Aerospace

First made-in-china large commercial aircraft , C919 rolled off production line.

The Commercial Aircraft Corp of China (Comac) said on Monday it had rolled out its C919 narrow body jet, which is meant to rival similar models from Airbus Group and Boeing Co.

State television also showed footage of the aircraft rolling off the assembly line in Comac’s Shanghai factory. In a statement, the company said it had already received 517 orders for the aircraft mainly from domestic firms.

About C919

“C919″is the short form of trunk liner code for “COMAC919”. COMAC is the acronym of the Commercial Aircraft Corporation of China, Ltd. The letter “C” is the first letter of both “COMAC” and “China”. It indicates that this trunk liner program is the will of China and her people. It is a short-medium range commercial trunk liner that can claim indigenous intellectual property. Its all-economy class layout entails 168 seats, and the hybrid class layout 156 seats. The basic version is designed to cover a range of 4,075 km, while the enhanced version can stretch to 5,555 km. Such designs may satisfy the operating demands for different routes. Its economic life is designed to be 90,000 flying hours/30 calendar years.

Features

Safety:

The design, development, and airworthiness examination of the airplane are completely based on international civil aviation rules and regulations and airworthiness standards.
Economics:

Fuel consumption and direct operating cost per seat per kilometer are lower than those of similar existing airplanes.
Comfort:

Broader cabins and wider seats plus advanced system technology to improve comfort.

Environmentally friendly:

New engine to meet noise and pollutant discharge requirements.

Product family:

Covering basic version, extended version, shortened version, cargo version, special version and corporate version.

The Comac C919 is a family of 158-174 seat narrow-body twin-engine jet airliners built by the Commercial Aircraft Corporation of China (Comac). It is the largest commercial airliner designed and built in China since the defunct Shanghai Y-10. Its first flight is expected to take place in end of 2015, with first deliveries scheduled for late 2018.

Dimensions

Dimensions of the C919 are very similar to the Airbus A320, possibly to allow for a common pallet to be used. Its fuselage will be 3.96 metres (13 feet) wide, and 4.166 metres (13 feet, 8 inches) high, producing a cross-section of 12.915 square metres (139 square feet). The wingspan will be 33.6 metres (110 feet, 3 inches), or 35.4 metres (116 feet, 3 inches) if winglets are included.

Payload

Payload will be 20.4 metric tonnes. Its cruise speed will be Mach 0.785 and it will have a maximum altitude of 12,100 metres (39,800 feet).

capacity

There will be two variants. The standard version will have a range of 4,075 km (2,200nm), with the extended-range version able to fly 5,555 km (3,000nm).

According to a film shown by Comac at the 2010 Zhuhai Airshow, the company plans to build six different models of the aircraft: a base passenger aircraft with 168 seats, as well as stretched and shrunk passenger versions, business jet and freighter models, and a type designated only as “special” .

Price tag

The Comac C919 is intended to be a new entrant in the commercial airliner market specifically targeted at low-cost airlines. Fuel price increases are especially damaging to the low-cost flying model, leading these airlines to renew their fleets frequently. This ensures optimal fuel performance and reliability across a single-type fleet. Direct competitor – Boeing 737 unit cost of US$ 78.3-108.3 million, means that target price for this airplane should be lower. The Airbus A320 has a wider price range, from US$71.9 million to US$120.5 million. The Comac developers have not announced a price tag for each plane, although based on industry speculation current orders for 2012 could be worth more than US$26 billion. This with 2012 orders for 380 examples, lead to projected average price of about $68 million.

Total no of orders 517 (as of 2015)

At the 2015 Paris Air Show, Ping An Leasing signed a letter of intent for 50 C919s.This deals makes the Shanghai-based Chinese lessor one of Comac’s largest customers. In addition to Ping An Leasing, Puren Group also signed a letters of intent for seven C919s and seven ARJ21s, intended for the start-up Puren Airlines.Also during that time Nepal Airlines and Air India was interested in acquiring 2-3 to replace older aircraft.

Design and assembly of the aircraft done in Shanghai, using foreign-made jet engines and avionics. However, China has expressed its desire to produce a domestically made engine for the C919. The center wing box, outer wing box, wing panels, flaps and ailerons are planned to be built in Xi’an, China. The center fuselage sections are planned to be built in Hongdu, China.The airframe will be made largely of aluminium alloy, while the center wing box also makes use of carbonfiber composites.

CFM International will supply a version of the LEAP engine, the LEAP-1C, to power the aircraft. The engine’s nacelle, thrust reverser and exhaust system will be provided by Nexcelle, with such features as an advanced inlet configuration, the extensive use of composites and acoustic treatment and an electrically operated thrust reverser. Michelin will supply Air X radial tyres.

Dimensions

Payload

Payload will be 20.4 metric tonnes. Its cruise speed will be Mach 0.785 and it will have a maximum altitude of 12,100 metres (39,800 feet).

capacity

There will be two variants. The standard version will have a range of 4,075 km (2,200nm), with the extended-range version able to fly 5,555 km (3,000nm).

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Aerospace

Boeing Transfers Rocket Stage to NASA, Paving Way for Human Moon Mission

Image:Boeing

Boeing has achieved a significant milestone by providing NASA with the second core stage of the Space Launch System (SLS) rocket.

This crucial component, crafted at NASA’s Michoud Assembly Facility (MAF), is set to propel the Artemis II crew into lunar orbit, marking humanity’s return to deep space after a 50-year hiatus.

The monumental Boeing-built rocket stage, the largest element of the Artemis II mission, will embark on a journey aboard the Pegasus barge, traveling 900 miles to NASA’s Kennedy Space Center.

Comparison of two legendary aircraft B777x vs B747 aircraft:Click here

Upon arrival, it will be meticulously integrated with other essential Artemis II components, including the upper stage, solid rocket boosters, and NASA’s Orion spacecraft within the iconic Vehicle Assembly Building. This intricate integration process is a vital step toward the eagerly anticipated Artemis II launch, slated for 2025.

“Boeing-built products helped land humankind on the moon in 1969, and we’re proud to continue that legacy through the Artemis generation,” remarked Dave Dutcher, vice president and program manager for Boeing’s SLS program. “Together, with NASA and our industry partners and suppliers, we are building the world’s most capable rocket and paving the way to deep space through America’s rocket factory in New Orleans.”

NASA, Lockheed Martin Reveal X-59 Quiet Supersonic Aircraft:Click here

The delivery of Core Stage 2 marks a significant achievement in the evolution of the SLS rocket. Towering over 200 feet and powered by four RS-25 engines, this core stage, coupled with two solid-fueled booster rockets, will generate a staggering 8.8 million pounds of thrust. This immense power is crucial to launching Artemis II and future missions into the vast expanse of space.

The SLS rocket stands unparalleled in its capability to transport both crew and substantial cargo to the moon and beyond in a single launch. Its extraordinary capacity will facilitate the delivery of human-rated spacecraft, habitats, and scientific missions to destinations including the moon and Mars, ushering in a new era of space exploration.