Pratt & Whitney F 100-220U afterburner turbofan engine) has a first turnover of more than 1000 hours and a total service life of nearly 4,000 hours.
Normal service life
X-47B is the first "tailless, jet drone" in human history, which is completely controlled by computer without human intervention. It is also the first stealth bomber that can take off from an aircraft carrier and land on its own.
The X-47B successfully made its first flight at Edwards Air Force Base in California on February 4th, 20 1 1. The test flight * * * lasted about 29 minutes, and the highest climbing altitude of the aircraft was about 1 500m. The X- 47B unmanned aircraft was developed by Northrop Grumman, with a design speed of 800km/h and a maximum flying altitude of1.2000m.. [ 1]
The X-47B UAV has a high air combat system, which can provide operational support for the US military to carry out all-weather combat missions. For the first time, the X-47B unmanned combat aircraft is required to have good stealth performance and battlefield survivability, and for the second time, it is required to carry all kinds of sensing equipment and internal weapons and equipment loads, which can meet the needs of joint operations and network operations. Then the plane should also be able to refuel in the air to improve the coverage of the battlefield and carry out long-distance flights.
Land-based inspection, flight test of alternative aircraft and comprehensive laboratory test of X-47B UAV show that the new aircraft poses great challenges to pilots. In the recent test of X-47B UAV, the propulsion acoustics and engine starting sequence did not reach the required performance level. Before taking further action, engineers need to troubleshoot, make relevant adjustments and increase laboratory and aircraft carrying tests.
Northrop Grumman has started to manufacture the X-47B Joint Unmanned Air Combat System (J-UCAS), which is the first unmanned reconnaissance attack aircraft in the world that can be used for both land-based and aircraft carriers. X-47B related parameters:
Aircraft length: 38.2 feet (about11.64m).
Span: 62. 1 ft (about18.92m)
Machine height: 3 3. 10/0m
Empty weight: 14000 lbs (about 6350 kg)
Maximum takeoff weight: 44,567 pounds (about 202 15 kg)
Service limit: 40,000 feet (12192m).
Maximum thrust of engine: 79. 1 kN (about 8070 kg). Model: Pratt & Whitney F 100-220U afterburner turbofan engine)