GasEQ says a 5X benzene hybrid will produce max chamber pressure about 897psi, whereas a propane 5X hybrid will only produce about 553psi. Unfortunately this is about the limit from the vapor pressure of benzene, but the pressure difference is so great, has anyone considered trying this?
-Chamber fueling suggested
Benzene hybrid?
Why go to all that trouble for 900psi when one can use a higher mix with propylene or similar gaseous hydrocarbons? A much more sensible modification is to use helium as a buffer gas, which considerably boosts the achievable pressure (based on a fixed starting pressure and fuel quantity) for any fuel, and vastly improves the sound speed in the propellant gases. Also, benzene is rather toxic, and not quite so easy to purchase as propane or propylene.
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
Well I guess that idea was simply a random ejaculatory product of cramming for a chemistry final... Back to serious work 
-
SpudBlaster15
- First Sergeant 3
- Posts: 2400
- Joined: Wed Oct 18, 2006 11:12 pm
- Has thanked: 2 times
- Been thanked: 10 times
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.
Last edited by SpudBlaster15 on Thu Jul 15, 2021 12:20 am, edited 1 time in total.
I used the detonation option... does that give much higher pressure values?
-
jimmy101
- Sergeant Major 2
- Posts: 3206
- Joined: Wed Mar 28, 2007 9:48 am
- Location: Greenwood, Indiana
- Has thanked: 6 times
- Been thanked: 18 times
- Contact:
Not really. It is carcinogenic with chronic exposure. For acute toxicity you would either have to repeatedly spill large quantities on yourself, swallow a fair amount (several cc's) or be exposed to high (>0.5% v/v or so) vapor levels for a while.DYI wrote:Also, benzene is rather toxic, ...
If you need to work with benzene for extended periods the usually solution is to use toluene instead of benzene. Toluene has the same basic chemical properties but is much less toxic.
-
SpudBlaster15
- First Sergeant 3
- Posts: 2400
- Joined: Wed Oct 18, 2006 11:12 pm
- Has thanked: 2 times
- Been thanked: 10 times
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.