UAC TurboTrain
| UAC TurboTrain | |
|---|---|
 A VIA Rail TurboTrain in October 1980 | |
| In service | 1968–1982 (Canada) 1968–1976 (US) |
| Manufacturer | United Aircraft Corporation |
| Constructed | 1967–1968 |
| Number built | 7 trainsets |
| Number preserved | 0 |
| Number scrapped | 7 |
| Formation | 9 cars per trainset (Canada - CN/VIA) 7 cars per trainset (Canada - CN) 5 cars per trainset (US - Amtrak) 3 cars per trainset (US - New Haven/DOT) |
| Capacity | 322 (seven-car set) |
| Operators | Canadian National Railways Via Rail Amtrak New Haven Penn Central Illinois Central Railroad(Proposed) |
| Depots | Tracks 4,5,6 -Montreal Central Station(VIA/CN) Wilmington Shops -Bear, DE(Amtrak) |
| Specifications | |
| Car body construction | Aluminum |
| Train length | 7 cars:430 ft 8 in (131.27 m) |
| Car length | Power Cars:73 ft 3 in (22.33 m) Intermediate Cars:56 ft 10 in (17.32 m) |
| Width | 10 ft 5 in (3.18 m) |
| Height | Coach:10 ft 11 in (3.33 m) Dome:12 ft 11 in (3.94 m) Exhausts:13 ft 10 in (4.22 m) |
| Floor height | 2 ft 7 in (0.79 m) |
| Maximum speed | 170 mph (274 km/h) (design) 120 mph (193 km/h) (service) |
| Weight | 7 cars:165.6 long tons (185.5 short tons; 168.3 tonnes) |
| Traction system | Direct drive through gearbox |
| Prime mover(s) | Pratt & Whitney Canada ST6 |
| Engine type | Gas turbine(Turboshaft) |
| Power output | 7 car:2,000 hp (1,491 kW)[1] (400 hp or 298 kW per engine) |
| Transmission | Mechanical |
| Electric system(s) | 600VDCThird rail intoGrand Central Terminalonly |
| Current collector(s) | Contact shoe |
| UIC classification | 7 car:B′1′1′1′1′1′1′B′ |
| Track gauge | 4 ft8+1⁄2in(1,435 mm) |
TheUAC TurboTrainwas an earlyhigh-speed,gas turbine trainmanufactured byUnited Aircraftthat operated inCanadabetween 1968 and 1982 and in the United States between 1968 and 1976. It was one of the firstgas turbine-powered trains to enter service for passenger traffic, and was also one of the firsttilting trainsto enter service in North America.
Description
[edit]Chesapeake & Ohio design study
[edit]A series of design studies carried out byChesapeake and Ohio Railwayin the 1950s used thesecond-generation Talgodesign for their car suspensions. The suspension arms for each neighboring pair of cars were attached to a commonbogie( "truck" ) between them, as opposed to having a pair of separate bogies for each car. The bogies rode the common curve between the two cars, centered by traction springs that centered the axle between adjoining car bodies.[2] TurboTrain cars are 2.5 feet (76 cm) lower than conventional cars, to lower thecenter of gravityin relation to the swinging point at the top of the arms. The arms included air springs to smooth out the motion, although it still felt "odd" while the train navigated short turns in switchyards and stations.[citation needed]
Like the earlier articulated trains, this meant that train lengths would be difficult to change. Their solution to this problem was to modify the power cars (engines) to allow the trains to be coupled end-to-end. Since articulated trains required "special" cars at either end anyway (to fill in the otherwise missing bogie), the C&O was double-ended, with a power car at each end. The power cars were organized with their two diesel engines on either side of the train, and the operators' cabin in a "pod" on top. This left enough room for apassagewayto run between the engines and under the pod to the nose of the car, where a coupling and doors were hidden behind a pair of movable clamshell covers.[3]That way the train could be attached front-to-end with another, providing some of the flexibility in train lengths that coupled cars offered, while still being as lightweight as a normal articulated design.[citation needed]
TurboTrain
[edit]
C&O's early work went undeveloped until the 1960s. At that time two major forces began operating that would re-invent the concept as the TurboTrain; one was theUS Department of Transportation's desire to update train service in the US as a result of theHigh Speed Ground Transportation Act of 1965,the other wasCN Rail's desire to update their passenger service with the ending of "pooled service" (withCP Rail) between Toronto and Montreal.[citation needed]
United Aircraft Corporation(UAC) purchased the C&O patents to enter into the DOT's Northeast Corridor Demonstration Project. The TurboTrain was designed by personnel of the Corporate Systems Center Division (CSC) of UAC, at Farmington, Connecticut. The design was similar to the original C&O version, but modified to use turbine power instead of diesel. The chosen engines were a modified version of thePratt & Whitney Canada PT6(also a UAC division) known as the ST6, downrated from 600 to 300 hp (447 to 224 kW). The PT6 uses a "free turbine"that acts as a torque coupler, so the new design did not require a transmission and was able to drive the powered wheels directly. The power cars had three engine bays on either side of the car and could mount engines in pairs for two to six turbines, depending on the needs of the carrier.[4]Another ST6 drove analternatorto provide'hotel' electrical powerfor the train. Each power car had a fuel capacity of 5,774 litres; 1,525 US gallons (1,270 imp gal).[5]
The turbine engines were smaller and lighter (300 pounds or 136 kilograms with accessories) than the diesels they replaced, so the original power cars ended up being much larger than needed. Instead of a major redesign, UAC re-arranged the interior of the existing layout. The control room "pod" on top was lengthened to produce a viewing area with seating, and additional seating was added along the main level as well. This produced the Power Dome Cars (PDC) that were 73 feet 3 inches (22.33 m) long (tip of nose to trailing articulated axle,[6]while the Intermediate Cars (IC) were 56 feet 10 inches (17.32 m) long (axle to axle),[6]considerably shorter than the 85 feet (25.91 m)-long conventional passenger cars of this period.[citation needed]
The ability to connect trains together remained largely unchanged, although the routing of the internal passage changed slightly to rise up into the observation area of the pod, then back down under the control room and from there to the nose.
The Turbotrains were evaluated by multiple journalists in the Canadian press as having "rail noise that substantially exceeds that of standard equipment" and having poor riding characteristics, especially on curves, with one journalist stating that "the single-axle articulation in practice negotiates curves in a series of short jerks rather than the smooth flowing motion promised in press releases".[7]
The single-axle bogies on the Turbotrain were very mechanically complex and the suspension arms were "telescopic arms which were in essence ball-bearing screw actuators; the suspension of the inside-bearing powered bogies was" especially complex "and attached to the turbines via" an intricate web of mechanical couplings and shafts ".[8]
Production and use
[edit]U.S. service
[edit]
Two Turbotrains (DOT1 and DOT2) were built at thePullman WorksinChicago.High-speed testing of the trains was performed from a base atFields Pointin Providence, Rhode Island, using track betweenRoute 128near Boston andWesterly, Rhode Island(track segments along this section, to this day[when?],are the only areas where Amtrak operatesAcelarevenue service at 150 mph).[9]
After its construction at the Pullman yards in Chicago, the Turbotrain was sent eastward on August 1, 1967, at regular speed and without passengers, toProvidence, Rhode Island,in order for UAC Aircraft Systems engineers to tear it down, study it for further development, and then eventual high-speed testing on the PRR's specially-rebuilt track betweenTrentonandNew Brunswick, New Jersey.[10][11]
In a competition with a GE poweredMetrolineron thePennsylvania Railroad's main-line between Trenton and New Brunswick, New Jersey, on December 20, 1967, one of the TurboTrains reached 170.8 mph (274.9 km/h). This remains theworld speed recordfor gas turbine-powered rail vehicles.[12]
On January 1, 1968, the TurboTrain program was transferred from CSC to Sikorsky Aircraft Division (SA) of UAC. TheUnited States Department of Transportationleased both trainsets and contracted with theNew Haven Railroadto operate them. The New Haven had been in bankruptcy since July 2, 1961; on January 1, 1969, it was absorbed into thePenn Central Railroad,which inherited the contract. On April 8, 1969, Penn Central placed the equipment in service on theNortheast CorridorbetweenBostonandNew York City.The three-car sets carried 144 people and operated at a maximum speed of 100 miles per hour (160 km/h). The TurboTrains were equipped withthird railshoesfor operation intoGrand Central Terminal.In their first year of operation the trains' on-time performance approached 90 percent. They covered the 230 miles (370 km) in three hours and 39 minutes.[13]
After railroad bankruptcies and amid threats of more, the National Railroad Passenger Corporation (Amtrak) took over passenger service for most U.S. railroads, including the Penn Central, on May 1, 1971. Amtrak continued Turbotrain service between Boston and New York, switching toPennsylvania Stationas its New York terminal. It also briefly ran Turbotrains elsewhere. Some service was from Washington, DC, through West Virginia and Ohio to Chicago.[citation needed]
In September 1976, Amtrak ceased revenue runs of Turbotrain trainsets and moved them to the Field's Point Maintenance Yard in Providence, Rhode Island, pending any possible sales toCN.[14]An additional attempt was made to sell the units to theIllinois Central,but the poor mechanical condition of the trainsets caused the deal to fall through.[9]Amtrak finally disposed of the trains in 1980.
Canadian service
[edit]
In May 1966,Canadian National Railwaysordered five seven-car TurboTrains for the Montreal-Toronto service. They planned to operate the trains in tandem, connecting two trains together into a larger fourteen-car arrangement with a total capacity of 644 passengers. The Canadian trains were built byMontreal Locomotive Works,with their ST6 engines supplied by UAC's Canadian division (nowPratt & Whitney Canada) inLongueuil, Quebec.The Canadian Turbotrains were originally planned to have been in service by the summer of 1967, but technical difficulties with the trainsets delayed passenger service entry until December 12, 1969; the primary failures concerned the auxiliary equipment and caused the power on the trains to go out.[15]
CN and their ad agency wanted to promote the new service as an entirely new form of transit, so they dropped the "train" from the name. In CN's marketing literature the train was referred to simply as the "Turbo", although it retained the full TurboTrain name in CN's own documentation and communication with UAC. A goal of CN's marketing campaign was to get the train into service forExpo 67,and the Turbo was rushed through its trials. It was late for Expo, a disappointment to all involved, but the hectic pace did not let up and it was cleared for service after only one year of testing – most trains go through six to seven years of testing before entering service.[16]
The Turbo's first demonstration run in December 1968, included a large press contingent. An hour into its debut run, the Turbo collided with a truck at a highway crossing near Kingston. Despite the concerns that lightweight trains like the Turbo would be dangerous in collisions, the train remained upright and largely undamaged. Large beams just behind the nose, designed for this purpose, absorbed the impact of the collision and limited the damage to the fiberglass clamshell doors and underlying metal. The train was returned from repairs within a week. No one was killed, though this event has been cited as a main deterrent to Canada's efforts to develop modern passenger rail.[17]
Initial commercial service started soon after. On its first westbound run the Turbo attained 104 mph (167 km/h) 10 minutes outside of Dorval. During speed runs on April 22, 1976, it achieved 140.55 mph (226 km/h) nearGananoque,the Canadian record to this day.[16]However, in regular passenger service the Turbotrains were limited to 95 mph (153 km/h) in Canada because of the Canadian route's numerous grade-crossings, estimated at 240 public highway grade-crossings and 700 agricultural or private crossings between Montreal and Toronto.[7]
Technical problems, including brake systems freezing in winter, required a suspension of service in early January 1969. Service resumed in May 1970; however, technical problems again caused the Canadian National to withdraw all Turbotrains from service again in February 1971.[7]At this point, the CN management publicly expressed great dissatisfaction with these trainsets, with one vice-president claiming, "the trains never did measure up to the original contract and they haven't yet"; the manufacturerUnited AircraftCompany publicly claimed that CN suspended Turbotrain service for relatively minor technical problems.[7]Railroad analysts, including Geoffrey Freeman Allen (editor ofJane's World Railways), noted that the Turbotrains employed too many advanced, derived technologies which had been packed in "without extended practical evaluation in railroad conditions. From transmission to suspension to auxiliaries, far too many vital components seemed to have been translated straight from the drawing board to the series production line.[18]
During the "downtime" CN changed their plans, and in 1971 a rebuild program began, converting the five seven-car sets to three nine-car sets. Several minor changes were added. The engine exhaust fouled the roof windows of the power car, so these were plated over, and a grill was added to the front of the engines just behind the clamshell doors. The remaining power and passenger cars were sold to Amtrak as two four-car sets. One of those sets sideswiped a freight train on a test run in July 1973 and three of the cars were written off.[19]The sale of the surviving Power Dome Coach car was cancelled, and it stood spare until a sister unit caught fire and burned in September 1975.[19]
The three rebuilt 9-car sets entered service for CN in late 1973. CN ran the Turbos from Toronto-Montreal-Toronto with stops atDorval,KingstonandGuildwoodon theQuebec City-Windsor Corridor.Original train numbers were Train 62 which left Toronto at 12:45 p.m. and arrived in Montreal at 4:44 p.m. Train 63 left Montreal at 12:45 p.m. and arrived in Toronto at 4:44 p.m. (Both were daily trains.) Train 68 left Toronto at 6:10 p.m. and arrived in Montreal at 10:14 p.m., while Train 69 left Montreal at 6:10 p.m. and arrived in Toronto at 10:14 p.m. (The evening trains did not run on Saturdays.) The trip took 3 hours and 59 minutes downtown-to-downtown on trains 62 and 63, while the evening trains were slightly slower, taking four hours and four minutes to complete the run. Turbo service was about a full hour faster than CN's previous express trains, the "Rapido".However, even the runs made by the Turbotrains in the late 1970s still fell substantially short of their intended 120 mph design speed; the fastest average speed for the Turbotrain in regular scheduled Canadian passenger service was an intermediate booking fromKingstontoGuildwood(102 minutes for the 145.2 miles between the two cities nonstop at an average speed of 85.4 mph (137.4 km/h).[20]
By 1974, after substantial modifications of the gearbox device and pendular suspension, and reinforcement of the sound insulation, the Turbotrains finally took up untroubled service.[20]CN operated the Turbos until 1978, when their passenger operations were taken over byVia Rail,who continued the service.[21]
One of the three remaining trains developed an oil leak and caught fire on the afternoon run from Montréal to Toronto on May 29, 1979.[21]It was stopped west of Morrisburg. It took some time for the fire engines to arrive as they were forced to drive on the trackbed. The power car and two coaches were totally destroyed. There were no injuries, although rapid disembarkation was needed. The train was eventually towed back to the Turcot yard in Montréal and remained there for several years, covered by tarpaulins.[citation needed]
The Turbo's final run was on October 31, 1982, when they were replaced by the all-CanadianLRCtrainsets fromBombardier Transportation,which employed conventionaldiesel-electric locomotives.Although they had an early reputation for unreliability, according to CN's records, the rebuilt TurboTrains had an availability rate of over 97% for their careers with CN and Via.[16]The LRC suffered from similar teething problems, notably with the tilt system locking the cars in a tilted position.[citation needed]
The withdrawal of the Turbotrains was also precipitated by the rise in oil prices during the 1973 oil embargo and the following years, which destroyed "one of gas turbine traction's prime advantages, fuel cost economy".[clarification needed][20]
None of the UAC TurboTrains were preserved.
See also
[edit]Footnotes
[edit]- ^Sikorsky Archives."Sikorsky Product History - Turbo Train".www.sikorskyarchives.com.
- ^US patent 3424105,Alan R. Cripe, "Articulated Car Single Axle Truck", issued 1969-01-28
- ^US patent 2859705,Alan R. Cripe, "Motor Train Power Unit, Passageway, and Cab Structure", issued 1958-11-11
- ^"TurboTrain Equipment Location Diagrams. Model TMT-7D".United Aircraft of Canada.April 1969.
- ^Lewis (1983),p. 32–33.
- ^abMerrilees (1995),facing p.28.
- ^abcdAllen (1992),p. 142.
- ^Allen (1992),p. 140.
- ^abShron, Jason (2008).TurboTrain: A Journey.Rapido Trains Inc.ISBN978-0-9783611-0-5.
- ^"Fast Train Project Chugs at Half Speed", by Louis Dombrowski,Chicago Tribune,July 27, 1967, p2-18
- ^"Turbotrain Due in State Today",Bridgeport (CT) Post,August 3, 1967, p2
- ^"Dedication of plaque commemorating high speed rail in America"on the National Capital Land Transportation Committee's website
- ^"Turbo train's first birthday"(PDF).Penn Central Post.May 1970. Archived fromthe original(PDF)on 2014-10-06.
- ^"Amtrak peddling its headaches".Eugene Register-Guard.April 10, 1977.
The trains were taken from service last September and now are idle at the Field's Point Maintenance Yard near Providence, RI
- ^Allen (1992),p. 141-142.
- ^abcJerry Langton,"Model-train manufacturer on the right track",8 December 2008
- ^Paulsen, Monte (12 June 2009)."Off the Rails".Archivedfrom the original on 8 Aug 2020.Retrieved10 February2010.
- ^Allen (1992),p. 142-143.
- ^abMerrilees (1995),p. 28.
- ^abcAllen (1992),p. 143.
- ^abBateman, Chris (9 December 2015)."Remembering the ill-fated CN Turbo train".Spacing Magazine.Retrieved21 February2017.
References
[edit]- Allen, Geoffrey Freeman (1992).The Worlds' Fastest Trains: From the Age of Steam to the TGV.Sparkford, Nr Yeovil, Somerset (United Kingdom): Patrick Stephens Limited.ISBN978-1852603809.
- Canadian National system time table October 27, 1968, to April 26, 1969.
- Lewis, Donald C. (1983).Rail Canada, volume 4: Paint diagrams and outline drawings for Via Rail's locomotive and passenger car fleet.Vancouver, British Columbia: Lunch Pad Distributors, Inc.ISBN0-920264-08-5.
- Merrilees, Andrew (1995). Lepkey, Gary; West, Brian (eds.).Canadian National Railways Passenger Equipment 1867–1992.Ottawa, Ontario: Bytown Railway Society, Inc.ISBN0-921871-01-5.
- Shron, Jason (2008).TurboTrain: A Journey.Rapido Trains Inc.ISBN978-0-9783611-0-5.
External links
[edit]
- Video |The Jet Train Is Here(29:56) -National Educational Television and Radio Center
- 1967 TurboTrain press conference- complete audio of the joint CN/UAC/MLW press conference announcing the TurboTrain.
- Sikorsky Archives- A brochure bySikorsky Aircraftannouncing the TurboTrain before it entered service. (archive.org)
- HO Scale models of the United Aircraft Turbo
- High Speed Rail Canada CN Turbo Train Public Archives