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At Mach 0.65, u is 65% of the speed of sound (subsonic), and, at Mach 1.35, u is 35% faster than the speed of sound (supersonic). An F/A-18 Hornet creating a vapor cone at transonic speed just before reaching the speed of sound. The local speed of sound, and hence the Mach number, depends on the temperature of the surrounding gas.
= 9.806 65 kilonewtons (kN) ≈ 2 204.623 pounds-force (lbf) [note 3] ≈ 0.984 2065 long tons-force [note 4] ≈ 1.102 3113 short tons-force [note 5]
An unusual addition to the R-25 was an emergency mode thrust boost which increased the compressor speed to 106% and also increased the afterburner fuel flow with the addition of a second afterburner fuel pump. Thrust was increased to 96.5 kilonewtons (21,700 lb f) below an altitude of 2,000 metres (6,600 ft). The time limit for its use was 1 ...
In the US, torque is most commonly referred to as the foot-pound (denoted as either lb-ft or ft-lb) and the inch-pound (denoted as in-lb). [ 17 ] [ 18 ] Practitioners depend on context and the hyphen in the abbreviation to know that these refer to torque and not to energy or moment of mass (as the symbolism ft-lb would properly imply).
The designation for a specific motor looks like C6-3.In this example, the letter (C) represents the total impulse range of the motor, the number (6) before the dash represents the average thrust in newtons, and the number (3) after the dash represents the delay in seconds from propelling charge burnout to the firing of the ejection charge (a gas generator composition, usually black powder ...
Maximum speed without external stores is approximately Mach 1.8 in supercruise at military/intermediate power and greater than Mach 2 with afterburners. [ N 16 ] With 18,000 lb (8,165 kg) of internal fuel and an additional 8,000 lb (3,629 kg) in two 600-gallon external tanks, the jet has a ferry range of over 1,600 nmi (1,840 mi; 2,960 km). [ 142 ]
This would give the -900 a 7,000 nmi (12,964 km; 8,055 mi) range to better compete with the 787-9’s 7,635 nmi (14,140 km; 8,786 mi) [69] On the -800 at FL400, cruise fuel flow at Mach 0.82 and low weight is 4.7 to 5.2 t (10,000 to 11,000 lb) per hour at a higher weight and Mach 0.83.
The RFP also specified a maximum speed of 460 mph (400 kn; 740 km/h), takeoff distance of 4,000 feet (1,200 m), external load of 16,000 pounds (7,300 kg), 285-mile (460 km) mission radius, and a unit cost of US$1.4 million ($11 million today). [17] The A-X would be the first USAF aircraft designed exclusively for CAS. [18]