[albed]

Originally Posted by toy boy

Last time i promise.



Primary Function A-10 -- close air support, OA-10 - airborne forward air control
Contractor Fairchild Republic Co.
Power Plant Two General Electric TF34-GE-100 turbofans
Thrust 9,065 pounds each engine
Length 53 feet, 4 inches (16.16 meters)
Height 14 feet, 8 inches (4.42 meters)
Wingspan 57 feet, 6 inches (17.42 meters)
Speed 420 miles per hour (Mach 0.56)
Ceiling 45,000 feet (13,636 meters)
Maximum Takeoff Weight 51,000 pounds (22,950 kilograms)
Range 800 miles (695 nautical miles)


757

Passengers
Typical 2-class configuration
Typical 1-class configuration

243
280
Cargo 2,370 cu ft (67.1 cu m)
Engines
maximum thrust

Rolls-Royce RB211-535E4B
43,500 lb (193.5 kN)

Pratt & Whitney PW2037
36,600 lb (162.8 kN)

Pratt & Whitney PW2040
40,100 (178.4kN)

Pratt & Whitney PW2043
42,600 lb (189.4 kN)
Maximum Fuel Capacity 11,466 gal (43,400 l)
Maximum Takeoff Weight 272,500 lb (123,600 kg)
Maximum Range 3,395 nautical miles (6,287 km)
Cruise Speed Mach 0.80



1) note the difference in thrust rate

Five times zero is still zero. A plane that's diving actually has it's exhaust pointed upward. Have any figures for that fanning cone? Summary: it's perfectly reasonable to have no jet wash hitting the ground.

Originally Posted by toy boy

2) you failed your last physical didn't you? if you don't hear an A10 coming you must have some sort of a hearing problem. Planes don't come more sub sonic than the A-10

My hearing's fine, that's just the way it is for whatever reason. I was on deck in the Mediterranean once and three A-4 Skyhawks (I think) in tight formation screamed overhead at about 50 feet and I nearly jumped overboard. Damn Italians! Never heard them coming either.

Common sense tells me the exhaust noise is heading rearward and fanning out, and with nothing to reflect it forward it won't be heard from the front.

Anyone else have experience in this sort of thing?