| The Lockheed L-1329 JetStar is a business jet | | | | down for landing, and the trim is provided by pivoting |
| produced from the early 1960s through the 1970s. It | | | | the entire vertical stabilizer, which is considered an |
| originated as a private project attempting to win a | | | | odd characteristic by experienced aircraft designers. |
| United States Air Force contract that was later | | | | The JetStar is considered a relatively heavy aircraft |
| dropped. Lockheed then decided to continue the | | | | for its class. Weighting 25,250 lb when empty and |
| project for the business market. The first JetStar | | | | having a max takeoff weight of 44,500 lb, it has a |
| prototype first flew on September 4, 1957. | | | | maximum cruising speed of 0.8 Mach at 21,000 feet, |
| Two prototypes were initially constructed using | | | | and a range of about 2,500 miles with a 3,500 lb |
| Bristol Siddeley Orpheus turbojets; one of these was | | | | payload. |
| experimentally re-engined with a set of four Pratt | | | | Ithas a crew of two pilots and the cabin offers |
| & Whitney JT12 in 1959, implying a later | | | | seating for up to ten passengers. The length of the |
| selection of the JT12 for production aircraft. The first | | | | fuselage is 60 ft 5 in, with a 54 ft 5 in wingspan and |
| of these prototypes flew in the mid 1960's. | | | | a height of 20 ft 5 in. The aircraft has a service |
| The JetStar was the first business jet to enter | | | | ceiling of 43,000 ft. |
| service when the first civil configured one was | | | | The subsequent JetStar II differs from the earlier |
| delivered in early 1961. Meanwhile the JetStar entered | | | | aircraft primarily in its four Garrett TFE731 turbofans |
| service with the USAF in 1962 as the C140 naval | | | | with their significantly improved fuel consumption, |
| calibration aircraft and the VC140 VIP transport in | | | | resulting in substantial improvements in operating |
| late 1961. | | | | costs, range and lower noise levels, while more |
| Besides its fairly typical business jet layout, the | | | | power allows a higher maximum takeoff weight. |
| JetStar is distinguishable from other small jets by its | | | | This version is generally similar, with a number of |
| four engines, mounted on the rear of the fuselage, | | | | detail changes. The cockpit area has some |
| and the fuel tanks fixed to the wings. It has a | | | | modifications, larger engines, and the fuel tanks are |
| cruciform tail and a thirty degree swept wing, which | | | | larger and sit with their upper surfaces flush with the |
| features large fuel tanks at about half-span. The | | | | wing, rather than being centered on it. The first of |
| horizontal stabilizer is mounted at the top of the | | | | these flew on August 18, 1976, and has remained in |
| vertical stabilizer. A speed brake is located on the | | | | production until 1979. |
| underside of the fuselage to help slow the aircraft | | | | |