Search found 40 matches

by yyt
Sat Jan 21, 2023 10:56 am
Forum: Hybrid Cannons
Topic: The needle valve actually failed at 150×
Replies: 2
Views: 106

Re: The needle valve actually failed at 150×

这是它的照片。在几次150次射击后,它变得无法保持密封。
by yyt
Sat Jan 21, 2023 10:46 am
Forum: Hybrid Cannons
Topic: The needle valve actually failed at 150×
Replies: 2
Views: 106

The needle valve actually failed at 150×

I can't understand that the initial pressure of 150× and the theoretical explosion limit pressure should be less than 110mpa, but the maximum working pressure of my needle valve reaches 400mpa. Why did it fail?
by yyt
Thu Jan 12, 2023 6:49 pm
Forum: Hybrid Cannons
Topic: Help for spark plug leakage problem
Replies: 6
Views: 319

Re: Help for spark plug leakage problem

Do you think a self-made epoxy spark plug can work better? I would make something like that: Untitled.jpg Using this sort of fitting: Untitled.jpg Yellow is a plastic cup or similar insulator, glue to the fitting, stick your electrode through then pour marine epoxy. Thank you for your advice. It lo...
by yyt
Wed Jan 11, 2023 10:01 pm
Forum: Hybrid Cannons
Topic: Help for spark plug leakage problem
Replies: 6
Views: 319

Re: Help for spark plug leakage problem

Does anyone know how the ignition device of larda keeps the insulation and seal between the electrode and the casing? His transmitter works many times at 200×, and I need to get more advice. Thank you all!
by yyt
Wed Jan 11, 2023 9:51 pm
Forum: Hybrid Cannons
Topic: Help for spark plug leakage problem
Replies: 6
Views: 319

Re: Help for spark plug leakage problem

Do you think a self-made epoxy spark plug can work better?
by yyt
Wed Jan 11, 2023 9:48 pm
Forum: Hybrid Cannons
Topic: Help for spark plug leakage problem
Replies: 6
Views: 319

Re: Help for spark plug leakage problem

jackssmirkingrevenge wrote:
Wed Jan 11, 2023 2:14 am
Do you mean the gas leaks between the electrode and the insulator?
yes
by yyt
Tue Jan 10, 2023 6:37 am
Forum: Hybrid Cannons
Topic: Help for spark plug leakage problem
Replies: 6
Views: 319

Help for spark plug leakage problem

I have ignited up to 150× through the spark plug, but under this pressure, the spark plug can't seem to keep its seal and start to leak. Is there any solution? Do you think it is a feasible scheme to make a self-made high-strength spark plug?
by yyt
Sun Dec 11, 2022 6:31 am
Forum: Hybrid Cannons
Topic: How accurate is your hybrid gun?
Replies: 1
Views: 310

How accurate is your hybrid gun?

Can a stable chamber pressure be achieved by filling a fixed amount of fuel with a syringe? How much does your initial speed fluctuate? Because of my national policy, I can't get a barrel with rifling. Can a musket achieve long-range precision strike? :D
by yyt
Sun Dec 11, 2022 6:18 am
Forum: Hybrid Cannons
Topic: How do you install bursting discs?
Replies: 2
Views: 408

How do you install bursting discs?

At present, I use a cam lock with self-locking function. Although its rated pressure is 5mpa, I still mix it up to 70 times. It seems to work well, but I'm still afraid it will fail. Do you have any better suggestions?
by yyt
Wed Nov 23, 2022 5:33 am
Forum: Hybrid Cannons
Topic: Unable to run hgdt.
Replies: 2
Views: 416

Re: Unable to run hgdt.

jackssmirkingrevenge wrote:
Tue Nov 22, 2022 8:34 pm
Have you tried "run as administrator"?
I downloaded a new component and it is now running successfully
by yyt
Wed Nov 23, 2022 5:30 am
Forum: Hybrid Cannons
Topic: Questions about pressure and flow rate
Replies: 5
Views: 543

Re: Questions about pressure and flow rate

theoretically, A and B should use the same amount of fuel, so their calorific values should be the same. They use the same amount of fuel, but B generates higher pressure and will therefore outperform A by a considerable margin, because projectile acceleration will be greater. Edit: here is a compa...
by yyt
Wed Nov 23, 2022 5:26 am
Forum: Hybrid Cannons
Topic: Questions about pressure and flow rate
Replies: 5
Views: 543

Re: Questions about pressure and flow rate

Assuming that there are two combustion chambers A and B, the volume of A is twice that of B, and the initial pressure of B is twice that of A, then theoretically, A and B should use the same amount of fuel, so their calorific values should be the same. Then the question comes, which one, A and B, c...
by yyt
Tue Nov 22, 2022 6:39 am
Forum: Hybrid Cannons
Topic: Unable to run hgdt.
Replies: 2
Views: 416

Unable to run hgdt.

This is an error warning. I can't understand it. Can anyone help me?
by yyt
Tue Nov 22, 2022 4:41 am
Forum: Hybrid Cannons
Topic: Questions about pressure and flow rate
Replies: 5
Views: 543

Re: Questions about pressure and flow rate

To put it another way: If your cannon does not inject additional fuel and air, but only compresses the mixture at normal atmospheric pressure, will its performance change?
by yyt
Tue Nov 22, 2022 4:36 am
Forum: Hybrid Cannons
Topic: Questions about pressure and flow rate
Replies: 5
Views: 543

Questions about pressure and flow rate

Assuming that there are two combustion chambers A and B, the volume of A is twice that of B, and the initial pressure of B is twice that of A, then theoretically, A and B should use the same amount of fuel, so their calorific values should be the same. Then the question comes, which one, A and B, ca...