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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
24 votes
5 answers
11k views

How does gas turbine efficiency compare with supercharged piston engines?

19 votes
7 answers
6k views

How does increasing the size of a jet engine make it more fuel efficient?

17 votes
1 answer
1k views

At what angle to the ground track does wind become favorable to lower fuel consumption?

14 votes
1 answer
3k views

How much oil did Charles Lindbergh have to bring along to fly the Atlantic?

12 votes
4 answers
2k views

Is there a standard definition of the "stall" phenomena?

11 votes
2 answers
753 views

At what Mach number does a fan jet become more efficient than a turboprop?

9 votes
3 answers
2k views

Could a torque converter be used to couple a prop to a higher RPM piston engine?

6 votes
2 answers
3k views

Do helicopter rotors have anti-ice systems like propellers and wings?

5 votes
1 answer
496 views

What was the most efficient cruising altitude of the Lancaster bomber?

4 votes
0 answers
91 views

Does a helicopter actually have a lower rate of fuel consumption in cruise than in hover? [duplicate]

4 votes
3 answers
521 views

Could catalytic combustion improve the efficiency of jet engines?

4 votes
3 answers
933 views

Can prop wash from a live engine contribute a sideways force on the aircraft?

4 votes
1 answer
227 views

Does Molecular Weight of a Gas affect its lifting properties at the same velocity over the same wing?

4 votes
3 answers
1k views

Could higher aspect ratio actually reduce gliding efficiency of a smaller glider?

4 votes
3 answers
2k views

What is the pivot point of pitch change on an aircraft?

4 votes
2 answers
390 views

How do modern turboprops avoid slow spool up of early jets?

4 votes
2 answers
214 views

Would a removable door frame improve the safety of a fuselage door plug design?

4 votes
1 answer
298 views

How do size and speed affect sonic boom strength?

3 votes
4 answers
624 views

What are the correct Cd0 and Cdi values for a NACA 2412 airfoil?

3 votes
1 answer
478 views

Is silk thread still being used to prevent oil loss from Lycoming engines?

3 votes
1 answer
206 views

What sort of clearances would be required to land a sub-orbital glider at a major US airport

3 votes
3 answers
786 views

How is rotor pitch best managed in helicopter autorotation?

3 votes
3 answers
686 views

How does mass affect rate of turn?

3 votes
6 answers
2k views

What produces thrust along the line of flight in a glider?

3 votes
2 answers
197 views

Did large winglets contribute to the spin behavior of the SB 13 tailless glider?

3 votes
1 answer
521 views

Can surface roughing effects on an airfoil Reynolds number be quantified?

3 votes
1 answer
361 views

Is V best endurance configuration the best way to save a heavily overloaded aircraft?

3 votes
0 answers
138 views

What effect did the AWACS radar dome have on the stability of the 707?

2 votes
2 answers
274 views

Why did the DC-3 have a much higher cruise speed than the HP.42, despite their similar weight and power?

2 votes
1 answer
279 views

What would the point to point range of the current Virgin Galactic Spaceship 2 launch system be?