Power-to-weight ratio
Heat engines and heat pumps
Thermal energy is made up from molecular kinetic energy and latent phase energy. Heat engines are able to convert thermal energy in the form of a temperature gradient between a hot source and a cold sink into other desirable mechanical work.

Power-to-weight ratio

Section Title: Heat engines and heat pumps
Table Section Text: Thermal energy is made up from molecular kinetic energy and latent phase energy. Heat engines are able to convert thermal energy in the form of a temperature gradient between a hot source and a cold sink into other desirable mechanical work.

Heat Engine/Heat pump type	Peak Power Output	Power-to-weight ratio	Example Use

SI	English	SI	English

Wärtsilä RTA96-C 14-cylinder two-stroke Turbo Diesel engine	80,080 kW	108,920 hp	0.03 kW/kg	0.02 hp/lb	Emma Mærsk container ship

Suzuki 538 cc V2 4-stroke gas (petrol) outboard Otto engine	19 kW	25 hp	0.27 kW/kg	0.16 hp/lb	Runabout boats

DOE/NASA/0032-28 Mod 2 502 cc gas (petrol) Stirling engine	62.3 kW	83.5 hp	0.30 kW/kg	0.18 hp/lb	Chevrolet Celebrity 1985

GM 6.6 L Duramax LMM (LYE option) V8 Turbo Diesel engine	246 kW	330 hp	0.65 kW/kg	0.40 hp/lb	Chevrolet Kodiak, GMC Topkick

Junkers Jumo 205A opposed-piston two-stroke Diesel engine	647 kW	867 hp	1.1 kW/kg	0.66 hp/lb	Ju 86C-1 airliner, B&V Ha 139 floatplane

GE LM2500+ marine turboshaft Brayton gas turbine	30,200 kW	40,500 hp	1.31 kW/kg	0.80 hp/lb	GTS Millennium cruiseship, QM2 ocean liner

Mazda 13B-MSP Renesis 1.3 L Wankel engine	184 kW	247 hp	1.5 kW/kg	0.92 hp/lb	Mazda RX-8

PW R-4360 71.5 L 28-cylinder supercharged Radial engine	3,210 kW	4,300 hp	1.83 kW/kg	1.11 hp/lb	B-50 Superfortress, Convair B-36

C-97 Stratofreighter, C-119 Flying Boxcar

Hughes H-4 Hercules "Spruce Goose"

Wright R-3350 54.57 L 18-c s/c Turbo-compound Radial engine	2,535 kW	3,400 hp	2.09 kW/kg	1.27 hp/lb	B-29 Superfortress, Douglas DC-7

C-97 S/f prototype, Kaiser-Frazer C-119F

O.S. Engines 49-PI Type II 4.97 cc UAV Wankel engine	0.934 kW	1.252 hp	2.8 kW/kg	1.7 hp/lb	Model aircraft, Radio-controlled aircraft

JetCat SPT10-RX-H UAV turboshaft	9 kW	12 hp	3.67 kW/kg	2.24 hp/lb	Model aircraft, Radio-controlled aircraft

GE LM6000 marine turboshaft Brayton gas turbine[disputed – discuss]	44,700 kW	59,900 hp	5.67 kW/kg	3.38 hp/lb	Peaking power plant

GE CF6-80C2 Brayton high-bypass turbofan jet engine	Boeing 747, 767, Airbus A300

BMW V10 3L P84/5 2005 gas (petrol) Otto engine	690 kW	925 hp	7.5 kW/kg	4.6 hp/lb	Williams FW27 car, Formula One auto racing

BMW i4 1.490L M12 engine 1987 gas (petrol) Otto engine	1030 kW	1,400 hp	8.25 kW/kg	5.07 hp/lb	Arrows A10 car, Formula One auto racing

GE90-115B Brayton turbofan jet engine[disputed – discuss]	83,164 kW	111,526 hp	10.0 kW/kg	6.10 hp/lb	Boeing 777

PWR RS-24 (SSME) Block II H2 Brayton turbopump	63,384 kW	85,000 hp	138 kW/kg	84 hp/lb	Space Shuttle (STS-110 and later)

PWR RS-24 (SSME) Block I H2 Brayton turbopump	53,690 kW	72,000 hp	153 kW/kg	93 hp/lb	Space Shuttle

Top Fuel Dragster Engine	8203 kW	11,000hp	36.46 kW/kg	22.2 hp/lb	US Army Top Fuel Dragster

Sentence(s)

The turbopump produces 72,000 hp (53.6 MW) for a power-to-weight ratio of 153 kW/kg (93 hp/lb).

final_sentence: The turbopump produces 72,000 hp (53.6 MW) for a power-to-weight ratio of 153 kW/kg (93 hp/lb).