Form 9.B Project Summary






Project Title:

Lightweight Aircraft Diesel Utilizing

Carbon-Carbon Technology

Technical Abstract (Limit 200 words)

DeltaHawk proposes to utilize carbon-carbon

technology in a lightweight 2-cycle diesel engine we

are developing for general aviation use. Our

engine's design represents substantial

improvements over the current fleet's engines:

lighter weight, smaller, fewer parts, lower BSFC,

smoother running, preferred fuel type, liquid

cooling, no electromagnetic interference,

single-lever power operation, and lower cost.

Carbon-carbon pistons and liners would provide our

engine with additional improvements in:

Efficiency -- Carbon-carbon components provide

the potential for increased thermodynamic

efficiency by reducing heat transfer from the

working gas through the liner, piston crown and

cylinder fireplate. Thermodynamic efficiency

translates in operation to improved fuel efficiency.

Pollution reduction -- Higher cylinder surface

temperatures promote more complete combustion

and shorter ignition delay, and therefore less

pollutants. This benefit would augment the

inherently lower pollution levels of the engine's

diesel (excess air) combustion cycle and use of

unleaded Jet-A fuel.

Weight reduction -- The higher strength and lower

density of the carbon-carbon material can reduce

engine weight by allowing lighter pistons and

smaller crankshaft counterweights.

Potential Commercial Applications (Limit 200 words)

Many dynamics are driving the general aviation

marketplace interest in diesel engines: the need to

migrate to a non-leaded fuel; the need to reduce

emissions; fuel availability, reduced flammability

and price advantages of diesel or Jet-A over

100LL; simplicity of operation; track record of

durability; and fuel economy. The DeltaHawk

diesel technical design will provide these benefits,

and has advantages over known diesel prototypes.

DeltaHawk is within six to eight months of

producing (in Experimental status) the first aviation

diesel in our business plan: the standard upright

V-4 200 hp model. Future development, phased

over the next 2 years, includes an offset drive V-4,

standard and offset-drive 400 hp V-8 models and

potentially V-4 100 hp models (all designed for the

general aviation market). The FAA Certification

process will be initiated for each model as soon as

design is stable. The DeltaHawk 200-400 hp models

will be suitable for most aircraft currently using

150-500 hp gasoline piston engines. Sales are

anticipated for new Experimental aircraft,

replacement engines for both Experimental and

Certificated aircraft, and potentially for new

Certificated aircraft.

Name and Address of Principal Investigator (Name,

Organization Name, Mail Address, City/State/Zip)

Douglas A. Doers

DeltaHawk, Inc.

10698 S. 76th Street

Franklin , WI 53132-9541

Name and Address of Offeror (Firm Name, Mail Address,


Diane E. Doers

DeltaHawk, Inc.

10698 S. 76th Street

Franklin , WI 53132-9541