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105 votes
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Why was the P-51 Mustang not adopted by the U.S. Navy?

The biggest driver behind the use of the P-51 Mustang in naval operations was the need for B-29 escorts while bombing Japan. No naval fighter at the time had the range to accompany the B-29's so the P-...
Ron Beyer's user avatar
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57 votes
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Why does camouflage make some planes fly slower?

Same reason gliders keep their wings waxed. It wasn't the camo per se, it was the dull matte field-applied paint finish that included all sorts of imperfections, and to a small degree, the weight of ...
John K's user avatar
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51 votes
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What is this "No Hand Hold" thing in the P-51 Mustang cockpit?

It is part of the gyroscopic gun sight: Source: WarRelics Forum It is not a "hand hold" because you don't want to damage the sight by grabbing the scope to situate yourself in the cockpit (getting ...
Ron Beyer's user avatar
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42 votes
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Why do propeller driven planes have intakes/inlets, such as this one on the P-51 Mustang?

Propellers are driven by engines, and engines burn fuel, and burning requires oxygen from the air. The intake supplies air to the engine. Burning creates heat, and air intakes also direct cooler air ...
GdD's user avatar
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36 votes

Why do propeller driven planes have intakes/inlets, such as this one on the P-51 Mustang?

The design of the P-51 means the engine radiator (a component of the cooling system) is situated behind and below the pilot, as in this diagram (from here):
Greg Hewgill's user avatar
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19 votes

Why does camouflage make some planes fly slower?

It's primarily all about matte vs glossy finish. Normally a camo paint scheme would not be finished in a glossy finish as this might flash in the sunlight. A matte finish is rougher and thus has ...
quiet flyer's user avatar
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19 votes
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What did the "gear warning horn" on the North American P-51 sound like?

Interesting question. Unfortunately, I couldn't locate the part in the P-51D/K parts catalog, but, if an E-bay seller is to be believed, it had an E-2 Faraday horn, which appears to be an ...
Marius's user avatar
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18 votes
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Does it really take 9000 feet to recover from a spin in a P-51 Mustang?

9000 feet is not likely if the pilot applied recovery techniques in a timely manner. US Army Air Force spin tests found here resulted in an average of 3000-6000 ft alt loss. There are several memos ...
TomMcW's user avatar
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14 votes

Did the Germans ever use captured Allied aircraft against the Allies?

Not sure about the Germans, but the Italians used a P-38 (from the site 12 O'Clock High): The piece about the P-38 captured by the Regia Aeronautica is extremely correct (at last, I was sick of ...
Eugene Styer's user avatar
  • 3,519
14 votes

Why do propeller driven planes have intakes/inlets, such as this one on the P-51 Mustang?

don't propeller-driven planes not require any sort of intake No, propeller-driven planes (piston or turboprop) require air intakes for a variety of purposes: Combustion air Engine cooling (whether ...
Fred Larson's user avatar
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11 votes
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Can a P51 outrun an missile?

The P-51 Mustang is not designed to go supersonic, in fact no propeller airplane is designed to do that... Can propeller driven aircraft sustain speeds at or above Mach 1? For example, the Republic ...
Ron Beyer's user avatar
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10 votes

Does it really take 9000 feet to recover from a spin in a P-51 Mustang?

Sometimes a minimum density is needed to increase aerodynamic damping enough so ending the spin becomes possible. However, then there is not a fixed altitude loss to stop a spin but a fixed density ...
Peter Kämpf's user avatar
8 votes
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Why this P-51 limitations placard for diving?

That's correct. The limitations are to stay below the critical Mach Number, and altitude is used because it's easier for the pilot to monitor and reference to than temperature. The numbers are based ...
John K's user avatar
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8 votes
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What is the difference between a P-51 Mustang and an A-36 Apache?

They were largely the same aircraft but the first line of the A-36 wiki sums it up nicely the ground-attack/dive bomber version of the North American P-51 Mustang, from which it could be ...
Dave's user avatar
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8 votes

Why does the P-51 Mustang take so much altitude to recover from a spin?

Others can probably give you more precise info since I'm not a P-51 pilot, but I am studying aircraft dynamics in school right now, so maybe this will help. Many fighter aircraft are designed such ...
ryanrr's user avatar
  • 354
7 votes

Why was the P-51 Mustang not adopted by the U.S. Navy?

The P-51D's power-loading was more or less identical to that of the F6F-5; about 7.70 lb / hp at MTOW; the F6F was considerably heavier but had 30% more engine power with the R2800-1OW capable over 2,...
Andrew Stephenson's user avatar
6 votes

Did the Germans ever use captured Allied aircraft against the Allies?

Yes they did. Kampfgeschwader 200 flew recon and supply missions in captured bombers. Here's a good few more captured examples: German Warplanes 1939-1945, Captured Allied Aircraft in Luftwaffe ...
Guy Inchbald's user avatar
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6 votes

What is this "No Hand Hold" thing in the P-51 Mustang cockpit?

It's Mk14 lead computing gyro gunsight. Designed by the Brits, and credited with increased accuracy / higher kill ratio (it took a lot of the guessing out of shooting). The padded part with "No ...
BiffF15's user avatar
  • 61
5 votes

Can a P51 outrun an missile?

In counterpoint to @Ron Bayer's answer: During the V-1 attacks in 1944 and 1945, modified P-51s (among other aircraft) were used to intercept and destroy the "cruise missiles" before they reached ...
DJohnM's user avatar
  • 436
4 votes

Why was the P-51 Mustang not adopted by the U.S. Navy?

The US Navy didn't need the P51 because they had the F4U Corsair, which had comparable performance, was better suited to ground attack work, and was designed from the start with a tougher structure ...
J. Southworth's user avatar
4 votes

Why was the P-51 Mustang not adopted by the U.S. Navy?

The Navy did not want the complexity of the liquid cooled engine and the need to supply and store coolant. AND the coolant is FLAMMABLE another problem the Navy did not want. The liquid cooled engines ...
Daniel W. Phariss's user avatar
4 votes
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Why is the horizontal stabilizer forward of the vertical stabilizer on the P-51?

The primary factor affecting the longitudinal placement of the vertical stabilizer is yaw authority in a spin. From Corke, here is a relevant diagram and description: As illustrated in Figure 6.10 ...
Peter Schilling's user avatar
3 votes

What is the difference between a P-51 Mustang and an A-36 Apache?

Please ... the A-36A has to have more wrong "information" on it both in print (as in books and magazines) and online in articles, photos and videos, than ANY other WWII aircraft. First it is NOT a "...
Tom Griffith's user avatar
3 votes

Why was the P-51 Mustang not adopted by the U.S. Navy?

Not mentioned above is a key design criterion that changes everything: A carrier can sail to the area of action. An airbase cannot. Longer range is always a good ...
Maury Markowitz's user avatar
2 votes

Why does the P-51 Mustang take so much altitude to recover from a spin?

3 1/2 turns seems pretty good, but factors to consider are: The P51 Mustang has a similar wing area compared to a Cessna 172, but weighs 6x more. The Mustang was designed for as low a drag as ...
Robert DiGiovanni's user avatar
2 votes
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Was the P-82 twin Mustang better than the P-51D?

The two planes serve very different roles. The 82 was a long distance aircraft first and foremost, and everything else was secondary to that goal. The 51 was a fighter, and its excellent range was not ...
Maury Markowitz's user avatar
2 votes

Why do propeller driven planes have intakes/inlets, such as this one on the P-51 Mustang?

The p51 has an inline engine which makes cooling with just air flow infeasible since the pistons are not all exposed to air flow equally. If you look at pictures of other WW2 era planes like the F4U ...
Scott Flicker's user avatar
2 votes

Why do propeller driven planes have intakes/inlets, such as this one on the P-51 Mustang?

That’s the intake duct for the radiator for the liquid cooled engine. Similar to the radiator in your car, the radiator for the engine in the airplane is cooled by ram air from the intake passing ...
Romeo_4808N's user avatar
  • 73.7k
1 vote

What is the difference between a P-51 Mustang and an A-36 Apache?

The A-36 was a P-51A configured for ground attack with minor add-ons like the dive brakes and bomb racks (and 20mm cannon on some). Both had the Allison engine which was not suitable for high ...
John K's user avatar
  • 131k

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