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Robert DiGiovanni's user avatar
Robert DiGiovanni's user avatar
Robert DiGiovanni's user avatar
Robert DiGiovanni
  • Member for 5 years, 11 months
  • Last seen this week
38 votes

What's the difference between a "runaway prop" and a "feathered prop"?

36 votes

Why would it not be OK to replace a map light bulb with an LED?

25 votes

Can an aircraft use ram air to generate power while flying?

24 votes
Accepted

Why not extend the downwind when first learning to land?

17 votes

Why does the Pilatus PC-24 have such a large "Airplane Support"?

17 votes
Accepted

Why was the skid landing gear located so far aft on the X-15?

15 votes

Is the cabin pressure "worse" at the back of the cabin than in front?

15 votes

why stabilator has a lower travel limit for down movements?

14 votes

Why do airplanes usually pitch nose-down in a stall?

14 votes

Is it practical to intentionally stall an aircraft to execute a fast, controlled descent?

12 votes

Plane that always flies into the wind?

12 votes
Accepted

Is lowering V1/VR (and runway length required) the only reason for flaps at take off?

12 votes

Do high-wing aircraft represent more difficult engineering challenges than low-wing aircraft?

11 votes
Accepted

Is it okay to hear the stall horn on a small aircraft while flaring?

11 votes

Why is the maximum endurance for a piston aircraft at sea level?

11 votes

At what speed will the crankshaft be rotating if each cylinder of a four-stroke cycle engine is to be fired 200 times a minute?

11 votes

What do "cork screwing" and "pushing air" have to do with propellers?

11 votes

What are the effects of having the aileron hinge line on the pressure side vs the suction side of a wing?

10 votes

To operate on Mars, how large would a manned helicopter's rotor blades have to be?

10 votes

Why do helicopters have skids?

10 votes

Why Didn't the USSR Build An X-15?

9 votes

What is the difference between a forward slip and a side slip?

9 votes

Why were the Space Shuttle's elevons reversed, early in re-entry?

9 votes

Why aren't push propellers common on wing engines?

8 votes

Why is the Cirrus Vision SF50's turbine angle so acute?

8 votes
Accepted

Does Headwind on Landing affect Ground Effect?

8 votes

What U-2 design challenges are still challenging?

8 votes

Was the Space Shuttle aerodynamically neutral while piggybacking, or did the combination act like a giant biplane?

8 votes

What exactly is an "engine surge" in a jet engine, and what causes it?

8 votes
Accepted

Has a small airplane ever been air launched from a heavy-lift helicopter?

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