Pursuit
"Pursuit" was an old term that dated back to just after World War 1. The letter prefix was used by the Army to designate the role of the airplane. Thus:
B = Bomber
P = Pursuit
A = Attack
C = Cargo
T = Trainer
O = Observation
L = Liason
then later they finally used
F = Fighter
The numbers were assigned to a new aircraft design as they were introduced. Thus the P-40 was an early a/c that was operational at Pearl Harbor attack. Then came the P-47 and the P-51. The "missing" numbers were aircraft that were experimental a/c that never went into production.
The Navy had their own aircraft code designations. Later, the US Air Force(created in 1947) created some new designations and used 2 letters. Army adapted 2-letter codes for their variety of helicopters(H).
The P51 Mustang is 32 ft long.
North American Aircraft made the P-51 Mustang.
The "P" in P-51 mustang stands for pursuit which is the equivalent to a modern "F" designation.
The P51 mustang has Six .50 caliber machine guns and a external bomb load of 2,000 lbs
Hydralic filtration: P51 Mustang
A normal P-51 did not have the range for that, but possibly with extra drop tanks. At least one 'civilianised ' P-51 has flown the Atlantic.
As long as there is enough gas in the tank to make the length of the trip, a P51 Mustang that is in good repair should be able to travel 45 miles in a single trip.
The English letter 'p' does not exist in Japanese, though there are syllables that incorporate the sound. It does not stand for anything in Japanese.
The P-51 has not had its "last" flight. Many P-51's (now F-51) are still flying today.
Park
Over 15,000 P-51's were built and about 250 survive today, many of them flyable.
The max speed of a p-51 mustang is 437 mph.