Grappler Truth Teller Feller wrote on Feb 16
th, 2014 at 10:22pm:
The argument seems to be speed at a certain height. Opaerating speed is higher at 35000 feet than it is at sea level or near.
"if a boat is traveling at 10 knots, it is going 11.5 mph, or 15% more in that unit"
Ergo - if a Boeing is traveling at 360 kots (some say max speed at sea level is 360 MPH) that's 414 mph.
Maybe the radar information was wrong or distorted.... I would have thought, with some experience as pilot - that a flaps down and slow approach would enable a greater chance of a hit and would achieve possibly more damage... certainly no less damage.
Mind you if Ayrab Joe was hitting the firewall and not thinking too good.. he might try for a full tilt hit.. dropping the flaps at high speed will give you one hell of a jolt on the wings and a serious ballooning effect......
Ya gotta take it slow and steady.. not as if you're wall-to-wall in AAA and SAMs..flak you could walk home on if they knock your wings off....
Amazing that it hit at all!
ADDS:- Oh.. HERE!
http://www.flywestwind.com/hangar/aircraft_files/foms/B763ERFOM.pdf You have what is called
true airspeed and
IAS which is indicated air speed.
They use a pitot tube to measure airspeed (and altitude,rate of climb) so with the air being thinner at altitude your airspeed readings are slower despite the fact you are travelling faster.
True airspeed and indicated airspeed will be the same at sea level, at altitude the indicated speed will be lower than true speed, of course headwinds and tailwinds affect true air speed.
Velocity never exceed is the same regardless of alititude.
Planes are sluggish and unresponsive at slower speeds, they respond better with faster airflow over wings and rudder at higher speeds.
Flaps are only used to help low speed flying where the wing is not as efficient.
360 knots =662 kph which is slower than 470 knot (865kph) cruise speed of a 767.
The Pentagon plane was in ground effect before it hit, the close proximity to the ground increases aero lift when in ground effect and many a pilot has overshot the runway on landing due to too fast and hovering in ground effect.
Aeroplanes are usually made with a factor of safety of 2,if a plane is rated for 4 g it will break if you push it to 8g.
If you look at the equation for kinetic energy velocity is squared so increasing speed gives a bigger impact.
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