I think BOAC brought them here. Think I saw one at Tullamarine, which opened about 1970. I think Essendon's runways would have been too short..
Most pitch angles are limited to 18 degrees for Passenger comfort on RPT. on climb out.
Four engined planes are not as overpowered as 2 engined planes are. They have 3 left when ONE fails. The comparisons would have to be made at max TOW to be valid. . A jet well under MAX TOW will climb better. A lot of take offs are done with reduced thrust when all the power is not required. Nev