Marketability:
The following web page has information on the
U.S. Sport Pilot / Light Sport Aircraft Category . Helicopters are not included at present, but there is the opening for their inclusion in the future.
" Helicopters - no value, helicopters are too complex to be allowed under this first issue of SP/LSA rules. "
Those who are considering the production of a very light rotorcraft for a broad market may wish to consider these rules in conjunction with those of JAR-VLR and BCAR-VLH.
Weight:
It appears that the maximum weight for SP/LSA rotorcraft has been increased to 1320 lbs (600 kg) gross, from the previously mentioned 1232 lbs (560 kg) gross. This GW is now the same as JAR-VLR.
One modern 2-seat helicopter that is manufactured out of current materials is the Ultrasport 496. Its empty weight is 575 lbs., its useful load is 605 lbs., and its gross weight is 1,180 lbs (536 kg). This proves that new small helicopters can be (and should be) produced with an empty weight to payload ratio that is very close to 50/50.
The current Robinson R-22 Beta II has a payload of 515 lbs and a GW of 1,370 lbs.. The use of modern materials should allow this payload to be maintained or slightly increased, while the GW is reduced to below the JAR-VLR and SP/LSA ceilings of 1320 lbs (600 kg)
Dave