xxavier
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An 'aerodynamic force' (just one force...) appears when a body is immersed in a fluid stream. By convention, two components are chosen, one of them parallel to the stream direction, called 'drag', and ...

Lift is (among other things) a function of the airspeed and the angle of attack of the wing. Hence, if you reduce your speed, you have to compensate the associated lift loss by increasing the angle of ...

The Short Scion Senior flying boat was powered by four 88 hp radial engines and its weight, empty, was 3,650 lb (1,637 kg).

The wings and a few parts of the body of the Heinkel He 162 jet fighter were made of plywood. https://de.wikipedia.org/wiki/Heinkel_He_162#Konstruktion_und_Ausr.C3.BCstung The Bachem Ba 349 'Natter', ...

In an aircraft that is climbing at a constant vertical velocity, the total of the upward-directed vertical forces is the same as the total of the downward-directed vertical forces. Were it not so, ...

The inboard engines were of a different type, and more powerful than the outboard engines. Hence, the props had to absorb different power, so they were four-bladed for the inboard and two-bladed for ...

A commercial airship, like the 'Zeppelin NT' can stay airborne for 24 hours. The record (for a military US-Navy blimp in the 1950s) is 264 hours, 12 min. It covered more than 13,000 km. Record ...

High-powered single prop planes may react violently if the throttle is opened abruptly. Torque reaction and P-factor should be smoothly dealt with...

That drone has fixed-pitch rotors, and that pitch is optimized for thrust, not for autorotation. In the absence of power, those rotors won't autorotate. They will stop rotating 'in the right way' and ...

It's probably a Stinson Junior. Built in the late 1920s and early 1930s.

The lift equation is $$L = \frac{1}{2} C_L · v^2 · S · \rho$$ where $S$ is wing area, $C_L$ coefficient of lift, $\rho$ air density, and $v$ airspeed. Using units of measure $\text{m}^2$ for $S$, \$\...

It's a LET L-200 Morava, a Czech plane... http://www.aviastar.org/air/czech/let_l-200.php

One of the first helicopters that really flew (c. 1918) was the 'Petróczy-Kármán-Žurovec', intended to be used by the Austro-Hungarian Army as a tethered observation platform. The observer stood above ...

It can be done, but the better specific fuel consumption does not compensate for the extra weight. We all know that aero engines have to be as light as possible. In land, stationary installations, ...

There are several regions where you could (at least in theory) fly below sea level. For example, in the Dead Sea depression, that is the lowest stretch of land on the planet, reaching a maximum depth ...

It's possible to arrive at a rough estimate by assuming that the L/D ratio is 9. Now, the empty mass is 70 kg. Let's add 45 kg for the engine, transmission and propeller. And we must not forget the ...

It's done sometimes, for ultralight aircraft and paramotors. Like this:

The force that pushes a glider is a component of its weight. More precisely, it's the projection of the vector weight W on the glide path. It's exactly of the same value of drag D, if the glider is ...

At least two all-metal airships are known to have existed, the first one invented by David Schwarz, and test-flown in Tempelhof, in 1897. It flew, but crashed when landing. Another one, a really ...

The stall speed of the F4U Corsair may be 89mph, and a safe approach speed might be 95-100mph, but that's airspeed... Measured with reference to the carrier deck, you have to substract 20mph headwind (...

It's a Carden-Baynes Bee... A British plane built in the 30s... https://en.wikipedia.org/wiki/Carden-Baynes_Bee

Googling the registration EI-ILS: Eurocopter EC135 T2 Irish Helicopters Ltd MAX. PASSENGERS 6 YEAR OF PRODUCTION 2008 HOMEBASE EIDW (DUB), Dublin Intl

Helicopter rotors are very large precisely for that reason. Lift from a rotor (or thrust from a propeller or fan) is obtained by accelerating a given mass of air m to a velocity v. The thrust obtained ...

I think it's a transparent cover for a direction-finding loop antenna. The rear gunner doubled as navigator, and probably needed to check the position of the moveable loop antenna. Ref.: Luftfahrt ...

That power is sink rate x glider weight. If you use m/s for sink rate and newton for weight, you'll get the power in watt. Advantages of SI... It's easy to understand why it is so. Within a uniform ...

The Japanese navy did that in WW2. https://en.wikipedia.org/wiki/I-400-class_submarine

According to Wikipedia https://en.wikipedia.org/wiki/Aircraft_catapult an American carrier type Kitty Hawk has a catapult capable of accelerating a mass of 35000 kg to 139 knots (71,51 m/s), and the ...