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Dullard's latest activity
D
Dullard
replied to the thread
Wing Sails on modern ships
.
In case you were wondering: A Panamax bulk carrier (without sails) typically burns fuel at a rate of 90 Tons/day.
Wednesday, 12:17 PM
D
Dullard
replied to the thread
Wing Sails on modern ships
.
"In fact, you can do this continually as conditions change" Reference...
Wednesday, 6:39 AM
D
Dullard
replied to the thread
Adjusting the pressure of helium flow to account for smaller tube
.
The Helium flow through a 1.5m length of 9mm I.D. tubing with the described pressure conditions will be significantly (several orders)...
May 3, 2024
D
Dullard
replied to the thread
The Cass Report (UK)
.
To be fair, an individual's perception of the report probably boils down to a single question: Is evidence required to justify...
May 1, 2024
D
Dullard
replied to the thread
B
Conceptually understanding change in potential energy with 0 net work
.
Draw a dotted line (wherever you like) around the system. Don't move the line halfway through the analysis.
Apr 26, 2024
D
Dullard
replied to the thread
The Cass Report (UK)
.
One could (were one bored enough) argue for a long time about an objective evaluation of subjective data. The Cass review appears to...
Apr 24, 2024
D
Dullard
replied to the thread
HVAC
Diagnosing a thermostat issue
.
My Grandfather use to say "If it works, don't F@!%$ with it." This is one of those situations. Grandpa never worked on spacecraft.
Apr 10, 2024
D
Dullard
reacted to
Guineafowl's post
in the thread
HVAC Electrical Issue: Current Leakage from Furnace
with
Like
.
Are you measuring all three conductors (L,N,E) inside the clamp? A more usual method would be to clamp L+N, thereby measuring all...
Apr 4, 2024
D
Dullard
replied to the thread
HVAC
Diagnosing a thermostat issue
.
Good Luck. It will make perfect sense (once you figure it out).
Apr 3, 2024
D
Dullard
replied to the thread
HVAC
Diagnosing a thermostat issue
.
The 2 leading possibilities: 1. A cable defect (marginal) between the Tstat and the AC 2. An intermittent defect at the main contactor...
Apr 3, 2024
D
Dullard
reacted to
jrmichler's post
in the thread
Is it possible to use radial seals on non-circular cross sections?
with
Like
.
It should be possible to do the concept in Post #3. You would need tight tolerances and a close fit between the two parts in order to...
Apr 3, 2024
D
Dullard
reacted to
Baluncore's post
in the thread
Is it possible to use radial seals on non-circular cross sections?
with
Like
.
The problem I see with a radial seal, is extrusion of the o-rings. With a face seal, the gap between the two parts is closed by...
Apr 3, 2024
D
Dullard
replied to the thread
Is it possible to use radial seals on non-circular cross sections?
.
I can think of no reason (theoretically) that you couldn't use O-rings in a static application with the 'gentled' rectangle that you...
Apr 2, 2024
D
Dullard
reacted to
Baluncore's post
in the thread
Calculate current through tank circuit on induction heater
with
Like
.
Attach two thin wires to the conductor as the test leads. Run one wire along the conductor doing a single turn, then twist the two wires...
Apr 1, 2024
D
Dullard
reacted to
Baluncore's post
in the thread
I
Why Does Differential Pressure Vary As The Square Of The Flow?
with
Like
.
Bernoulli's principle is simply conservation of energy, of a small mass of fluid. Kinetic energy is proportional to velocity squared...
Mar 28, 2024
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