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LTV XC-142

United States (1964)
Picture of LTV XC-142 Vertical / Short Take-Off and Landing (V/STOL) Experimental Aircraft
Picture of LTV XC-142 Vertical / Short Take-Off and Landing (V/STOL) Experimental Aircraft Picture of LTV XC-142 Vertical / Short Take-Off and Landing (V/STOL) Experimental Aircraft
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The LTV XC-142 was an American project looking into the viability of a vertically-launching and landing aircraft system for the purposes of transport.


Detailing the development and operational history of the LTV XC-142 Vertical / Short Take-Off and Landing (V/STOL) Experimental Aircraft.  Entry last updated on 3/30/2017. Authored by Staff Writer. Content ©www.MilitaryFactory.com

The 1960s and 1970s were decades of military aviation filled with a plethora of experimentation centering on Vertical/Short Take-Off and Landing (V/STOL) aircraft. Not until the British Harrier in the late 1960s was the dream officially realized in the military sphere. The United States, for its part during the period, undertook its own practical testing of such aircraft and attempted to apply it to more tactically-minded systems than just fighter / strike platforms. The LTV XC-142 was a product of such an initiative and these prototype aircraft represented a V/STOL-capable transport for possible military service.

An initiative born in the late 1950s spurred the major American military services to develop a joint-service V/STOL platform to support existing helicopter-type operations and feature heavily in transporting goods and troops near the fighting lines. Range was of particular concern but speed was also required to move elements from Point A to Point B in short order. The United States Navy was chief lead of the program which became known under the name of "Tri-Service Assault Transport Program".

The original specifications were, of course, revised several times to satisfy each service branch need and Vought's design submission was ultimately accepted for development. A contract covering five total, flyable prototypes was delivered in early-1962 with a targeted first-flight sometime in 1964. The developmental aircraft series was designated XC-142 and the Vought brand label soon switched to LTV ("Ling-Temco-Vought") as Vought was absorbed into a new corporation (1961).

A total of five flyable XC-142A aircraft were built for the program which ultimately involved all of the major service branches as well as NASA. A first-flight was recorded on September 29th, 1964 and this outing saw the aircraft obtain conventional flight. A first Vertical Take-Off and Landing (VTOL) action followed in January of 1965. The aircraft were pushed through basic flight envelopes as well as more mission-minded actions to better simulate operational service.


Picture of the LTV XC-142 Vertical / Short Take-Off and Landing (V/STOL) Experimental Aircraft
Picture of the LTV XC-142 Vertical / Short Take-Off and Landing (V/STOL) Experimental Aircraft


Externally, the aircraft was given a short, deep slab-sided fuselage with a heavily glazed frontal section for optimal viewing out-of-the-cockpit. The wings were fitted high on the fuselage sides to better clear the large four-bladed propeller systems. Two engines were set along each wing and the whole wing system was given a "tilting" feature in which the engines could face completely vertically for the needed VTOL and conventional forward flight actions. The tail unit consisted of a single vertical fin and mid-mounted horizontal planes. The undercarriage, wholly retractable, was of a tricycle arrangement with double-wheeled main legs and a nose leg. The legs are of short length which gave the aircraft a very low ground profile. A crew of two piloted the vehicle while a third member, the loadmaster, would have made up the final crewman in operational service. Internally, the aircraft was set to carry up to 32 combat-ready infantrymen or up to 8,000lb of cargo. In the MEDEVAC role it would have been outfitted to serve 24 patient litters and staff.

As built, the XC-142A was powered by 4 x General Electric T64-GE-1 turboprop engines developing 2,850 to 3,080 horsepower each. In conventional flight, this propelled the aircraft to speeds of 400 - 430 miles per hour (cruising was closer to 235 - 288 mph). Combat range was 470 miles (3,800 miles ferry range) and the aircraft's service ceiling reached 25,000 feet. Operating weight was 44,500lb and rate-of-climb peaked at 6,800 feet-per-minute.

During testing, issues centering on the wing elements and drive shaft components surfaced which created a host of issues for pilots. Hard landings were not uncommon occurrences and controlling the aircraft proved difficult. At least three were killed in a crash of one of the prototypes. This sort of setback worked against the promising venture and things were made worse when the USN eventually bowed out of the program. The USAF championed a production-quality "C-142B" form but this was never realized. After the tri-services initiative officially failed to produce a viable product, the vehicle was passed on to NASA for additional testing. A civilian-market model was also entertained at one point and this was to carry the name of "Downtowner" while seating up to 50 passengers.

In the end, the XC-142 served as an important technology stepping stone to more modern, advanced systems which finally did go on to see operational service - the Boeing V-22 "Osprey" being a child of decades of work and this program itself not immune to fatalities and mechanical difficulties. Of the five XC-142 airframes completed, just one survived the years that followed and ended as a museum showpiece as the National Museum of the United States Air Force in Dayton, Ohio.






Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

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Relative Maximum Speed Rating
Hi: 500mph
Lo: 250mph
    This entry's maximum listed speed (432mph).

    Graph average of 375 miles-per-hour.
City-to-City Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the LTV XC-142A's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
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Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
5
5


  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
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National Flag Graphic
Origin: United States
Year: 1964
Type: Vertical / Short Take-Off and Landing (V/STOL) Experimental Aircraft
Manufacturer(s): Ling-Temco-Vought (LTV) - USA
Production: 5
Global Operators:
United States (cancelled)
Historical Commitments / Honors:

Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.
Measurements and Weights icon
Structural - Crew, Dimensions, and Weights:
Unless otherwise noted the presented statistics below pertain to the LTV XC-142A model. Common measurements, and their respective conversions, are shown when possible.

Operational
CREW


Personnel
3


Dimension
LENGTH


Feet
58.07 ft


Meters
17.7 m


Dimension
WIDTH


Feet
67.59 ft


Meters
20.6 m


Dimension
HEIGHT


Feet
26.08 ft


Meters
7.95 m


Weight
EMPTY


Pounds
22,641 lb


Kilograms
10,270 kg


Weight
LOADED


Pounds
44,600 lb


Kilograms
20,230 kg

Engine icon
Installed Power - Standard Day Performance:
4 x General Electric T64-GE-1 turboprop engines developing 2,850 to 3,080 horsepower each and driving four-bladed propeller units.

Performance
SPEED


Miles-per-Hour
432 mph


Kilometers-per-Hour
695 kph


Knots
375 kts


Performance
RANGE


Miles
3,790 mi


Kilometers
6,100 km


Nautical Miles
3,294 nm


Performance
CEILING


Feet
25,000 ft


Meters
7,620 m


Miles
4.73 mi


Performance
CLIMB RATE


Feet-per-Minute
6,800 ft/min


Meters-per-Minute
2,073 m/min

Armament - Hardpoints (0):

None.
Variants: Series Model Variants
• XC-142 - Base Series Designation
• XC-142A - Prototype model designations; five complete; one crashed during testing.
• C-142B - Proposed USAF production-quality version with some revisions.
• "Downtowner" - Proposed 50-seat civilian market passenger hauler.