A reasonably massive bolt and a stiff recoil spring keep the breech closed until chamber pressure
has dropped to safe levels and/or the bullet has exited the barrel.
when both were loaded to the same chamber pressure
. That changed somewhat after Bruce Hodgdon introduced military-surplus H4831 in 1950.
Since there is a bit of residual chamber pressure
when the bolt unlocks, binding force stresses the lugs and can lead to breakage.
We're talking nanoseconds but potentially enough to allow chamber pressure
The damping of the orifice is equal to the gradient of the function relating chamber pressure
to the air flow rate through the orifice multiplied by the cross-sectional area of the water column.
Motivated by the increase in onboard sensing, electronics and computation capabilities, this study proposes an artificial neural network-based approach to predict pushrod stroke based on measurement of brake chamber pressure
We sometimes read about cast bullets obturating, or swelling, due to chamber pressure
, filling the bore and sealing it.
With this design, the extent of charge back fed from the main chamber is reduced if not entirely prevented as the pre-chamber pressure is higher than the main chamber pressure
at least prior to ignition in the main chamber.
As for the [C.sub.f], it was calculated using the instantaneous force and chamber pressure
. The averaged [I.sub.sp] obtained by the hot-fire test in this work was 221, about 93.6% of the theoretical value.
Secondly, the axial load piston was brought into contact with the specimen cap, and the specimen was filled with deaired water; a chamber pressure
of 35kPa or less was applied, and the specimen drainage valves were opened.
[DELTA]V is the volume globally injected during the injection event and [DELTA]P is the corresponding chamber pressure
Users obtain a starting point for primary drying duration and the maximum product temperature at the sublimation interface using pertinent information, such as shelf temperature and chamber pressure
, from which an optimized freeze drying cycle can be developed.