# Tag Info

### Why do new jet engines cost billions to design?

Even if we ignore the salaries of everyone involved; engineers, sales people, management, Q/A teams, manufacturing teams, more sales people, and then a few spare engineers... I don't understand. If ...
• 101k

### How much of an improvement would a 1% weight decrease on an airplane be to the industry?

There is an easy way to get an idea of what magnitude the savings are: The Breguet equation can answer this. You first calculate a reference aircraft and then start all over with one that weighs 1% ...
• 234k

### Why do flight schools refuse to tell me the price of a course?

Mostly because what takes one individual 50 hours, will take another 75, and someone else 100. For that reason, most if not all flight schools will only tell you 2 things The minimum number of hours ...
• 33.7k

### Why do new jet engines cost billions to design?

Jet engines are some of the most complex machines ever created. They have to be as light, efficient, safe, and reliable as possible. There's a reason that most new airliners recently have been ...
• 73.4k
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### How much does a typical private pilot pay for a non-training flight?

It depends on your location. It will vary based on cost for tie-down or hangar space, fuel costs, maintenance costs, etc. In order to compare apples to apples, let’s boil it down to a wet-Hobbs-rate. ...
• 16.5k

### How much of an improvement would a 1% weight decrease on an airplane be to the industry?

One % of takeoff weight is huge. On a B747 with MTOW of 300 tons, that is a weight saving of 3,000 kg, weight that needs not be lugged around for the couple of decades that the aircraft will be flying....
• 61.8k
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### How much does a Hundred Dollar Hamburger actually cost?

The flight school I fly out of rents a 152 at 86USD an hour wet. Assuming you need some cash for the burger lets say you save the remaining 14 dollars for that you are right at your 100. With the 152 ...
• 101k

### Why do new jet engines cost billions to design?

Last I checked, most scientists and engineers do not make millionaire salaries. I think it's more around 100 to 250k tops. Even if you had 100 of them working for 10 years on it, that would be 250M, ...
• 27.6k

### What keeps certified GA aircraft from being affordable?

Product liability destroyed this industry. In the 1970s GA aircraft were much less expensive. A midrange model cost about twice the annual salary of the average US worker. Annual production was about ...
• 20.7k

### Why do new jet engines cost billions to design?

The answers are all very good in that they detail potential costs, but let me give a different angle for looking at these types of questions. In a highly competitive environment, companies will throw ...
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I read an article on the SF-50 recently published in AOPA Pilot and, to be honest the Cirrus Jet is not even in the same league as the other aircraft mentioned. People think 'oh it's a jet for $2 mil ... • 74.1k 11 votes ### 4 Boeing 707 for$50,000. Is that possible?

Its surely possibly and there are a few things I can think of off hand, Missing Log Books: generally speaking if an aircraft is missing its log books you need to do quite a bit of tear down and ...
• 101k
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### Does aircraft manufacturers provide option to exchange older models?

Manufacturers will do whatever it takes to score an order, so it's not uncommon for an OEM to take old aircraft on trade with a new order, especially if they are from the same maker. The OEM I worked ...
• 132k
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• 8,584
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### What are the costs versus benefits of takeoff/landing on grass versus pavement in a light aircraft?

Pretty simple. Even a nicely rolled grass runway is nowhere as smooth as asphalt. Tires on grass seem to last forever, but it wears out everything else in the gear out faster. Oleos get worked ...
• 132k

### How much does it cost extra to fly with one additional passenger?

I am basing the following calculations on the excellent answer by Peter Kämpf to this question: How much of an improvement would a 1% weight decrease on an airplane be to the industry?. We can ...
• 56.5k

### Is solar power used (as auxiliary power) on commercial aircraft?

The sun's energy is a max of about 1000 W/m2 at sea level (sun directly overhead, clear day). A solar power installation may have around 15% efficiency, yielding a max of 150 W/m2. Let's just see ...
• 73.4k
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• 101k
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### How do rental prices that include fuel work if you refuel?

Every FBO that rents aircraft wet should have a published policy on this, possibly even in the rental agreement you signed. In every case I’ve seen or heard of, you just submit the receipt for any ...
• 27.7k
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### Is it feasible to repair a C152 that flipped onto its back?

Yes it can be fixed by replacing the stabilizers and wings which just bolt on. Replacements are readily available in the used parts market for 152s. Generally with metal that's been subject to a ...
• 132k

### How much does a Hundred Dollar Hamburger actually cost?

It depends on location. The prevailing rental rates at a busy airport near me are around \$200/hr wet Hobbs for a C172. Only \$100 gives you about enough time to start up the plane, taxi out, wait in ...
• 27.7k
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### Which kind of aircraft have the lowest operating cost?

150 Miles is perfectly reasonable distance in most small planes and one passenger is a fairly easy load. There are a lot of options out there but arguable the cheapest would either be the Cessna 150/...
• 101k
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### How much do '1,500 total hours with 500 multi crew hours' cost in Europe?

You get to the 1500 hours by working in a flying job once you have your comm/group 1 IFR, which is where the 62k gets you. Even if you wanted to spend a decade renting airplanes to get the time in, ...
• 132k
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### Can I have a free ride with airplane?

Can you have a free ride in an airplane? Yes, probably! Pilots give free rides in airplanes all the time. They're generally called discovery flights, and (at least in the USA) you can find someone who ...
• 23.3k