14 Tomcat Carrier fleet-defence fighter 1970 712 في الخدمة Retired by the US Navy in 2006; still operated by Iran
Grumman X-29 Forward-swept-wing research aircraft 1984 2 متقاعد
Apollo Lunar Module Crewed lunar lander 13 to 15 متقاعد Build count differs between sources; six landed on the Moon; Aquarius served as Apollo 13’s lifeboat

من يقودهم؟

Grumman aircraft in the world’s air forces

32 air forces in the Order of Battle fly or flew Grumman types. اثنان منهم لا يزال لديهم واحد قيد الخدمة.

القوات الجوية في الخدمة كانت تُنقل جواً سابقاً
القوات الجوية الكاميرونية غرومان غلف ستريم 3
القوات الجوية لجمهورية إيران الإسلامية غرومان إف-14 إيه تومكات
طيران الجيش الأرجنتيني Grumman OV-1D Mohawk
الطيران البحري الأرجنتيني Grumman S-2A, S-2E and IAI S-2T Turbo Tracker, غرومان إف 9 إف بانثر, Grumman F9F Cougar (TF-9J), Grumman J2F Duck
القوات الجوية البرازيلية غرومان إس-2 تراكر (بي-16)
الطيران البحري والجيش الكندي غرومان أفنجر إيه إس 3 (تي بي إم-3 إي), غرومان أفنجر AEW مارك 3W2, طائرة التعقب Grumman CS2F-1, غرومان أفنجر، إتش إم إس شخص ذو ثروة, Grumman Wildcat and Fairey Barracuda, HMS الناخس
خدمات الطيران الحكومية الكندية Noorduyn Norseman, Grumman Goose, DHC-2 Beaver and DHC-3 Otter, متتبع Grumman CS2F
سلاح الجو التابع للأسطول غرومان مارتليت (إف 4 إف وايلدكات), غرومان هيلكات, غرومان أفنجر
سلاح الجو التابع للبحرية الملكية الأسترالية متتبعات طائرات غرومان إس-2إي وإس-2جي
الطيران البحري الفرنسي Grumman F6F Hellcat, Grumman TBM Avenger
خدمات الطيران الحكومية الفرنسية غرومان إس-2 تراكر / كونير توربو فايركات
الطيران البحري الألماني غرومان إتش يو-16 ألباتروس
القوات الجوية اليونانية غرومان HU-16B ألباتروس
سلاح الجو التابع للبحرية اليونانية غرومان HU-16B ألباتروس
قسم الطيران التابع لخفر السواحل الأيسلندي Grumman Goose
القوات الجوية الإيطالية طائرة غرومان HU-16A ألباتروس وطائرة إس-2 إف تراكر
طيران قوات الدفاع الذاتي البحرية اليابانية طائرة غرومان إس 2 إف-1 تراكر, غرومان تي بي إم أفنجر
القوات الجوية لجمهورية الصين غرومان إس-2 تراكر
طيران البحرية لجمهورية الصين غرومان إس-2 تي توربو تراكر
طيران البحرية لجمهورية كوريا (قيادة القوات الجوية البحرية) غرومان إس-2 تراكر
القوات الجوية لجمهورية سنغافورة غرومان إي-2 سي هوك آي
القوات الجوية الملكية الكندية غرومان سي إس آر-110 ألباتروس
القوات الجوية الملكية النيوزيلندية غرومان تي بي إف-1 أفنجر
القوات الجوية الملكية النرويجية غرومان إتش يو-16 ألباتروس
القوات الجوية الملكية التايلاندية غرومان إف 8 إف بيركات
قسم الطيران البحري الملكي التايلاندي Grumman HU-16D Albatross, غرومان إس-2 تراكر
القوات الجوية التوغولية غرومان غلف ستريم 2
الطيران البحري التركي متتبعات طائرات غرومان إس-2إي وإس-2إي
فرع الطيران التابع لجيش الولايات المتحدة Grumman OV-1 Mohawk
طيران خفر السواحل الأمريكي Grumman HU-16E Albatross (UF-1G/2G), Grumman E-2C Hawkeye, Grumman J4F Widgeon, JRF Goose and J2F Duck
طيران سلاح مشاة البحرية الأمريكية Grumman EA-6B Prowler, غرومان إيه-6 إي إنترودر, غرومان إف 9 إف بانثر, غرومان إف 4 إف وايلدكات
الطيران البحري للولايات المتحدة Grumman C-2A Greyhound, غرومان إف-14 إيه/بي/دي تومكات, غرومان إيه-6 إنترودر, غرومان إف 9 إف بانثر, غرومان إف 6 إف هيلكات, غرومان إف 4 إف وايلدكات وواحد آخر

الأماكن، الأشخاص، السجلات

Where Grumman built, who led it, what it achieved

المصانع

  • Baldwin garage · Baldwin, Long Island — Former Cox-Klemin works, first home from January 1930
  • Valley Stream and Farmingdale · Long Island, New York — Successive homes in 1931 and 1932
  • Bethpage · Bethpage, New York — Headquarters and main plant from 1937 on land leased from the US Navy; later converted to offices and housing
  • Calverton · Calverton, New York — Testing and final assembly at the 6,000-acre Naval Weapons Station; now Grumman Studios and an industrial park

الناس

  • Leroy Randle Grumman · co-founder, president 1939–1947, chairman 1947–1966 — 1895–1982; Naval Aviator No. 1216
  • Leon “Jake” Swirbul · co-founder, president 1947–1960
  • William Schwendler · co-founder, engineer
  • Edmund Ward Poor · co-founder, former Loening business manager
  • E. Clinton Towl · co-founder; president 1960–1967, chairman 1966–1976
  • Joseph G. Gavin Jr. · president 1976–1985
  • John Cocks Bierwirth · chairman 1976–1988 — Led the defence against LTV’s 1981 bid

الأرقام القياسية والأولويات

  • Hellcat: credited with 5,163 Pacific kills, 56 per cent of US Navy and Marine air victories of WWII
  • Prime contractor for the first crewed spacecraft to land on the Moon, Apollo 11, 1969
  • Largest corporate employer on Long Island for much of the Cold War
  • X-29: forward-swept-wing technology demonstrator, first flight 1984

الجدول الزمني

Grumman, year by year

1929

Grumman Aircraft Engineering Corporation registered

1930

Company opens in a former car showroom in Baldwin

1931

First flight of the FF-1, the first Grumman aircraft

1932

Leroy Grumman granted his retractable landing gear patent; move to Farmingdale

1937

Move to Bethpage; first flights of the Goose and the F4F Wildcat

1942

First flight of the F6F Hellcat

1943

Employment reaches 25,500

1947

First flight of the F9F Panther, Grumman’s first jet

1958

First flight of the Gulfstream I business turboprop

1960

First flight of the A-6 Intruder

1960

First flight of the E-2 Hawkeye

1962

Grumman wins the Apollo Lunar Module contract

1969

Renamed Grumman Aerospace Corporation; Apollo 11 lands on the Moon

1970

First flight of the F-14 Tomcat

1978

Gulfstream line sold to American Jet Industries

1981

Hostile takeover bid from LTV defeated

1986

Long Island employment peaks at 23,000

1994

Northrop buys Grumman for $2.1 billion, forming Northrop Grumman



أسئلة وأجوبة

Everything people ask about Grumman

Who founded Grumman?
Leroy Grumman, a former Navy pilot and Loening general manager, founded the company on Long Island in December 1929 with Jake Swirbul, William Schwendler, Ed Poor and Clint Towl.
Why was Grumman called the Iron Works?
Grumman aircraft were known for being rugged and reliable, especially Navy fighters that survived heavy combat damage, so the company was nicknamed the Grumman Iron Works.
Did Grumman build the Apollo Lunar Module?
Yes. Grumman won the contract in November 1962 and built the lunar modules at Bethpage. Six landed on the Moon, starting with Apollo 11 in July 1969.
What happened to Grumman?
Northrop bought Grumman in 1994 for $2.1 billion, outbidding Martin Marietta, and the combined company became Northrop Grumman. Most Long Island facilities were closed.
What were the Grumman Cats?
Grumman named its Navy fighters after cats: the Wildcat, Hellcat, Tigercat, Bearcat, Panther, Cougar, Tiger and Tomcat.
Who built Gulfstream jets originally?
Grumman. The Gulfstream I turboprop flew in 1958 and the Gulfstream II jet in 1966; Grumman sold the line in 1978 and it became Gulfstream Aerospace.