Pratt & Whitney Canada PW800
|Manufacturer||Pratt & Whitney Canada|
|First run||April 2012|
|Major applications||Gulfstream G500/G600|
The Pratt & Whitney Canada PW800 is a turbofan engine in the 10,000–20,000 lbf (44–89 kN) thrust class, under development by Pratt & Whitney Canada. Intended for the regional jet and business jet market, the gear-less PW800 share a common core with the larger, geared PW1000G. The first variants were certificated on February 15, 2015 to power the new Gulfstream G500/G600.
The development of the PW800 stretches back to demonstration projects in 1999, soon after the development of the PW600 very light engine and the PW300 business jet engine. After the Advanced Technology Fan Integrator demonstrator first run on March 17, 2001, Which became the PW1000G, Pratt & Whitney Canada was searching for a launch customer for the initially geared PW800, in the 10,000–19,000 lbf (44–85 kN) thrust range, bridging the gap between P&WC's PW300 and P&W's PW6000, intended for the regional- and business-jet engine market.
Pratt & Whitney Canada showcased at the 2007 Paris Air Show its PW-10X engine development, within the 10,000-pound-thrust-class among the Rolls-Royce RB282, General Electric CF34 successor which became the General Electric Passport, Snecma Silvercrest and Honeywell pushing its HTF10000 development of the HTF7000.
In 2008, the PW810 variant was announced as the engine for the Cessna Citation Columbus business jet with an anticipated first flight of 2011. However Cessna canceled the program in 2009, which halted the PW810 program, but Pratt & Whitney continued the PW800 series development.
Pratt & Whitney announced that the core high pressure spool with eight compressor and two turbine stages should start testing before the end of 2009. In December 2009, PWC announced that the core testing had begun. It made its first run in April 2012 and first flew in April 2013.
On October 20, 2014, the engine was selected by Gulfstream for its new Gulfstream G500/G600. Pratt & Whitney Canada (P&WC) announced on February 17, 2015 that it had received Transport Canada type certification for its PW814GA and PW815GA engines, which will power the new Gulfstream G500 (5,000 nmi range) and G600 (6,200 nmi range) business jets, respectively.
On May 18, 2015, the Gulfstream G500 took its first flight using the PW814A engine after the PW800 engine family has surpassed 3,600 hours of full engine testing, including rigorous endurance testing that simulates a multitude of aircraft missions and environments, and more than 470 hours on P&WC's 747 Flying Test Bed.
The United States Federal Aviation Administration validated the PW814GA and PW815GA type certificate on February 24, 2017. In May 2017, 13,000h of testing were completed, including 3,500h in flight.
The engine will feature the Technology for Advanced Low NOx (TALON) X combustor, allowing it to exceed International Civil Aviation Organization (ICAO) standards for NOx by 50%, Carbon monoxide (CO) by 35% and that the engine should meet upcoming stage IV aircraft noise requirements. A previous version of the TALON combustor is in service with the Pratt & Whitney PW4000.
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- Type: Twin spool Turbofan
- Length: 105.8 in (269 cm) (flange to flange) / 130.44 in (331.3 cm) (fan spinner face to aft tail cone)
- Diameter: 50 in (130 cm) fan
- Dry weight: 3,135.7 pounds (1,422.3 kg) (dry) 
- Compressor: 20-blade, single-piece Single-stage fan, 3-stage LP and 8-stage HP compressor
- Turbine: 2 stage HP and 3 stage LP turbine LP: max 6,240 rpm, HP: max 24,043 rpm
- Maximum thrust: PW814GA: 15,429 lbf (68.63 kN), PW815GA: 16,011 lbf (71.22 kN) (33°C flat rated)
- Bypass ratio: 5.5:1 (approx)
- Turbine inlet temperature: 965 °C / 1769 °F (ITT) 
- Thrust-to-weight ratio: 4.92 - 5.11
- Related development
- Comparable engines
- Guy Norris (6 Oct 2008). "Five Engine Companies Chase The Same Bizjet Market, But Changes Are Underway". Aviation Week & Space Technology.(subscription required)
- "Pratt & Whitney Canada's geared turbofan seeks launch customer". Flight Global. 10 April 2001.
- Martin Agüera (April 21, 2003). "Non-European Engine May Power A400M".
- "USA blasts A400M engine choice". Flight International. 13 May 2003.
- Julian Moxon (June 19, 2007). "PWC is going green on PW-10X". Aviation International News.
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- Niall O'Keefe (9 Oct 2009). "PW800 core tests imminent: Pratt & Whitney". Flight International.
- "Pratt & Whitney Begins Testing of Advanced Core for PurePower(R) Engine Family" (Press release). Pratt & Whitney Canada. 21 Dec 2009.
- Guy Norris (May 26, 2016). "PW800 For Gulfstream G600 Progresses". Aviation Week.
- Guy Norris (Oct 20, 2014). "Gulfstream's Pratt & Whitney Choice Challenges Rolls-Royce's Dominance". Aviation Week.
- "Pratt & Whitney Canada's PurePower® PW814GA And PW815GA Engines Receive Type Certification To Power New Gulfstream Business Jets" (Press release). Pratt & Whitney Canada. Feb 17, 2015.
- "Successful Gulfstream G500 First Flight: A New Milestone for PurePower® PW800 Engines" (Press release). Pratt & Whitney Canada. May 18, 2015.
- "PW814GA, PW815GA type certificate data sheet" (PDF). FAA. February 24, 2017.
- U.S. FAA Gives Nod to G500, G600 P&WC Engines
- Murdo Morrison (19 May 2017). "Rivals for power in the business aviation engine market". Flight Global.
- Thierry Dubois (October 16, 2007). "Two new contenders vie to power future RJs". Aviation International News.
- "P&WC PW800". Jane's Aero Engines. 13 Oct 2009.
- "Leading the next-generation business aircraft engine market". Air Insight. May 23, 2016.
- "PW800". MTU Aero Engines.
- Fred George (Nov 1, 2014). "Gulfstream Unveils G500 and G600". Business & Commercial Aviation. Aviation Week.