HP requirements for super sonic
HP requirements for super sonic
(OP)
Yes not thrust. Approximate HP required for old planes like the F104 star fighter and F16 to maintain super sonic speeds?
And curious about the difference of drag coefficients between the two.
And curious about the difference of drag coefficients between the two.





RE: HP requirements for super sonic
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RE: HP requirements for super sonic
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Greg Locock
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RE: HP requirements for super sonic
Consider that the F-22 can fly at mach 1+ (supercruise) without using afterburners, which makes a huge difference in fuel consumption.
RE: HP requirements for super sonic
Speed Fuel consumption lb/nm
Cruise 18
M1.2 44
M1.6 45
M2.0 52
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Greg Locock
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RE: HP requirements for super sonic
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: HP requirements for super sonic
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: HP requirements for super sonic
Of course rang is so short that use of the term 'cruise' is debatable
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: HP requirements for super sonic
It's a neat rule of thumb, immediately contradicted by the Hustler's example.
Cheers
Greg Locock
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RE: HP requirements for super sonic
RE: HP requirements for super sonic
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: HP requirements for super sonic
The Concorde used re heat to get up to Mach 2 then used just the turbojets to maintain that speed.
B.E.
You are judged not by what you know, but by what you can do.
RE: HP requirements for super sonic
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: HP requirements for super sonic
It was an extremely powerful engine, before I came to the states I was at Bristol, the day an Avro Vulcan used as a flying test bed with one of those engines mounted centerline under the fuselage, got too far down the runway on an approach into Filton airport, and firewalled everything he had including the Olympus .
There was a petrol station ( Gas Station ) on a road at the end of the approach to the runway. The whole thing was blown flat, pumps, buildings, everything The official line was that the aircraft was being delivered, he had the engine fitted and running.
Here is an except from an official report : On 16 September 1960, Vulcan B.2 XH557 wrecked the appropriately named "Runway Garage" at Filton. XH557 had been allocated to Bristol Siddeley Engines to test the Olympus 301 engine and was being delivered to Filton. Approaching in poor weather conditions, the aircraft touched down halfway along the runway. The braking parachute was streamed but realising the aircraft would not stop in time, the captain opened the throttles to go round. A street light on the A38 was struck as the aircraft climbed away, leaving a scene of chaos behind it. The Runway Garage took the full force of the jet blast: four petrol pumps were blown flat; a street light lay across the road; railings were blown over; and cars had their windscreens shattered. The aircraft diverted to St. Mawgan and was flown back to Filton some days later.[210]
B.E.
You are judged not by what you know, but by what you can do.
RE: HP requirements for super sonic
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: HP requirements for super sonic
From an "impeachable" source: "During the Supersonic cruise only 8% of the power is derived by the engine with the other 29% being from Nozzles and an impressive 63% from the intakes."
RE: HP requirements for super sonic
As I recall the SR-71 engine intake & nozzles worked similarly.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?