词条 | Northrop T-38 Talon | |||||||||||||||||
释义 |
The Northrop T-38 Talon is a two-seat, twinjet supersonic jet trainer. It was the world's first supersonic trainer and is also the most produced. The T-38 remains in service {{As of|2018|lc=y}} in several air forces. The United States Air Force (USAF) operates the most T-38s. In addition to training USAF pilots, the T-38 is used by NASA. The U.S. Naval Test Pilot School is the principal US Navy operator (other T-38s were previously used as USN aggressor aircraft until replaced by the similar Northrop F-5 Tiger II). Pilots of other NATO nations fly the T-38 in joint training programs with USAF pilots. {{As of|2018}}, the T-38 has been in service for over 50 years with its original operator, the United States Air Force.Design and developmentIn 1952 Northrop began work on a fighter project, the Fang, with shoulder-mounted delta wing and a single engine.[1] The proposed General Electric J79 engine, weighing nearly two tons, meant the resulting aircraft would be large and expensive.[2] Then in 1953, representatives from General Electric Aviation's newly created Small Aircraft Engine Department showed Northrop a relatively tiny engine (around 400 lb installed wt) capable of 2,500 lb of thrust, and Northrop VP-Engineering Edgar Schmued saw the possibility of reversing the trend toward the large fighters. Schmued and chief engineer Welko Gasich decided on a small twin-engine "hot-rod" fighter, the N-156. Northrop began its N-156 project in 1954, aiming for a small supersonic fighter jet capable of operating from the US Navy's escort carriers. However, when the Navy chose not to pursue equipping its fleets in that fashion, Northrop continued the N-156 design using in-house funding, recasting it as a lightweight fighter (dubbed N-156F) and aimed at the export market. In the mid-1950s the USAF issued a General Operating Requirement for a supersonic trainer, planning to retire its 1940s-era Lockheed T-33s. Northrop officials decided to adapt the N-156 to this competition. The only other candidate was the two-seat version of the North American F-100 Super Sabre. Although the F-100 was not considered the ideal candidate for a training aircraft (it is not capable of recovering from a spin),[3] NAA was still considered the favorite in the competition due to that company's favored-contractor status with the Air Force. However, Northrop officials convincingly presented life-cycle cost comparisons which could not be ignored, and they were awarded the contract, receiving an order for three prototypes. The first (designated YT-38) flew on 10 April 1959.[4] The type was quickly adopted and the first production examples were delivered in 1961, officially entering service on 17 March that year, complementing the T-37 primary jet trainer. When production ended in 1972, 1,187 T-38s had been built (plus two N-156T prototypes). Since its introduction, it is estimated that some 50,000 military pilots have trained on this aircraft. The USAF remains one of the few armed flying forces using dedicated supersonic final trainers, as most, such as the US Navy, use high subsonic trainers.[5] The T-38 is of conventional configuration, with a small, low, long-chord wing, a single vertical stabilizer, and tricycle undercarriage. The aircraft seats a student pilot and instructor in tandem, and has intakes for its two turbojet engines at the wing roots. Its nimble performance has earned it the nickname white rocket. In 1962 the T-38 set absolute time-to-climb records for 3,000, 6,000, 9,000 and 12,000 meters, beating the records for those altitudes set by the F-104 in December 1958. (The F-4 beat the T-38's records less than a month later.) The F-5B and F (which also derive from the N-156) can be distinguished from the T-38 by the wings; the wing of the T-38 meets the fuselage straight and ends square, while the F-5 has leading edge extensions near the wing roots and wingtip launch rails for air-to-air missiles. The wings of both the T-38 and the F-5 family use conventional skin over spar-rib structure.[5] Most T-38s built were of the T-38A variant, but the USAF also had a small number of aircraft converted for weapons training (designated AT-38B), which were fitted with a gunsight and could carry a gunpod, rockets, or bombs on a centerline pylon. In 2015, 504 T-38s were still operational with the USAF, with many more in operation around the world. Most of the USAF variant aircraft (T-38A and AT-38B) have been converted to the T-38C through an avionics upgrade program. Improvements include the addition of a HUD, GPS, INS (Inertial Navigation System), and TCAS. Most jets have also received PMP (a propulsion modification to improve low-altitude engine thrust). Approximately a third of the fleet (those that experience more severe usage) are currently undergoing structural replacements and upgrades, as well as receiving new wings, to extend their service life to 2029. The fighter version of the N-156 was eventually selected for the US Military Assistance Program and produced as the F-5 Freedom Fighter. Many of these have since reverted to a weapons training role as various air forces have introduced newer types into service. The F-5G was an advanced single-engined variant later renamed the F-20 Tigershark. In 2018, the Iranian Air Force announced that an outwardly-similar aircraft, named the Kowsar, had been constructed within Iran.[6] Operational historyMilitaryThe USAF Strategic Air Command (SAC) had T-38s in service from 1978 until SAC's 1991 inactivation. These aircraft were used to enhance the career development of bomber copilots through the "Accelerated Copilot Enrichment Program." They were later used as proficiency aircraft for all B-52, B-1, Lockheed SR-71, U-2, Boeing KC-135, and KC-10 pilots. SAC's successors, the Air Combat Command (ACC) and the Air Force Global Strike Command (AFGSC), continue to retain T-38s as proficiency aircraft for U-2 pilots and B-2 pilots, respectively.[5] The Air Training Command's (ATC) successor, the Air Education and Training Command (AETC), uses the T-38C to prepare pilots for the F-15C Eagle and F-15E Strike Eagle, the F-16 Fighting Falcon, B-52 Stratofortress, B-1B Lancer, B-2 Spirit, A-10 Thunderbolt, F-22 Raptor and F-35 Lightning II. The AETC received T-38Cs in 2001 as part of the Avionics Upgrade Program. The T-38Cs owned by the AETC have undergone propulsion modernization which replaces major engine components to enhance reliability and maintainability, and an engine inlet/injector modification to increase available takeoff thrust.[5] These upgrades and modifications, with the Pacer Classic program, should extend the service life of T-38s past 2020. The T-38 has an availability goal of 75% which it maintained in 2011, however in 2015 availability is 60%.[7] Besides the USAF, USN and NASA, other T-38 operators included the German Air Force (Luftwaffe), the Portuguese Air Force, the Republic of China Air Force, and the Turkish Air Force.[5] ReplacementThe USAF launched the T-X Program in 2010 to replace the T-38.[8] Bidders included: a joint venture of BAE Systems and Rolls Royce, offering the Hawk trainer, equipped with Rolls' Adour Mk951 engine offering 6,500 lb of thrust and FADEC; Lockheed Martin and Korea Aerospace Industries, offering the T-50; and Raytheon and Alenia Aermacchi offering the T-100, an aircraft whose design originated with the M-346.[9] Boeing and Saab offered a new-technology design powered by the General Electric F404 turbofan engine. The Boeing/Saab bid first flew on December 20, 2016 and on September 27, 2018 was declared the winner of the T-X competition.[10] NASANASA operates a fleet of thirty-two T-38 aircraft[11] and uses the aircraft as a jet trainer for its astronauts, as well as a chase plane. Its fleet is housed primarily at Ellington Field in Houston, Texas. NASA's internal projections show the number of operational jet trainers falling to 16 by 2015. The agency spends $25–30 million annually to fly and maintain the T-38s.[12]During the Space Shuttle era it was established NASA tradition for astronauts to arrive at the Kennedy Space Center in T-38 Talons.[13] AccidentsMore than 210 aircraft losses and ejections have been documented over the lifetime of the T-38.[14] NASA's T-38s were involved in four separate fatal accidents in the 1960s and 1970s, and several non-fatal incidents.
In response to the 1973 OPEC oil embargo, from 1974 to 1983, the U.S. Air Force Thunderbirds aerobatic display team adopted the T-38 Talon, which used far less fuel than the F-4 Phantom. The Blue Angels downsized to the Douglas A-4 Skyhawk at roughly the same time. After the 1982 "Diamond Crash" incident that killed four of the Thunderbirds' six demonstration pilots, the T-38 was replaced in this role by the front line F-16A Fighting Falcon. CivilThere are seven privately owned T-38s in the U.S.[11] Boeing owns two T-38s, which it uses as chase planes.[11] Thornton Corporation owns two T-38s and three F-5s and the National Test Pilot School owns one T-38.[11] In addition, two others in private ownership.[11] Variants
Operators
Aircraft on display
Specifications (T-38A){{aircraft specifications|plane or copter?=plane |jet or prop?=jet |ref= USAF factsheet[22] |crew=two: student and instructor |length main=46 ft 4.5 in |length alt=14.14 m |span main=25 ft 3 in |span alt=7.7 m |height main=12 ft 10.5 in |height alt=3.92 m |area main=170 ft² |area alt=15.79 m² |empty weight main=7,200 lb |empty weight alt=3,270 kg |Armament=None |loaded weight main=11,820 lb |loaded weight alt=5,360 kg |max takeoff weight main=12,093 lb |max takeoff weight alt= 5,485 kg |engine (jet)=General Electric J85-5A (J85-5R after PMP modification) |type of jet=afterburning turbojets |number of jets=2 |thrust main= 2,050 lb |thrust alt= 9.1 kN |afterburning thrust main=2,900 lbf[63] |afterburning thrust alt= 12.9 kN |max speed main=Mach 1.3 |max speed alt=858 mph, 1,381 km/h |range main=1,140 mi |range alt=1,835 km |ceiling main=50,000 ft |ceiling alt=15,240 m |climb rate main=33,600 ft/min[64] (170.7 m/s) |climb rate alt= |loading main=69.53 lb/ft² |loading alt=339.4 kg/m² |thrust/weight=0.65 }} See also{{Portal|United States Air Force}}{{aircontent|see also= |related=
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1. ^Johnsen 2006, pp. 5–6 2. ^Eden 2004, p. 344 3. ^Due to its elongated fuselage - the pilot's operating handbook for the two-seat version contains an instruction to avoid spins. 4. ^"Northrop marks 50th anniversary of T-38 Talon first flight." defencetalk.com, 14 April 2009. Retrieved: 21 August 2011. 5. ^TO 1T-38A-4, USAF T-38 Tech Order 6. ^http://tass.ru/mezhdunarodnaya-panorama/5474462 7. ^{{cite news |first=Amy |last=Butler |url=http://aviationweek.com/defense/t-x-competition-fierce-despite-gd-alenia-split |title=T-X Competition Fierce Despite GD, Alenia Split |work=Aviation Week & Space Technology |date=6 April 2015 |accessdate=7 April 2015 |archiveurl=https://web.archive.org/web/20150407211453/http://aviationweek.com/defense/t-x-competition-fierce-despite-gd-alenia-split |archivedate=7 April 2015 |deadurl=no}} 8. ^"USAF Braces For Fiscal Bombardment." AW & ST, 20 September 2010 9. ^Power play, The World column, AW & ST, 16 September 2013, p. 12 10. ^https://www.flightglobal.com/news/articles/boeing-wins-92b-t-x-trainer-contract-with-usaf-452263/ 11. ^1 2 3 4 "Aircraft – Make / Model Results: Northrop T-38." FAA Registry. Retrieved 21 August 2011 12. ^Creech, Gray. "T-38 Supersonic Trainer Jet Gets New Home." NASA. Retrieved 21 August 2011 13. ^http://www.universetoday.com/83456/discoverys-final-crew-arrives-at-nasas-kennedy-space-center/ 14. ^ {{Webarchive|url=https://web.archive.org/web/20141121012309/http://www.ejection-history.org.uk/Aircraft_by_Type/t_38_talon.htm |date=2014-11-21 }} Northrop T-38 Losses and Ejections 15. ^[https://news.google.com/newspapers?id=_mMhAAAAIBAJ&sjid=54YFAAAAIBAJ&dq=theodore%20freeman&pg=2525%2C4569 "Crash Kills Astronaut."] Richland, WA – Tri City Herald, 1 November 1964{{Dead link|date=August 2018}} 16. ^[https://news.google.com/newspapers?id=YqYyAAAAIBAJ&sjid=NOkFAAAAIBAJ&pg=1474,394194 "Goose Hit Jet, Killing Astronaut."] The Miami News, 17 November 1964{{Dead link|date=August 2018}} 17. ^[https://news.google.com/newspapers?id=Zf4cAAAAIBAJ&sjid=EpsEAAAAIBAJ&dq=see%20bassett%20crash&pg=6560%2C4113604 "2 Astronauts Die In Plane Crash."] The Tuscaloosa News, 28 February 1966 18. ^[https://news.google.com/newspapers?id=E20eAAAAIBAJ&sjid=S8kEAAAAIBAJ&pg=2560,5750 "See – Bassett Backup Crew Gets Gemini."] Daytona Beach, FL – Morning Journal newspaper, 1 March 1966 19. ^[https://news.google.com/newspapers?id=BcIwAAAAIBAJ&sjid=MFcDAAAAIBAJ&dq=williams%20crash&pg=7184%2C1086744 "Williams Wanted To Be First On The Moon."] St. Petersburg, FL -Evening Independent newspaper, 6 October 1967 20. ^[https://news.google.com/newspapers?id=4OYhAAAAIBAJ&sjid=5GUEAAAAIBAJ&pg=5402,1608439 "Board Pinpoints Astronaut's Death."] Sarasota, FL – Herald-Tribune newspaper, 7 June 1968 21. ^1 Andrade 1979, p. 167 22. ^1 2 3 4 5 {{cite web|url=http://www.af.mil/information/factsheets/factsheet.asp?id=126|title=T-38 TALON Fact Sheet|work=U.S. Air Force|date=2 May 2008|archiveurl=https://web.archive.org/web/20130602210659/http://www.af.mil/information/factsheets/factsheet.asp?id=126|archivedate=2 June 2013}} 23. ^"Modifications & Modernization T-38 Avionics Modernization Program." {{webarchive|url=https://web.archive.org/web/20110815232233/http://export.ssm.gov.tr/content/productDetails.aspx?ID=124 |date=2011-08-15 }} Turkish International Cooperation and Export Activities. Retrieved 21 August 2011 24. ^ airliners.net 25. ^"Northrop Space Trainer". The Aeroplane, 3 April 1959, p. 393 26. ^Article from Utrechts Nieuwsblad, 12 November 1959 27. ^https://www.blogbeforeflight.net/2018/01/portuguese-air-force-alpha-jet-farewell-ceremony-last-flight.html 28. ^https://airforcesmonthly.keypublishing.com/2011/01/19/t-38s-reborn/ 29. ^http://www.taiwanairpower.org/af/f5.html 30. ^https://www.hvkk.tsk.tr/en-us/Turkish_Air_Force/Todays_Air_Force/Aircraft_in_the_Inventory 31. ^http://www.airforcemag.com/MagazineArchive/Magazine%20Documents/2018/June%202018/Air%20Force%20Magazine%202018%20USAF%20Almanac.pdf 32. ^[https://www.afgsc.af.mil/News/Article-Display/Article/1498567/whitemans-esteemed-b-2-spirit-pilots-merged-into-single-squadron/] 33. ^"Directory: World Air Forces." Flight International, 11–17 November 2008 34. ^ California Science Center. Retrieved 16 June 2015 35. ^ warbird information exchange 36. ^ NAM, Pensacola FL 37. ^[https://web.archive.org/web/19990831090701/http://www.aero-web.org/museums/tx/htm.htm] aero-web 38. ^"T-38 Talon/60-0549." Prairie Aviation Museum. Retrieved 12 April 2013 39. ^[https://www.flickr.com/photos/lunken_spotter/11897721614/ "GT-38A Talon 60-0558 in Edinburgh."] Talon in Edinburgh 40. ^{{cite web |url=http://www.aero-web.org/museums/ca/efbm.htm |title=Archived copy |accessdate=2014-09-14 |deadurl=yes |archiveurl=https://web.archive.org/web/20141121201559/http://www.aero-web.org/museums/ca/efbm.htm |archivedate=2014-11-21 |df= }} aero-web 41. ^{{cite web |url=http://www.aero-web.org/museums/tx/lafbtx.htm |title=Archived copy |accessdate=2014-09-14 |deadurl=yes |archiveurl=https://web.archive.org/web/20140917071217/http://www.aero-web.org/museums/tx/lafbtx.htm |archivedate=2014-09-17 |df= }} aero-web 42. ^"T-38 Talon/61-0817." Warbird Registry. Retrieved 12 April 2013 43. ^Google Maps 35.5155497,-108.7794413,276 44. ^ Warbird Information Exchange 45. ^"T-38 Talon/61-0854." Pima Air & Space Museum. Retrieved 12 April 2013 46. ^1 {{cite web |url=http://www.aero-web.org/museums/tx/safbap.htm |title=Archived copy |accessdate=2014-09-14 |deadurl=yes |archiveurl=https://web.archive.org/web/20140917071941/http://www.aero-web.org/museums/tx/safbap.htm |archivedate=2014-09-17 |df= }} 47. ^"T-38 Talon/61-0902." Warbird Registry. Retrieved 12 April 2013 48. ^http://salinachamber.publishpath.com/local-things-to-see-places-to-go 49. ^"T-38 Talon/63-8224." Evergreen Aviation & Space Museum. Retrieved 12 April 2013 50. ^ airliners.net 51. ^{{cite web |url=http://www.aero-web.org/museums/ms/cafbms/65-10405.htm |title=Archived copy |accessdate=2014-09-13 |deadurl=yes |archiveurl=https://web.archive.org/web/20160304025855/http://www.aero-web.org/museums/ms/cafbms/65-10405.htm |archivedate=2016-03-04 |df= }} aero-web 52. ^{{cite web |url=http://www.aero-web.org/museums/ok/vafbok/65-10426.htm |title=Archived copy |accessdate=2014-09-14 |deadurl=yes |archiveurl=https://web.archive.org/web/20111011082452/http://www.aero-web.org/museums/ok/vafbok/65-10426.htm |archivedate=2011-10-11 |df= }} aero-web 53. ^ Aviation Heritage Park 54. ^ Bowling Green Daily News 55. ^[https://web.archive.org/web/19990831081914/http://www.aero-web.org/museums/tx/dlap.htm] aero-web 56. ^"T-38 Talon/60-0593." {{webarchive|url=https://web.archive.org/web/20120108162031/http://www.marchfield.org/gt38a.htm |date=2012-01-08 }} March Field Air Museum. Retrieved 12 April 2013 57. ^"T-38 Talon/61-0824." {{webarchive|url=https://web.archive.org/web/20130423192331/http://www.hill.af.mil/library/factsheets/factsheet.asp?id=5784 |date=2013-04-23 }} Hill Aerospace Museum. Retrieved 12 April 2013 58. ^"T-38 Talon/58-1192." South Dakota Air and Space Museum. Retrieved 12 April 2013 59. ^"T-38 Talon/60-0576." Warbird Registry. Retrieved 12 April 2013 60. ^"T-38 Talon/65-10441." {{webarchive|url=https://web.archive.org/web/20130404162322/http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=398 |date=2013-04-04 }} National Museum of the USAF. Retrieved 12 April 2013 61. ^ tinfeathers.com 62. ^[https://www.intrepidmuseum.org/Northrop-T-38N-Talon-Hoisted-to-Flight-Deck "Northrop T-38N Talon Hoisted to Flight Deck"] Intrepid Museum. Retrieved 11 July 2018. 63. ^"T-38s modified by the propulsion modernization program have approximately 19 percent more thrust, reducing takeoff distance by 9 percent." (T-38 Talon USAF Fact Sheet) 64. ^Even though this value has been printed in USAF outlets for many years, it is probably incorrect. The T-38 time-to-climb record, set in 1962, was 3 minutes to 30,000 feet. According to Northrop's Roy Martin (quoted on p. 64 of Air & Space/Smithsonian, Vol. 20, No. 3 (August/September 2005), a normal climb at military power - that is, maximum power without afterburner - is around 6,000 feet/minute.
External links{{Commons category|Northrop T-38 Talon}}
5 : Northrop aircraft|United States military trainer aircraft 1950–1959|Twinjets|Low-wing aircraft|Aircraft first flown in 1959 |
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